diff --git a/client/src/components/competences/PerformanceCriteriaRow.vue b/client/src/components/competences/PerformanceCriteriaRow.vue
index a0ecd306..7bdc099a 100644
--- a/client/src/components/competences/PerformanceCriteriaRow.vue
+++ b/client/src/components/competences/PerformanceCriteriaRow.vue
@@ -19,10 +19,10 @@ const props = withDefaults(defineProps<Props>(), {
     <div class="flex flex-row items-center">
       <div v-if="showState" class="mr-4 h-8 w-8">
         <it-icon-smiley-happy
-          v-if="criteria.completion_status === 'success'"
+          v-if="criteria.completion_status === 'SUCCESS'"
         ></it-icon-smiley-happy>
         <it-icon-smiley-thinking
-          v-else-if="criteria.completion_status === 'fail'"
+          v-else-if="criteria.completion_status === 'FAIL'"
         ></it-icon-smiley-thinking>
         <it-icon-smiley-neutral v-else></it-icon-smiley-neutral>
       </div>
diff --git a/client/src/components/ui/ItProgress.stories.ts b/client/src/components/ui/ItProgress.stories.ts
index 1a814dfb..6864ba26 100644
--- a/client/src/components/ui/ItProgress.stories.ts
+++ b/client/src/components/ui/ItProgress.stories.ts
@@ -17,9 +17,9 @@ type Story = StoryObj<typeof ItProgress>;
 export const NoProgress: Story = {
   args: {
     statusCount: {
-      fail: 0,
-      success: 0,
-      unknown: 10,
+      FAIL: 0,
+      SUCCESS: 0,
+      UNKNOWN: 10,
     },
   },
 };
@@ -27,9 +27,9 @@ export const NoProgress: Story = {
 export const FiftyPrecentSuccessProgress: Story = {
   args: {
     statusCount: {
-      fail: 0,
-      success: 5,
-      unknown: 5,
+      FAIL: 0,
+      SUCCESS: 5,
+      UNKNOWN: 5,
     },
   },
 };
@@ -37,9 +37,9 @@ export const FiftyPrecentSuccessProgress: Story = {
 export const FiftyPrecentFailProgress: Story = {
   args: {
     statusCount: {
-      fail: 5,
-      success: 0,
-      unknown: 5,
+      FAIL: 5,
+      SUCCESS: 0,
+      UNKNOWN: 5,
     },
   },
 };
diff --git a/client/src/components/ui/ItProgress.vue b/client/src/components/ui/ItProgress.vue
index 37403218..fba9ec6b 100644
--- a/client/src/components/ui/ItProgress.vue
+++ b/client/src/components/ui/ItProgress.vue
@@ -1,7 +1,7 @@
 <script setup lang="ts">
 import { computed } from "vue";
 
-export type StatusCountKey = "fail" | "success" | "unknown";
+export type StatusCountKey = "FAIL" | "SUCCESS" | "UNKNOWN";
 export type StatusCount = Record<StatusCountKey, number>;
 
 const props = defineProps<{
@@ -10,9 +10,9 @@ const props = defineProps<{
 
 const total = computed(() => {
   return (
-    (props.statusCount?.fail || 0) +
-    (props.statusCount?.success || 0) +
-    (props.statusCount?.unknown || 0)
+    (props.statusCount?.FAIL || 0) +
+    (props.statusCount?.SUCCESS || 0) +
+    (props.statusCount?.UNKNOWN || 0)
   );
 });
 
@@ -21,7 +21,7 @@ const done = computed(() => {
     return 0;
   }
 
-  return ((props.statusCount?.success || 0) / total.value) * 100;
+  return ((props.statusCount?.SUCCESS || 0) / total.value) * 100;
 });
 
 const notDone = computed(() => {
@@ -29,7 +29,7 @@ const notDone = computed(() => {
     return 0;
   }
 
-  return ((props.statusCount?.fail || 0) / total.value) * 100 + done.value;
+  return ((props.statusCount?.FAIL || 0) / total.value) * 100 + done.value;
 });
 </script>
 
diff --git a/client/src/constants.ts b/client/src/constants.ts
index 4c7d1916..0b981057 100644
--- a/client/src/constants.ts
+++ b/client/src/constants.ts
@@ -1,5 +1,5 @@
 import type { CourseCompletionStatus } from "@/types";
 
-export const COMPLETION_SUCCESS: CourseCompletionStatus = "success";
-export const COMPLETION_FAILURE: CourseCompletionStatus = "fail";
-export const COMPLETION_UNKNOWN: CourseCompletionStatus = "unknown";
+export const COMPLETION_SUCCESS: CourseCompletionStatus = "SUCCESS";
+export const COMPLETION_FAILURE: CourseCompletionStatus = "FAIL";
+export const COMPLETION_UNKNOWN: CourseCompletionStatus = "UNKNOWN";
diff --git a/client/src/gql/graphql.ts b/client/src/gql/graphql.ts
index 158e17c7..4f4a6d63 100644
--- a/client/src/gql/graphql.ts
+++ b/client/src/gql/graphql.ts
@@ -108,6 +108,30 @@ export type AssignmentObjectType = CoursePageInterface & {
   translation_key?: Maybe<Scalars['String']['output']>;
 };
 
+export type AttendanceCourseUserMutation = {
+  __typename?: 'AttendanceCourseUserMutation';
+  course_session_attendance_course?: Maybe<CourseSessionAttendanceCourseType>;
+};
+
+export type AttendanceUserInputType = {
+  status: AttendanceUserStatus;
+  user_id: Scalars['ID']['input'];
+};
+
+/** An enumeration. */
+export type AttendanceUserStatus =
+  | 'ABSENT'
+  | 'PRESENT';
+
+export type AttendanceUserType = {
+  __typename?: 'AttendanceUserType';
+  email?: Maybe<Scalars['String']['output']>;
+  first_name?: Maybe<Scalars['String']['output']>;
+  last_name?: Maybe<Scalars['String']['output']>;
+  status: AttendanceUserStatus;
+  user_id: Scalars['ID']['output'];
+};
+
 /** An enumeration. */
 export type CoreUserLanguageChoices =
   /** Deutsch */
@@ -127,6 +151,19 @@ export type CoursePageInterface = {
   translation_key?: Maybe<Scalars['String']['output']>;
 };
 
+export type CourseSessionAttendanceCourseType = {
+  __typename?: 'CourseSessionAttendanceCourseType';
+  attendance_user_list?: Maybe<Array<Maybe<AttendanceUserType>>>;
+  course_session_id?: Maybe<Scalars['ID']['output']>;
+  due_date_id?: Maybe<Scalars['ID']['output']>;
+  end?: Maybe<Scalars['DateTime']['output']>;
+  id: Scalars['ID']['output'];
+  learning_content_id?: Maybe<Scalars['ID']['output']>;
+  location: Scalars['String']['output'];
+  start?: Maybe<Scalars['DateTime']['output']>;
+  trainer: Scalars['String']['output'];
+};
+
 export type CourseType = {
   __typename?: 'CourseType';
   category_name: Scalars['String']['output'];
@@ -186,6 +223,7 @@ export type LearningPathType = CoursePageInterface & {
 export type Mutation = {
   __typename?: 'Mutation';
   send_feedback?: Maybe<SendFeedbackPayload>;
+  update_course_session_attendance_course_users?: Maybe<AttendanceCourseUserMutation>;
   upsert_assignment_completion?: Maybe<AssignmentCompletionMutation>;
 };
 
@@ -195,6 +233,12 @@ export type MutationSendFeedbackArgs = {
 };
 
 
+export type MutationUpdateCourseSessionAttendanceCourseUsersArgs = {
+  attendance_user_list: Array<InputMaybe<AttendanceUserInputType>>;
+  id: Scalars['ID']['input'];
+};
+
+
 export type MutationUpsertAssignmentCompletionArgs = {
   assignment_id: Scalars['ID']['input'];
   assignment_user_id?: InputMaybe<Scalars['ID']['input']>;
@@ -216,6 +260,7 @@ export type Query = {
   assignment?: Maybe<AssignmentObjectType>;
   assignment_completion?: Maybe<AssignmentCompletionObjectType>;
   course?: Maybe<CourseType>;
+  course_session_attendance_course?: Maybe<CourseSessionAttendanceCourseType>;
 };
 
 
@@ -236,6 +281,12 @@ export type QueryCourseArgs = {
   id?: InputMaybe<Scalars['Int']['input']>;
 };
 
+
+export type QueryCourseSessionAttendanceCourseArgs = {
+  assignment_user_id?: InputMaybe<Scalars['ID']['input']>;
+  id: Scalars['ID']['input'];
+};
+
 export type SendFeedbackInput = {
   clientMutationId?: InputMaybe<Scalars['String']['input']>;
   course_session: Scalars['Int']['input'];
diff --git a/client/src/gql/schema.graphql b/client/src/gql/schema.graphql
index ab93d32e..dc34a318 100644
--- a/client/src/gql/schema.graphql
+++ b/client/src/gql/schema.graphql
@@ -1,9 +1,43 @@
 type Query {
+  course_session_attendance_course(id: ID!, assignment_user_id: ID): CourseSessionAttendanceCourseType
   course(id: Int): CourseType
   assignment(id: ID, slug: String): AssignmentObjectType
   assignment_completion(assignment_id: ID!, course_session_id: ID!, assignment_user_id: ID): AssignmentCompletionObjectType
 }
 
+type CourseSessionAttendanceCourseType {
+  id: ID!
+  location: String!
+  trainer: String!
+  course_session_id: ID
+  learning_content_id: ID
+  due_date_id: ID
+  end: DateTime
+  start: DateTime
+  attendance_user_list: [AttendanceUserType]
+}
+
+"""
+The `DateTime` scalar type represents a DateTime
+value as specified by
+[iso8601](https://en.wikipedia.org/wiki/ISO_8601).
+"""
+scalar DateTime
+
+type AttendanceUserType {
+  user_id: ID!
+  status: AttendanceUserStatus!
+  first_name: String
+  last_name: String
+  email: String
+}
+
+"""An enumeration."""
+enum AttendanceUserStatus {
+  PRESENT
+  ABSENT
+}
+
 type CourseType {
   id: ID!
   title: String!
@@ -63,13 +97,6 @@ interface CoursePageInterface {
   frontend_url: String
 }
 
-"""
-The `DateTime` scalar type represents a DateTime
-value as specified by
-[iso8601](https://en.wikipedia.org/wiki/ISO_8601).
-"""
-scalar DateTime
-
 type UserType {
   id: ID!
 
@@ -184,6 +211,7 @@ scalar JSONString
 
 type Mutation {
   send_feedback(input: SendFeedbackInput!): SendFeedbackPayload
+  update_course_session_attendance_course_users(attendance_user_list: [AttendanceUserInputType]!, id: ID!): AttendanceCourseUserMutation
   upsert_assignment_completion(assignment_id: ID!, assignment_user_id: ID, completion_data_string: String, completion_status: AssignmentCompletionStatus, course_session_id: ID!, evaluation_grade: Float, evaluation_points: Float): AssignmentCompletionMutation
 }
 
@@ -220,6 +248,15 @@ input SendFeedbackInput {
   clientMutationId: String
 }
 
+type AttendanceCourseUserMutation {
+  course_session_attendance_course: CourseSessionAttendanceCourseType
+}
+
+input AttendanceUserInputType {
+  user_id: ID!
+  status: AttendanceUserStatus!
+}
+
 type AssignmentCompletionMutation {
   assignment_completion: AssignmentCompletionObjectType
 }
diff --git a/client/src/gql/typenames.ts b/client/src/gql/typenames.ts
index 00c8620f..7743de82 100644
--- a/client/src/gql/typenames.ts
+++ b/client/src/gql/typenames.ts
@@ -4,9 +4,14 @@ export const AssignmentCompletionMutation = "AssignmentCompletionMutation";
 export const AssignmentCompletionObjectType = "AssignmentCompletionObjectType";
 export const AssignmentCompletionStatus = "AssignmentCompletionStatus";
 export const AssignmentObjectType = "AssignmentObjectType";
+export const AttendanceCourseUserMutation = "AttendanceCourseUserMutation";
+export const AttendanceUserInputType = "AttendanceUserInputType";
+export const AttendanceUserStatus = "AttendanceUserStatus";
+export const AttendanceUserType = "AttendanceUserType";
 export const Boolean = "Boolean";
 export const CoreUserLanguageChoices = "CoreUserLanguageChoices";
 export const CoursePageInterface = "CoursePageInterface";
+export const CourseSessionAttendanceCourseType = "CourseSessionAttendanceCourseType";
 export const CourseType = "CourseType";
 export const DateTime = "DateTime";
 export const ErrorType = "ErrorType";
diff --git a/client/src/pages/cockpit/assignmentsPage/AssignmentDetails.vue b/client/src/pages/cockpit/assignmentsPage/AssignmentDetails.vue
index 515ad009..b36b0fdb 100644
--- a/client/src/pages/cockpit/assignmentsPage/AssignmentDetails.vue
+++ b/client/src/pages/cockpit/assignmentsPage/AssignmentDetails.vue
@@ -129,7 +129,7 @@ const assignmentDetail = computed(() =>
           </template>
           <template #link>
             <router-link
-              v-if="submissionStatusForUser(csu.user_id)?.progressStatus === 'success'"
+              v-if="submissionStatusForUser(csu.user_id)?.progressStatus === 'SUCCESS'"
               :to="`/course/${props.courseSession.course.slug}/cockpit/assignment/${assignment.assignmentId}/${csu.user_id}`"
               class="w-full text-right underline"
               data-cy="show-results"
diff --git a/client/src/pages/cockpit/assignmentsPage/AssignmentSubmissionProgress.vue b/client/src/pages/cockpit/assignmentsPage/AssignmentSubmissionProgress.vue
index 3a3aa87a..cb277c71 100644
--- a/client/src/pages/cockpit/assignmentsPage/AssignmentSubmissionProgress.vue
+++ b/client/src/pages/cockpit/assignmentsPage/AssignmentSubmissionProgress.vue
@@ -45,10 +45,10 @@ onMounted(async () => {
     </div>
     <div><ItProgress :status-count="state.progressStatusCount" /></div>
     <div class="text-gray-900" :class="{ 'text-gray-900': showTitle }">
-      {{ state.progressStatusCount.success || 0 }} von
+      {{ state.progressStatusCount.SUCCESS || 0 }} von
       {{
-        (state.progressStatusCount.success || 0) +
-        (state.progressStatusCount.unknown || 0)
+        (state.progressStatusCount.SUCCESS || 0) +
+        (state.progressStatusCount.UNKNOWN || 0)
       }}
       Lernenden haben ihre Ergebnisse eingereicht.
     </div>
diff --git a/client/src/pages/cockpit/cockpitPage/CockpitPage.vue b/client/src/pages/cockpit/cockpitPage/CockpitPage.vue
index cd45cbf1..d1630f85 100644
--- a/client/src/pages/cockpit/cockpitPage/CockpitPage.vue
+++ b/client/src/pages/cockpit/cockpitPage/CockpitPage.vue
@@ -174,7 +174,7 @@ function setActiveClasses(translationKey: string) {
                             class="mr-2 inline-block h-8 w-8"
                           ></it-icon-smiley-thinking>
                           <p class="text-bold inline-block">
-                            {{ userCountStatusForCircle(csu.user_id, circle).fail }}
+                            {{ userCountStatusForCircle(csu.user_id, circle).FAIL }}
                           </p>
                         </div>
                         <li class="mr-6 flex flex-row items-center">
@@ -182,7 +182,7 @@ function setActiveClasses(translationKey: string) {
                             class="mr-2 inline-block h-8 w-8"
                           ></it-icon-smiley-happy>
                           <p class="text-bold inline-block">
-                            {{ userCountStatusForCircle(csu.user_id, circle).success }}
+                            {{ userCountStatusForCircle(csu.user_id, circle).SUCCESS }}
                           </p>
                         </li>
                         <li class="flex flex-row items-center">
@@ -190,7 +190,7 @@ function setActiveClasses(translationKey: string) {
                             class="mr-2 inline-block h-8 w-8"
                           ></it-icon-smiley-neutral>
                           <p class="text-bold inline-block">
-                            {{ userCountStatusForCircle(csu.user_id, circle).unknown }}
+                            {{ userCountStatusForCircle(csu.user_id, circle).UNKNOWN }}
                           </p>
                         </li>
                       </div>
diff --git a/client/src/pages/competence/CompetenceIndexPage.vue b/client/src/pages/competence/CompetenceIndexPage.vue
index 235f1372..3ac8e99c 100644
--- a/client/src/pages/competence/CompetenceIndexPage.vue
+++ b/client/src/pages/competence/CompetenceIndexPage.vue
@@ -22,7 +22,7 @@ const failedCriteria = computed(() => {
   return competenceStore
     .flatPerformanceCriteria()
     .filter((criteria) => {
-      return criteria.completion_status === "fail";
+      return criteria.completion_status === "FAIL";
     })
     .slice(0, 3);
 });
@@ -111,7 +111,7 @@ const countStatus = computed(() => {
           <h5 class="mb-4 text-gray-700">«{{ $t("selfEvaluation.no") }}»</h5>
           <div class="flex flex-row items-center">
             <it-icon-smiley-thinking class="h-16 w-16"></it-icon-smiley-thinking>
-            <p class="ml-4 inline-block text-7xl font-bold">{{ countStatus.fail }}</p>
+            <p class="ml-4 inline-block text-7xl font-bold">{{ countStatus.FAIL }}</p>
           </div>
         </li>
         <li
@@ -121,7 +121,7 @@ const countStatus = computed(() => {
           <div class="flex flex-row items-center">
             <it-icon-smiley-happy class="h-16 w-16"></it-icon-smiley-happy>
             <p class="ml-4 inline-block text-7xl font-bold">
-              {{ countStatus.success }}
+              {{ countStatus.SUCCESS }}
             </p>
           </div>
         </li>
@@ -130,7 +130,7 @@ const countStatus = computed(() => {
           <div class="flex flex-row items-center">
             <it-icon-smiley-neutral class="h-16 w-16"></it-icon-smiley-neutral>
             <p class="ml-4 inline-block text-7xl font-bold">
-              {{ countStatus.unknown }}
+              {{ countStatus.UNKNOWN }}
             </p>
           </div>
         </li>
diff --git a/client/src/pages/competence/PerformanceCriteriaPage.vue b/client/src/pages/competence/PerformanceCriteriaPage.vue
index d4bb10ed..dfd96b54 100644
--- a/client/src/pages/competence/PerformanceCriteriaPage.vue
+++ b/client/src/pages/competence/PerformanceCriteriaPage.vue
@@ -32,17 +32,17 @@ const { t } = useTranslation();
 
 const mobileMenuItems: MenuItem[] = [
   {
-    id: "fail",
+    id: "FAIL",
     name: `«${t("selfEvaluation.no")}»`,
     iconName: "it-icon-smiley-thinking",
   },
   {
-    id: "success",
+    id: "SUCCESS",
     name: `«${t("selfEvaluation.yes")}»`,
     iconName: "it-icon-smiley-happy",
   },
   {
-    id: "unknown",
+    id: "UNKNOWN",
     name: t("competences.notAssessed"),
     iconName: "it-icon-smiley-neutral",
   },
@@ -91,7 +91,7 @@ function updateActiveState(status: CourseCompletionStatus) {
           :key="item.id"
           :class="{
             'bg-gray-200': activeMenuItem.id === item.id,
-            'mr-6': item.id !== 'unknown',
+            'mr-6': item.id !== 'UNKNOWN',
           }"
           class="mr-6 inline-block px-2 py-4"
           @click="updateActiveState(item.id)"
diff --git a/client/src/pages/competence/SinglePerformanceCriteriaPage.vue b/client/src/pages/competence/SinglePerformanceCriteriaPage.vue
index c9068206..4e3a9f5d 100644
--- a/client/src/pages/competence/SinglePerformanceCriteriaPage.vue
+++ b/client/src/pages/competence/SinglePerformanceCriteriaPage.vue
@@ -39,11 +39,11 @@ const singleCriteria = computed(() => {
             <button
               class="inline-flex flex-1 items-center border p-4 text-left"
               :class="{
-                'border-green-500': singleCriteria.completion_status === 'success',
-                'border-2': singleCriteria.completion_status === 'success',
+                'border-green-500': singleCriteria.completion_status === 'SUCCESS',
+                'border-2': singleCriteria.completion_status === 'SUCCESS',
               }"
               data-cy="success"
-              @click="circleStore.markCompletion(singleCriteria, 'success')"
+              @click="circleStore.markCompletion(singleCriteria, 'SUCCESS')"
             >
               <it-icon-smiley-happy class="mr-4 h-16 w-16"></it-icon-smiley-happy>
               <span class="text-large font-bold">{{ $t("selfEvaluation.yes") }}</span>
@@ -51,11 +51,11 @@ const singleCriteria = computed(() => {
             <button
               class="inline-flex flex-1 items-center border p-4 text-left"
               :class="{
-                'border-orange-500': singleCriteria.completion_status === 'fail',
-                'border-2': singleCriteria.completion_status === 'fail',
+                'border-orange-500': singleCriteria.completion_status === 'FAIL',
+                'border-2': singleCriteria.completion_status === 'FAIL',
               }"
               data-cy="fail"
-              @click="circleStore.markCompletion(singleCriteria, 'fail')"
+              @click="circleStore.markCompletion(singleCriteria, 'FAIL')"
             >
               <it-icon-smiley-thinking class="mr-4 h-16 w-16"></it-icon-smiley-thinking>
               <span class="text-xl font-bold">{{ $t("selfEvaluation.no") }}</span>
diff --git a/client/src/pages/learningPath/circlePage/LearningSequence.vue b/client/src/pages/learningPath/circlePage/LearningSequence.vue
index 6fd0d5ba..0eaaba36 100644
--- a/client/src/pages/learningPath/circlePage/LearningSequence.vue
+++ b/client/src/pages/learningPath/circlePage/LearningSequence.vue
@@ -24,9 +24,9 @@ const props = withDefaults(defineProps<Props>(), {
 const circleStore = useCircleStore();
 
 function toggleCompleted(learningContent: LearningContentInterface) {
-  let completionStatus: CourseCompletionStatus = "success";
-  if (learningContent.completion_status === "success") {
-    completionStatus = "fail";
+  let completionStatus: CourseCompletionStatus = "SUCCESS";
+  if (learningContent.completion_status === "SUCCESS") {
+    completionStatus = "FAIL";
   }
   circleStore.markCompletion(learningContent, completionStatus);
 }
@@ -56,7 +56,7 @@ const continueTranslationKeyTuple = computed(() => {
     const lastFinished = findLast(
       circleStore.circle.flatLearningContents,
       (learningContent) => {
-        return learningContent.completion_status === "success";
+        return learningContent.completion_status === "SUCCESS";
       }
     );
 
@@ -127,7 +127,7 @@ const learningSequenceBorderClass = computed(() => {
           >
             <div v-if="props.readonly">
               <it-icon-check
-                v-if="learningContent.completion_status === 'success'"
+                v-if="learningContent.completion_status === 'SUCCESS'"
                 class="block h-8 w-8"
               ></it-icon-check>
               <div v-else class="h-8 w-8"></div>
@@ -136,8 +136,9 @@ const learningSequenceBorderClass = computed(() => {
               v-else
               :checkbox-item="{
                 value: learningContent.completion_status,
-                checked: learningContent.completion_status === 'success',
+                checked: learningContent.completion_status === 'SUCCESS',
               }"
+              :disabled="!learningContent.can_user_self_toggle_course_completion"
               :data-cy="`${learningContent.slug}-checkbox`"
               @toggle="toggleCompleted(learningContent)"
             />
@@ -194,14 +195,14 @@ const learningSequenceBorderClass = computed(() => {
           @click="!props.readonly && circleStore.openSelfEvaluation(learningUnit)"
         >
           <div
-            v-if="circleStore.calcSelfEvaluationStatus(learningUnit) === 'success'"
+            v-if="circleStore.calcSelfEvaluationStatus(learningUnit) === 'SUCCESS'"
             class="self-evaluation-success flex items-center gap-4 pb-3 lg:pb-6"
           >
             <it-icon-smiley-happy class="h-8 w-8 flex-none" data-cy="success" />
             <div>{{ $t("selfEvaluation.selfEvaluationYes") }}</div>
           </div>
           <div
-            v-else-if="circleStore.calcSelfEvaluationStatus(learningUnit) === 'fail'"
+            v-else-if="circleStore.calcSelfEvaluationStatus(learningUnit) === 'FAIL'"
             class="self-evaluation-fail flex items-center gap-4 pb-3 lg:pb-6"
           >
             <it-icon-smiley-thinking class="h-8 w-8 flex-none" data-cy="fail" />
diff --git a/client/src/pages/learningPath/learningContentPage/assignment/AssignmentSubmissionView.vue b/client/src/pages/learningPath/learningContentPage/assignment/AssignmentSubmissionView.vue
index 8fc5178d..c4b8ae03 100644
--- a/client/src/pages/learningPath/learningContentPage/assignment/AssignmentSubmissionView.vue
+++ b/client/src/pages/learningPath/learningContentPage/assignment/AssignmentSubmissionView.vue
@@ -4,9 +4,11 @@ import ItButton from "@/components/ui/ItButton.vue";
 import ItCheckbox from "@/components/ui/ItCheckbox.vue";
 import ItSuccessAlert from "@/components/ui/ItSuccessAlert.vue";
 import { useCurrentCourseSession } from "@/composables";
+import { bustItGetCache } from "@/fetchHelpers";
 import { UPSERT_ASSIGNMENT_COMPLETION_MUTATION } from "@/graphql/mutations";
 import AssignmentSubmissionResponses from "@/pages/learningPath/learningContentPage/assignment/AssignmentSubmissionResponses.vue";
 import { useCourseSessionsStore } from "@/stores/courseSessions";
+import { useUserStore } from "@/stores/user";
 import type { Assignment, AssignmentCompletion, AssignmentTask } from "@/types";
 import { useMutation } from "@urql/vue";
 import type { Dayjs } from "dayjs";
@@ -61,7 +63,7 @@ const onEditTask = (task: AssignmentTask) => {
 const onSubmit = async () => {
   try {
     // noinspection TypeScriptValidateTypes
-    upsertAssignmentCompletionMutation.executeMutation({
+    await upsertAssignmentCompletionMutation.executeMutation({
       assignmentId: props.assignment.id.toString(),
       courseSessionId: courseSession.value.id.toString(),
       completionDataString: JSON.stringify({}),
@@ -70,6 +72,9 @@ const onSubmit = async () => {
       // @ts-ignore
       id: props.assignmentCompletion?.id,
     });
+    bustItGetCache(
+      `/api/course/completion/${courseSession.value.id}/${useUserStore().id}/`
+    );
   } catch (error) {
     log.error("Could not submit assignment", error);
   }
diff --git a/client/src/pages/learningPath/selfEvaluationPage/SelfEvaluation.vue b/client/src/pages/learningPath/selfEvaluationPage/SelfEvaluation.vue
index 100689db..d2c1c350 100644
--- a/client/src/pages/learningPath/selfEvaluationPage/SelfEvaluation.vue
+++ b/client/src/pages/learningPath/selfEvaluationPage/SelfEvaluation.vue
@@ -93,8 +93,8 @@ onUnmounted(() => {
               <button
                 class="inline-flex flex-1 items-center border p-4 text-left"
                 :class="{
-                  'border-green-500': currentQuestion.completion_status === 'success',
-                  'border-2': currentQuestion.completion_status === 'success',
+                  'border-green-500': currentQuestion.completion_status === 'SUCCESS',
+                  'border-2': currentQuestion.completion_status === 'SUCCESS',
                 }"
                 data-cy="success"
                 @click="circleStore.markCompletion(currentQuestion, COMPLETION_SUCCESS)"
@@ -112,7 +112,7 @@ onUnmounted(() => {
                   'border-2': currentQuestion.completion_status === COMPLETION_FAILURE,
                 }"
                 data-cy="fail"
-                @click="circleStore.markCompletion(currentQuestion, 'fail')"
+                @click="circleStore.markCompletion(currentQuestion, 'FAIL')"
               >
                 <it-icon-smiley-thinking
                   class="mr-4 h-16 w-16"
diff --git a/client/src/services/assignmentService.ts b/client/src/services/assignmentService.ts
index 3db79596..c8ffe276 100644
--- a/client/src/services/assignmentService.ts
+++ b/client/src/services/assignmentService.ts
@@ -70,13 +70,13 @@ export function calcUserAssignmentCompletionStatus(
     if (userAssignmentStatus) {
       userStatus = userAssignmentStatus.completion_status;
     }
-    let progressStatus: StatusCountKey = "unknown";
+    let progressStatus: StatusCountKey = "UNKNOWN";
     if (
       ["SUBMITTED", "EVALUATION_IN_PROGRESS", "EVALUATION_SUBMITTED"].includes(
         userStatus
       )
     ) {
-      progressStatus = "success";
+      progressStatus = "SUCCESS";
     }
 
     return {
diff --git a/client/src/services/circle.ts b/client/src/services/circle.ts
index 1455c12e..bd82b4ca 100644
--- a/client/src/services/circle.ts
+++ b/client/src/services/circle.ts
@@ -203,7 +203,7 @@ export class Circle implements WagtailCircle {
       return (
         this.flatChildren.filter((lc) => {
           return (
-            lc.completion_status === "success" &&
+            lc.completion_status === "SUCCESS" &&
             lc.parentLearningSequence?.translation_key === translationKey
           );
         }).length > 0
@@ -229,12 +229,12 @@ export class Circle implements WagtailCircle {
       );
 
       return (
-        learningContents.every((lc) => lc.completion_status === "success") &&
+        learningContents.every((lc) => lc.completion_status === "SUCCESS") &&
         (groupedPerformanceCriteria.length === 0 ||
           groupedPerformanceCriteria.every((group) =>
             group.every(
               (pc) =>
-                pc.completion_status === "success" || pc.completion_status === "fail"
+                pc.completion_status === "SUCCESS" || pc.completion_status === "FAIL"
             )
           ))
       );
@@ -252,12 +252,12 @@ export class Circle implements WagtailCircle {
   public parseCompletionData(completionData: CourseCompletion[]) {
     this.flatChildren.forEach((page) => {
       const pageIndex = completionData.findIndex((e) => {
-        return e.page_key === page.translation_key;
+        return e.page_id === page.id;
       });
       if (pageIndex >= 0) {
         page.completion_status = completionData[pageIndex].completion_status;
       } else {
-        page.completion_status = "unknown";
+        page.completion_status = "UNKNOWN";
       }
     });
 
diff --git a/client/src/services/learningPath.ts b/client/src/services/learningPath.ts
index 05104da7..78e7feed 100644
--- a/client/src/services/learningPath.ts
+++ b/client/src/services/learningPath.ts
@@ -25,8 +25,8 @@ function getLastCompleted(courseSlug: string, completionData: CourseCompletion[]
   const courseSession = courseSessionsStore.courseSessionForCourse(courseSlug);
   return orderBy(completionData, ["updated_at"], "desc").find((c: CourseCompletion) => {
     return (
-      c.completion_status === "success" &&
-      c.course_session === courseSession?.id &&
+      c.completion_status === "SUCCESS" &&
+      c.course_session_id === courseSession?.id &&
       c.page_type.startsWith("learnpath.LearningContent")
     );
   });
@@ -129,13 +129,13 @@ export class LearningPath implements WagtailLearningPath {
       const lastCircle = this.circles.find((circle) => {
         return circle.flatLearningContents.find(
           (learningContent) =>
-            learningContent.translation_key === lastCompletedLearningContent.page_key
+            learningContent.id === lastCompletedLearningContent.page_id
         );
       });
       if (lastCircle) {
         const lastLearningContent = lastCircle.flatLearningContents.find(
           (learningContent) =>
-            learningContent.translation_key === lastCompletedLearningContent.page_key
+            learningContent.id === lastCompletedLearningContent.page_id
         );
         if (lastLearningContent && lastLearningContent.nextLearningContent) {
           this.nextLearningContent = lastLearningContent.nextLearningContent;
diff --git a/client/src/stores/circle.ts b/client/src/stores/circle.ts
index 7b89ae59..69eeedd7 100644
--- a/client/src/stores/circle.ts
+++ b/client/src/stores/circle.ts
@@ -105,7 +105,7 @@ export const useCircleStore = defineStore({
         | LearningUnitPerformanceCriteria
         | PerformanceCriteria
         | undefined,
-      completion_status: CourseCompletionStatus = "success"
+      completion_status: CourseCompletionStatus = "SUCCESS"
     ) {
       const completionStore = useCompletionStore();
 
@@ -146,22 +146,27 @@ export const useCircleStore = defineStore({
     },
     calcSelfEvaluationStatus(learningUnit: LearningUnit): CourseCompletionStatus {
       if (learningUnit.children.length > 0) {
-        if (learningUnit.children.every((q) => q.completion_status === "success")) {
-          return "success";
+        if (learningUnit.children.every((q) => q.completion_status === "SUCCESS")) {
+          return "SUCCESS";
         }
         if (
           learningUnit.children.every(
-            (q) => q.completion_status === "fail" || q.completion_status === "success"
+            (q) => q.completion_status === "FAIL" || q.completion_status === "SUCCESS"
           )
         ) {
-          return "fail";
+          return "FAIL";
         }
       }
-      return "unknown";
+      return "UNKNOWN";
     },
     continueFromLearningContent(currentLearningContent: LearningContentInterface) {
       if (currentLearningContent) {
-        this.markCompletion(currentLearningContent, "success");
+        if (currentLearningContent.can_user_self_toggle_course_completion) {
+          this.markCompletion(currentLearningContent, "SUCCESS");
+        } else {
+          // reload completion data anyway
+          currentLearningContent.parentCircle?.parentLearningPath?.reloadCompletionData();
+        }
         this.closeLearningContent(currentLearningContent);
       } else {
         log.error("currentLearningContent is undefined");
diff --git a/client/src/stores/competence.ts b/client/src/stores/competence.ts
index 6a80960e..5865a9d3 100644
--- a/client/src/stores/competence.ts
+++ b/client/src/stores/competence.ts
@@ -35,16 +35,16 @@ export const useCompetenceStore = defineStore({
       if (criteria) {
         const grouped = groupBy(criteria, "completion_status");
         return {
-          fail: grouped?.fail?.length || 0,
-          success: grouped?.success?.length || 0,
-          unknown: grouped?.unknown?.length || 0,
+          UNKNOWN: grouped?.UNKNOWN?.length || 0,
+          SUCCESS: grouped?.SUCCESS?.length || 0,
+          FAIL: grouped?.FAIL?.length || 0,
         };
       }
 
       return {
-        success: 0,
-        fail: 0,
-        unknown: 0,
+        UNKNOWN: 0,
+        SUCCESS: 0,
+        FAIL: 0,
       };
     },
     criteriaByCompetence(competence: CompetencePage) {
@@ -177,14 +177,14 @@ export const useCompetenceStore = defineStore({
             competenceProfilePage.children.forEach((competence) => {
               competence.children.forEach((performanceCriteria) => {
                 const completion = completionData.find(
-                  (c) => c.page_key === performanceCriteria.translation_key
+                  (c) => c.page_id === performanceCriteria.id
                 );
                 if (completion) {
                   performanceCriteria.completion_status = completion.completion_status;
                   performanceCriteria.completion_status_updated_at =
                     completion.updated_at;
                 } else {
-                  performanceCriteria.completion_status = "unknown";
+                  performanceCriteria.completion_status = "UNKNOWN";
                   performanceCriteria.completion_status_updated_at = "";
                 }
               });
diff --git a/client/src/stores/completion.ts b/client/src/stores/completion.ts
index ed394905..4bc82f75 100644
--- a/client/src/stores/completion.ts
+++ b/client/src/stores/completion.ts
@@ -43,7 +43,7 @@ export const useCompletionStore = defineStore({
 
       if (courseSessionId) {
         const completionData = await itPost("/api/course/completion/mark/", {
-          page_key: page.translation_key,
+          page_id: page.id,
           completion_status: page.completion_status,
           course_session_id: courseSessionId,
         });
diff --git a/client/src/types.ts b/client/src/types.ts
index 7b523401..e354fedf 100644
--- a/client/src/types.ts
+++ b/client/src/types.ts
@@ -5,7 +5,7 @@ import type { Component } from "vue";
 
 export type LoginMethod = "local" | "sso";
 
-export type CourseCompletionStatus = "unknown" | "fail" | "success";
+export type CourseCompletionStatus = "UNKNOWN" | "FAIL" | "SUCCESS";
 
 export interface BaseCourseWagtailPage {
   readonly id: number;
@@ -43,6 +43,7 @@ export interface LearningContentInterface extends BaseCourseWagtailPage {
   readonly minutes: number;
   readonly description: string;
   readonly content_url: string;
+  readonly can_user_self_toggle_course_completion: boolean;
   parentCircle: Circle;
   parentLearningSequence?: LearningSequence;
   parentLearningUnit?: LearningUnit;
@@ -169,14 +170,13 @@ export interface Topic extends BaseCourseWagtailPage {
 export type LearningPathChild = Topic | WagtailCircle;
 
 export interface CourseCompletion {
-  id: number;
+  readonly id: number;
   created_at: string;
   updated_at: string;
-  user: number;
-  page_key: string;
-  page_type: string;
-  page_slug: string;
-  course_session: number;
+  readonly user: number;
+  readonly page_id: number;
+  readonly page_type: string;
+  readonly course_session_id: number;
   completion_status: CourseCompletionStatus;
   additional_json_data: unknown;
 }
diff --git a/server/vbv_lernwelt/assignment/services.py b/server/vbv_lernwelt/assignment/services.py
index ae872d74..c2708786 100644
--- a/server/vbv_lernwelt/assignment/services.py
+++ b/server/vbv_lernwelt/assignment/services.py
@@ -12,7 +12,8 @@ from vbv_lernwelt.assignment.models import (
 )
 from vbv_lernwelt.core.models import User
 from vbv_lernwelt.core.utils import find_first
-from vbv_lernwelt.course.models import CourseSession
+from vbv_lernwelt.course.models import CourseCompletionStatus, CourseSession
+from vbv_lernwelt.course.services import mark_course_completion
 
 
 def update_assignment_completion(
@@ -172,6 +173,16 @@ def update_assignment_completion(
                 acl.completion_data[key].update(task_data)
         acl.save()
 
+        if completion_status == AssignmentCompletionStatus.SUBMITTED:
+            learning_content = assignment.learningcontentassignment_set.first()
+            if learning_content:
+                mark_course_completion(
+                    user=assignment_user,
+                    page=learning_content,
+                    course_session=course_session,
+                    completion_status=CourseCompletionStatus.SUCCESS.value,
+                )
+
     return ac
 
 
diff --git a/server/vbv_lernwelt/competence/migrations/0003_auto_20230626_1747.py b/server/vbv_lernwelt/competence/migrations/0003_auto_20230626_1747.py
new file mode 100644
index 00000000..d359769b
--- /dev/null
+++ b/server/vbv_lernwelt/competence/migrations/0003_auto_20230626_1747.py
@@ -0,0 +1,22 @@
+# Generated by Django 3.2.13 on 2023-06-26 15:47
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("competence", "0002_performancecriteria_learning_unit"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="performancecriteria",
+            name="can_user_self_toggle_course_completion",
+            field=models.BooleanField(default=True),
+        ),
+        migrations.AddField(
+            model_name="performancecriteria",
+            name="has_course_completion_status",
+            field=models.BooleanField(default=True),
+        ),
+    ]
diff --git a/server/vbv_lernwelt/competence/models.py b/server/vbv_lernwelt/competence/models.py
index 2f64a188..14da06ce 100644
--- a/server/vbv_lernwelt/competence/models.py
+++ b/server/vbv_lernwelt/competence/models.py
@@ -75,6 +75,8 @@ class PerformanceCriteria(CourseBasePage):
         blank=True,
         on_delete=models.SET_NULL,
     )
+    has_course_completion_status = models.BooleanField(default=True)
+    can_user_self_toggle_course_completion = models.BooleanField(default=True)
 
     content_panels = [
         FieldPanel("title"),
diff --git a/server/vbv_lernwelt/core/schema.py b/server/vbv_lernwelt/core/schema.py
index 69355e81..ed89136d 100644
--- a/server/vbv_lernwelt/core/schema.py
+++ b/server/vbv_lernwelt/core/schema.py
@@ -3,14 +3,18 @@ import graphene
 from vbv_lernwelt.assignment.graphql.mutations import AssignmentMutation
 from vbv_lernwelt.assignment.graphql.queries import AssignmentQuery
 from vbv_lernwelt.course.schema import CourseQuery
+from vbv_lernwelt.course_session.graphql.mutations import CourseSessionMutation
+from vbv_lernwelt.course_session.graphql.queries import CourseSessionQuery
 from vbv_lernwelt.feedback.graphql.mutations import FeedbackMutation
 
 
-class Query(AssignmentQuery, CourseQuery, graphene.ObjectType):
+class Query(AssignmentQuery, CourseQuery, CourseSessionQuery, graphene.ObjectType):
     pass
 
 
-class Mutation(AssignmentMutation, FeedbackMutation, graphene.ObjectType):
+class Mutation(
+    AssignmentMutation, CourseSessionMutation, FeedbackMutation, graphene.ObjectType
+):
     pass
 
 
diff --git a/server/vbv_lernwelt/course/creators/test_course.py b/server/vbv_lernwelt/course/creators/test_course.py
index 1e3df840..12a987f0 100644
--- a/server/vbv_lernwelt/course/creators/test_course.py
+++ b/server/vbv_lernwelt/course/creators/test_course.py
@@ -1,8 +1,8 @@
 import json
-import random
-from datetime import datetime, timedelta
+from datetime import datetime
 
 import wagtail_factories
+from dateutil.relativedelta import relativedelta, TH, TU
 from django.conf import settings
 from django.utils import timezone
 from slugify import slugify
@@ -98,6 +98,45 @@ def create_test_course(include_uk=True, include_vv=True, with_sessions=False):
             id=TEST_COURSE_SESSION_BERN_ID,
             start_date=now,
         )
+        csac = CourseSessionAttendanceCourse.objects.create(
+            course_session=cs_bern,
+            learning_content=LearningContentAttendanceCourse.objects.get(
+                slug="test-lehrgang-lp-circle-fahrzeug-lc-präsenzkurs-fahrzeug"
+            ),
+            location="Handelsschule KV Bern, Zimmer 123, Eigerstrasse 16, 3012 Bern",
+            trainer="Roland Grossenbacher, roland.grossenbacher@helvetia.ch",
+        )
+        tuesday_in_two_weeks = (
+            datetime.now() + relativedelta(weekday=TU(2)) + relativedelta(weeks=2)
+        )
+        csac.due_date.start = timezone.make_aware(
+            tuesday_in_two_weeks.replace(hour=8, minute=30, second=0, microsecond=0)
+        )
+        csac.due_date.end = timezone.make_aware(
+            tuesday_in_two_weeks.replace(hour=17, minute=0, second=0, microsecond=0)
+        )
+        csac.due_date.save()
+
+        csa = CourseSessionAssignment.objects.create(
+            course_session=cs_bern,
+            learning_content=LearningContentAssignment.objects.get(
+                slug=f"{course.slug}-lp-circle-fahrzeug-lc-überprüfen-einer-motorfahrzeug-versicherungspolice"
+            ),
+        )
+        next_thursday = datetime.now() + relativedelta(weekday=TH(2))
+        csa.submission_deadline.start = timezone.make_aware(
+            (next_thursday + relativedelta(weeks=3)).replace(
+                hour=23, minute=59, second=59, microsecond=0
+            )
+        )
+        csa.submission_deadline.save()
+        csa.evaluation_deadline.start = timezone.make_aware(
+            (next_thursday + relativedelta(weeks=5)).replace(
+                hour=23, minute=59, second=59, microsecond=0
+            )
+        )
+        csa.evaluation_deadline.save()
+
         cs_zurich = CourseSession.objects.create(
             course_id=COURSE_TEST_ID,
             title="Test Zürich 2022 a",
@@ -129,18 +168,6 @@ def create_test_course(include_uk=True, include_vv=True, with_sessions=False):
             course_session=cs_zurich,
             user=student2,
         )
-        course = Course.objects.get(id=COURSE_TEST_ID)
-        for cs in CourseSession.objects.filter(course_id=COURSE_TEST_ID):
-            for assignment in LearningContentAssignment.objects.descendant_of(
-                course.coursepage
-            ):
-                create_course_session_assignment(cs, assignment)
-            for (
-                attendance_course
-            ) in LearningContentAttendanceCourse.objects.descendant_of(
-                course.coursepage
-            ):
-                create_course_session_attendance_course(cs, attendance_course)
 
     return course
 
@@ -169,45 +196,6 @@ def create_test_assignment_submitted_data(assignment, course_session, user):
         )
 
 
-def create_course_session_assignment(course_session, assignment):
-    csa, created = CourseSessionAssignment.objects.get_or_create(
-        course_session=course_session,
-        learning_content=assignment,
-    )
-
-    if course_session.start_date is None:
-        course_session.start_date = datetime.now() + timedelta(days=12)
-        course_session.save()
-    submission_deadline = csa.submission_deadline
-    if submission_deadline:
-        submission_deadline.start = course_session.start_date + timedelta(days=14)
-        submission_deadline.save()
-    evaluation_deadline = csa.evaluation_deadline
-    if evaluation_deadline:
-        evaluation_deadline.start = course_session.start_date + timedelta(days=28)
-        evaluation_deadline.save()
-    return csa
-
-
-def create_course_session_attendance_course(course_session, course):
-    casc = CourseSessionAttendanceCourse.objects.create(
-        course_session=course_session,
-        learning_content=course,
-        location="Handelsschule KV Bern, Zimmer 123, Eigerstrasse 16, 3012 Bern",
-        trainer="Roland Grossenbacher, roland.grossenbacher@helvetia.ch",
-    )
-    random_week = random.randint(1, 26)
-
-    casc.due_date.start = timezone.make_aware(
-        datetime(2023, 6, 14, 8, 30) + timedelta(weeks=random_week)
-    )
-    casc.due_date.end = timezone.make_aware(
-        datetime(2023, 6, 14, 17, 0) + timedelta(weeks=random_week)
-    )
-    casc.due_date.save()
-    return casc
-
-
 def create_test_course_with_categories(apps=None, schema_editor=None):
     if apps is not None:
         Course = apps.get_model("course", "Course")
diff --git a/server/vbv_lernwelt/course/management/commands/create_default_courses.py b/server/vbv_lernwelt/course/management/commands/create_default_courses.py
index 3023653e..f29fc41f 100644
--- a/server/vbv_lernwelt/course/management/commands/create_default_courses.py
+++ b/server/vbv_lernwelt/course/management/commands/create_default_courses.py
@@ -3,6 +3,7 @@ import random
 from datetime import datetime, timedelta
 
 import djclick as click
+from dateutil.relativedelta import relativedelta, TH, TU
 from django.utils import timezone
 
 from vbv_lernwelt.assignment.creators.create_assignments import (
@@ -245,13 +246,6 @@ def create_course_uk_de():
         title="Bern 2023 a",
     )
 
-    for i, cs in enumerate(CourseSession.objects.filter(course_id=COURSE_UK_TRAINING)):
-        create_course_session_assignments(
-            cs,
-            f"{course.slug}-lp-circle-fahrzeug-lc-überprüfen-einer-motorfahrzeug-versicherungspolice",
-            i=i,
-        )
-
     csac = CourseSessionAttendanceCourse.objects.create(
         course_session=cs,
         learning_content=LearningContentAttendanceCourse.objects.get(
@@ -260,17 +254,37 @@ def create_course_uk_de():
         location="Handelsschule KV Bern, Zimmer 123, Eigerstrasse 16, 3012 Bern",
         trainer="Roland Grossenbacher, roland.grossenbacher@helvetia.ch",
     )
-
-    # TODO: create dates schlauer
-    random_week = random.randint(1, 26)
+    tuesday_in_two_weeks = (
+        datetime.now() + relativedelta(weekday=TU(2)) + relativedelta(weeks=2)
+    )
     csac.due_date.start = timezone.make_aware(
-        datetime(2023, 6, 14, 8, 30) + timedelta(weeks=random_week)
+        tuesday_in_two_weeks.replace(hour=8, minute=30, second=0, microsecond=0)
     )
     csac.due_date.end = timezone.make_aware(
-        datetime(2023, 6, 14, 17, 0) + timedelta(weeks=random_week)
+        tuesday_in_two_weeks.replace(hour=17, minute=0, second=0, microsecond=0)
     )
     csac.due_date.save()
 
+    csa = CourseSessionAssignment.objects.create(
+        course_session=cs,
+        learning_content=LearningContentAssignment.objects.get(
+            slug=f"{course.slug}-lp-circle-fahrzeug-lc-überprüfen-einer-motorfahrzeug-versicherungspolice"
+        ),
+    )
+    next_thursday = datetime.now() + relativedelta(weekday=TH(2))
+    csa.submission_deadline.start = timezone.make_aware(
+        (next_thursday + relativedelta(weeks=3)).replace(
+            hour=23, minute=59, second=59, microsecond=0
+        )
+    )
+    csa.submission_deadline.save()
+    csa.evaluation_deadline.start = timezone.make_aware(
+        (next_thursday + relativedelta(weeks=5)).replace(
+            hour=23, minute=59, second=59, microsecond=0
+        )
+    )
+    csa.evaluation_deadline.save()
+
     # figma demo users and data
     csu = CourseSessionUser.objects.create(
         course_session=cs,
@@ -464,19 +478,19 @@ def create_course_uk_de_completion_data(course_session):
     for circle in circles:
         for index, lc in enumerate(circle.get_descendants().type(LearningContent)):
             mark_course_completion(
-                str(lc.translation_key),
-                User.objects.get(email="lina.egger@example.com"),
+                page=lc,
+                user=User.objects.get(email="lina.egger@example.com"),
                 course_session=course_session,
-                completion_status="success",
+                completion_status="SUCCESS",
             )
 
             random_number = random.randint(1, 3)
             if index % random_number == 0:
                 mark_course_completion(
-                    str(lc.translation_key),
-                    User.objects.get(email="michael.meier@example.com"),
+                    page=lc,
+                    user=User.objects.get(email="michael.meier@example.com"),
                     course_session=course_session,
-                    completion_status="success",
+                    completion_status="SUCCESS",
                 )
 
     performance_criteria = (
@@ -486,26 +500,26 @@ def create_course_uk_de_completion_data(course_session):
     )
     for index, pc in enumerate(performance_criteria):
         mark_course_completion(
-            str(pc.translation_key),
-            User.objects.get(email="lina.egger@example.com"),
+            page=pc,
+            user=User.objects.get(email="lina.egger@example.com"),
             course_session=course_session,
-            completion_status="success",
+            completion_status="SUCCESS",
         )
 
         random_number = random.randint(1, 4)
         if index % random_number == 0:
             mark_course_completion(
-                str(pc.translation_key),
-                User.objects.get(email="michael.meier@example.com"),
+                page=pc,
+                user=User.objects.get(email="michael.meier@example.com"),
                 course_session=course_session,
-                completion_status="success",
+                completion_status="SUCCESS",
             )
         if index % random_number == 1:
             mark_course_completion(
-                str(pc.translation_key),
-                User.objects.get(email="michael.meier@example.com"),
+                page=pc,
+                user=User.objects.get(email="michael.meier@example.com"),
                 course_session=course_session,
-                completion_status="fail",
+                completion_status="FAIL",
             )
 
 
@@ -587,6 +601,7 @@ def create_course_session_assignments(course_session, assignment_slug, i=1):
     if course_session.start_date is None:
         course_session.start_date = datetime.now() + timedelta(days=i * 12)
         course_session.save()
+
     submission_deadline = csa.submission_deadline
     if submission_deadline:
         submission_deadline.start = course_session.start_date + timedelta(days=14)
diff --git a/server/vbv_lernwelt/course/migrations/0006_auto_20230626_1724.py b/server/vbv_lernwelt/course/migrations/0006_auto_20230626_1724.py
new file mode 100644
index 00000000..c2135216
--- /dev/null
+++ b/server/vbv_lernwelt/course/migrations/0006_auto_20230626_1724.py
@@ -0,0 +1,65 @@
+# Generated by Django 3.2.13 on 2023-06-26 15:24
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+import vbv_lernwelt.course.models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("wagtailcore", "0083_workflowcontenttype"),
+        ("course", "0005_remove_coursesession_attendance_courses"),
+    ]
+
+    operations = [
+        migrations.RemoveConstraint(
+            model_name="coursecompletion",
+            name="course_completion_unique_user_page_key",
+        ),
+        migrations.RemoveField(
+            model_name="coursecompletion",
+            name="page_key",
+        ),
+        migrations.RemoveField(
+            model_name="coursecompletion",
+            name="page_slug",
+        ),
+        migrations.AddField(
+            model_name="coursecompletion",
+            name="page",
+            field=models.ForeignKey(
+                default=1,
+                on_delete=django.db.models.deletion.CASCADE,
+                to="wagtailcore.page",
+            ),
+            preserve_default=False,
+        ),
+        migrations.AlterField(
+            model_name="coursecompletion",
+            name="completion_status",
+            field=models.CharField(
+                choices=[
+                    (
+                        vbv_lernwelt.course.models.CourseCompletionStatus["SUCCESS"],
+                        "SUCCESS",
+                    ),
+                    (vbv_lernwelt.course.models.CourseCompletionStatus["FAIL"], "FAIL"),
+                    (
+                        vbv_lernwelt.course.models.CourseCompletionStatus["UNKNOWN"],
+                        "UNKNOWN",
+                    ),
+                ],
+                default="UNKNOWN",
+                max_length=255,
+            ),
+        ),
+        migrations.AddConstraint(
+            model_name="coursecompletion",
+            constraint=models.UniqueConstraint(
+                fields=("user", "page", "course_session"),
+                name="course_completion_unique_user_page_key",
+            ),
+        ),
+    ]
diff --git a/server/vbv_lernwelt/course/migrations/0007_merge_20230711_1108.py b/server/vbv_lernwelt/course/migrations/0007_merge_20230711_1108.py
new file mode 100644
index 00000000..1b1c6991
--- /dev/null
+++ b/server/vbv_lernwelt/course/migrations/0007_merge_20230711_1108.py
@@ -0,0 +1,13 @@
+# Generated by Django 3.2.13 on 2023-07-11 09:08
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("course", "0006_auto_20230626_1724"),
+        ("course", "0006_remove_coursesession_assignment_details_list"),
+    ]
+
+    operations = []
diff --git a/server/vbv_lernwelt/course/models.py b/server/vbv_lernwelt/course/models.py
index c2cd39a2..c13dbc45 100644
--- a/server/vbv_lernwelt/course/models.py
+++ b/server/vbv_lernwelt/course/models.py
@@ -1,3 +1,5 @@
+import enum
+
 from django.db import models
 from django.db.models import UniqueConstraint
 from django.utils.text import slugify
@@ -152,6 +154,12 @@ class CoursePage(CourseBasePage):
         return f"{self.title}"
 
 
+class CourseCompletionStatus(enum.Enum):
+    SUCCESS = "SUCCESS"
+    FAIL = "FAIL"
+    UNKNOWN = "UNKNOWN"
+
+
 class CourseCompletion(models.Model):
     created_at = models.DateTimeField(auto_now_add=True)
     updated_at = models.DateTimeField(auto_now=True)
@@ -159,27 +167,24 @@ class CourseCompletion(models.Model):
     user = models.ForeignKey(User, on_delete=models.CASCADE)
 
     # page can logically be a LearningContent or a PerformanceCriteria for now
-    page_key = models.UUIDField()
+    page = models.ForeignKey(Page, on_delete=models.CASCADE)
+
+    # store for convenience and performance...
     page_type = models.CharField(max_length=255, default="", blank=True)
-    page_slug = models.CharField(max_length=255, default="", blank=True)
 
     course_session = models.ForeignKey("course.CourseSession", on_delete=models.CASCADE)
 
     completion_status = models.CharField(
         max_length=255,
-        choices=[
-            ("unknown", "unknown"),
-            ("success", "success"),
-            ("fail", "fail"),
-        ],
-        default="unknown",
+        choices=[(status, status.value) for status in CourseCompletionStatus],
+        default=CourseCompletionStatus.UNKNOWN.value,
     )
     additional_json_data = models.JSONField(default=dict)
 
     class Meta:
         constraints = [
             UniqueConstraint(
-                fields=["user", "page_key", "course_session"],
+                fields=["user", "page", "course_session"],
                 name="course_completion_unique_user_page_key",
             )
         ]
diff --git a/server/vbv_lernwelt/course/serializers.py b/server/vbv_lernwelt/course/serializers.py
index 7ce71f0a..676aeeda 100644
--- a/server/vbv_lernwelt/course/serializers.py
+++ b/server/vbv_lernwelt/course/serializers.py
@@ -43,10 +43,9 @@ class CourseCompletionSerializer(serializers.ModelSerializer):
             "created_at",
             "updated_at",
             "user",
-            "page_key",
+            "page_id",
             "page_type",
-            "page_slug",
-            "course_session",
+            "course_session_id",
             "completion_status",
             "additional_json_data",
         ]
diff --git a/server/vbv_lernwelt/course/services.py b/server/vbv_lernwelt/course/services.py
index 9bfa561d..b26dd882 100644
--- a/server/vbv_lernwelt/course/services.py
+++ b/server/vbv_lernwelt/course/services.py
@@ -1,20 +1,31 @@
-from wagtail.models import Page
-
-from vbv_lernwelt.course.models import CourseCompletion
+from vbv_lernwelt.course.models import CourseCompletion, CourseCompletionStatus
 from vbv_lernwelt.learnpath.utils import get_wagtail_type
 
 
-def mark_course_completion(page_key, user, course_session, completion_status="success"):
-    page = Page.objects.get(translation_key=page_key, locale__language_code="de-CH")
-    page_type = get_wagtail_type(page.specific)
-    course = page.specific.get_course()
+def mark_course_completion(
+    page, user, course_session, completion_status=CourseCompletionStatus.SUCCESS.value
+):
+    if completion_status not in CourseCompletionStatus.__members__:
+        raise ValueError(
+            f"Invalid value for CourseCompletionStatus: {completion_status}"
+        )
+
+    if not (
+        hasattr(page.specific, "has_course_completion_status")
+        and page.specific.has_course_completion_status
+    ):
+        return ValueError(
+            f"Page {page.id} of type {get_wagtail_type(page)}"
+            f" cannot be marked as completed"
+        )
+
     cc, created = CourseCompletion.objects.get_or_create(
-        user=user,
-        page_key=page_key,
+        user_id=user.id,
+        page_id=page.id,
         course_session_id=course_session.id,
     )
-    cc.page_slug = page.slug
-    cc.page_type = page_type
     cc.completion_status = completion_status
+    cc.page_type = get_wagtail_type(page.specific)
+
     cc.save()
     return cc
diff --git a/server/vbv_lernwelt/course/tests/test_completion_api.py b/server/vbv_lernwelt/course/tests/test_completion_api.py
index 4c5db0af..8a81334f 100644
--- a/server/vbv_lernwelt/course/tests/test_completion_api.py
+++ b/server/vbv_lernwelt/course/tests/test_completion_api.py
@@ -18,7 +18,7 @@ class CourseCompletionApiTestCase(APITestCase):
     def setUp(self) -> None:
         create_default_users()
         create_test_course(include_uk=False)
-        self.user = User.objects.get(username="admin")
+        self.user = User.objects.get(username="test-student1@example.com")
         self.cs = CourseSession.objects.create(
             course_id=COURSE_TEST_ID,
             title="Test Lehrgang Session",
@@ -27,20 +27,19 @@ class CourseCompletionApiTestCase(APITestCase):
             course_session=self.cs,
             user=self.user,
         )
-        self.client.login(username="admin", password="test")
+        self.client.force_login(self.user)
 
-    def test_completeLearningContent_works(self):
+    def test_completeLearningContent_happyCase(self):
         learning_content = LearningContentPlaceholder.objects.get(
             title="Fachcheck Reisen"
         )
-        learning_content_key = str(learning_content.translation_key)
 
         mark_url = f"/api/course/completion/mark/"
 
         response = self.client.post(
             mark_url,
             {
-                "page_key": learning_content_key,
+                "page_id": learning_content.id,
                 "course_session_id": self.cs.id,
             },
         )
@@ -49,13 +48,16 @@ class CourseCompletionApiTestCase(APITestCase):
 
         self.assertEqual(response.status_code, 200)
         self.assertEqual(len(response_json), 1)
-        self.assertEqual(response_json[0]["page_key"], learning_content_key)
-        self.assertEqual(response_json[0]["completion_status"], "success")
+        self.assertEqual(response_json[0]["page_id"], learning_content.id)
+        self.assertEqual(
+            response_json[0]["page_type"], "learnpath.LearningContentPlaceholder"
+        )
+        self.assertEqual(response_json[0]["completion_status"], "SUCCESS")
 
         db_entry = CourseCompletion.objects.get(
-            user=self.user, course_session_id=self.cs.id, page_key=learning_content_key
+            user=self.user, course_session_id=self.cs.id, page_id=learning_content.id
         )
-        self.assertEqual(db_entry.completion_status, "success")
+        self.assertEqual(db_entry.completion_status, "SUCCESS")
 
         # test getting the circle data
         response = self.client.get(f"/api/course/completion/{self.cs.id}/")
@@ -65,15 +67,18 @@ class CourseCompletionApiTestCase(APITestCase):
 
         self.assertEqual(response.status_code, 200)
         self.assertEqual(len(response_json), 1)
-        self.assertEqual(response_json[0]["page_key"], learning_content_key)
-        self.assertTrue(response_json[0]["completion_status"], "success")
+        self.assertEqual(response_json[0]["page_id"], learning_content.id)
+        self.assertEqual(
+            response_json[0]["page_type"], "learnpath.LearningContentPlaceholder"
+        )
+        self.assertEqual(response_json[0]["completion_status"], "SUCCESS")
 
         # test with "fail"
         response = self.client.post(
             mark_url,
             {
-                "page_key": learning_content_key,
-                "completion_status": "fail",
+                "page_id": learning_content.id,
+                "completion_status": "FAIL",
                 "course_session_id": self.cs.id,
             },
         )
@@ -81,10 +86,13 @@ class CourseCompletionApiTestCase(APITestCase):
         response_json = response.json()
         self.assertEqual(response.status_code, 200)
         self.assertEqual(len(response_json), 1)
-        self.assertEqual(response_json[0]["page_key"], learning_content_key)
-        self.assertEqual(response_json[0]["completion_status"], "fail")
+        self.assertEqual(response_json[0]["page_id"], learning_content.id)
+        self.assertEqual(
+            response_json[0]["page_type"], "learnpath.LearningContentPlaceholder"
+        )
+        self.assertEqual(response_json[0]["completion_status"], "FAIL")
 
         db_entry = CourseCompletion.objects.get(
-            user=self.user, course_session_id=self.cs.id, page_key=learning_content_key
+            user=self.user, course_session_id=self.cs.id, page_id=learning_content.id
         )
-        self.assertEqual(db_entry.completion_status, "fail")
+        self.assertEqual(db_entry.completion_status, "FAIL")
diff --git a/server/vbv_lernwelt/course/views.py b/server/vbv_lernwelt/course/views.py
index 13089192..1310b731 100644
--- a/server/vbv_lernwelt/course/views.py
+++ b/server/vbv_lernwelt/course/views.py
@@ -89,20 +89,17 @@ def request_course_completion_for_user(request, course_session_id, user_id):
 @api_view(["POST"])
 def mark_course_completion_view(request):
     try:
-        page_key = request.data.get("page_key")
-        completion_status = request.data.get("completion_status", "success")
+        page_id = request.data.get("page_id")
+        completion_status = request.data.get("completion_status", "SUCCESS")
         course_session_id = request.data.get("course_session_id")
-        page = Page.objects.get(translation_key=page_key, locale__language_code="de-CH")
+        page = Page.objects.get(id=page_id)
 
         if not has_course_access_by_page_request(request, page):
             raise PermissionDenied()
 
-        page_type = get_wagtail_type(page.specific)
-        course = page.specific.get_course()
-
         mark_course_completion(
-            page_key,
-            request.user,
+            page=page,
+            user=request.user,
             course_session=CourseSession.objects.get(id=course_session_id),
             completion_status=completion_status,
         )
@@ -117,8 +114,8 @@ def mark_course_completion_view(request):
         logger.debug(
             "mark_course_completion successful",
             label="completion_api",
-            page_key=page_key,
-            page_type=page_type,
+            page_id=page_id,
+            page_type=get_wagtail_type(page.specific),
             page_slug=page.slug,
             page_title=page.title,
             user_id=request.user.id,
diff --git a/server/vbv_lernwelt/course_session/admin.py b/server/vbv_lernwelt/course_session/admin.py
index b0970a8e..da09cef2 100644
--- a/server/vbv_lernwelt/course_session/admin.py
+++ b/server/vbv_lernwelt/course_session/admin.py
@@ -9,7 +9,12 @@ from vbv_lernwelt.course_session.models import (
 @admin.register(CourseSessionAttendanceCourse)
 class CourseSessionAttendanceCourseAdmin(admin.ModelAdmin):
     # Inline fields are not possible for the DueDate model, because it is not a ForeignKey relatoion.
-    readonly_fields = ["course_session", "learning_content", "due_date"]
+    readonly_fields = [
+        "course_session",
+        "learning_content",
+        "due_date",
+        "attendance_user_list",
+    ]
     list_display = [
         "course_session",
         "learning_content",
diff --git a/server/vbv_lernwelt/course_session/graphql/__init__.py b/server/vbv_lernwelt/course_session/graphql/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/server/vbv_lernwelt/course_session/graphql/mutations.py b/server/vbv_lernwelt/course_session/graphql/mutations.py
new file mode 100644
index 00000000..64e6c15f
--- /dev/null
+++ b/server/vbv_lernwelt/course_session/graphql/mutations.py
@@ -0,0 +1,57 @@
+import graphene
+import structlog
+from rest_framework.exceptions import PermissionDenied
+
+from vbv_lernwelt.course.permissions import has_course_access
+from vbv_lernwelt.course_session.graphql.types import CourseSessionAttendanceCourseType
+from vbv_lernwelt.course_session.models import CourseSessionAttendanceCourse
+from vbv_lernwelt.course_session.services.attendance import (
+    AttendanceUserStatus,
+    update_attendance_list,
+)
+
+logger = structlog.get_logger(__name__)
+
+
+class AttendanceUserInputType(graphene.InputObjectType):
+    user_id = graphene.ID(required=True)
+    status = graphene.Field(
+        graphene.Enum.from_enum(AttendanceUserStatus), required=True
+    )
+
+
+class AttendanceCourseUserMutation(graphene.Mutation):
+    course_session_attendance_course = graphene.Field(CourseSessionAttendanceCourseType)
+
+    class Input:
+        id = graphene.ID(required=True)
+        attendance_user_list = graphene.List(AttendanceUserInputType, required=True)
+
+    @classmethod
+    def mutate(
+        cls,
+        root,
+        info,
+        id,
+        attendance_user_list,
+    ):
+        attendance_course = CourseSessionAttendanceCourse.objects.get(id=id)
+
+        if not attendance_course or not has_course_access(
+            info.context.user,
+            attendance_course.course_session.course_id,
+        ):
+            raise PermissionDenied()
+
+        attendance_course = update_attendance_list(
+            attendance_course=attendance_course,
+            attendance_user_list=attendance_user_list,
+        )
+
+        return AttendanceCourseUserMutation(
+            course_session_attendance_course=attendance_course
+        )
+
+
+class CourseSessionMutation:
+    update_course_session_attendance_course_users = AttendanceCourseUserMutation.Field()
diff --git a/server/vbv_lernwelt/course_session/graphql/queries.py b/server/vbv_lernwelt/course_session/graphql/queries.py
new file mode 100644
index 00000000..66f61994
--- /dev/null
+++ b/server/vbv_lernwelt/course_session/graphql/queries.py
@@ -0,0 +1,41 @@
+import graphene
+from rest_framework.exceptions import PermissionDenied
+
+from vbv_lernwelt.course.models import CourseSession
+from vbv_lernwelt.course.permissions import has_course_access, is_course_session_expert
+from vbv_lernwelt.course_session.graphql.types import CourseSessionAttendanceCourseType
+from vbv_lernwelt.course_session.models import CourseSessionAttendanceCourse
+
+
+class CourseSessionQuery(object):
+    course_session_attendance_course = graphene.Field(
+        CourseSessionAttendanceCourseType,
+        id=graphene.ID(required=True),
+        assignment_user_id=graphene.ID(required=False),
+    )
+
+    def resolve_course_session_attendance_course(
+        root,
+        info,
+        id=None,
+        user_id=graphene.ID(required=False),
+    ):
+        if user_id is None:
+            user_id = info.context.user.id
+
+        attendance_course = CourseSessionAttendanceCourse.objects.filter(
+            id=id,
+        ).first()
+
+        if attendance_course is None:
+            return None
+
+        if str(user_id) == str(info.context.user.id) or is_course_session_expert(
+            info.context.user, attendance_course.course_session_id
+        ):
+            course_id = CourseSession.objects.get(
+                id=attendance_course.course_session_id
+            ).course_id
+            if has_course_access(info.context.user, course_id):
+                return attendance_course
+        raise PermissionDenied()
diff --git a/server/vbv_lernwelt/course_session/graphql/types.py b/server/vbv_lernwelt/course_session/graphql/types.py
new file mode 100644
index 00000000..36dd82f1
--- /dev/null
+++ b/server/vbv_lernwelt/course_session/graphql/types.py
@@ -0,0 +1,49 @@
+import graphene
+from graphene_django import DjangoObjectType
+
+from vbv_lernwelt.course_session.models import CourseSessionAttendanceCourse
+from vbv_lernwelt.course_session.services.attendance import AttendanceUserStatus
+
+
+class AttendanceUserType(graphene.ObjectType):
+    user_id = graphene.ID(required=True)
+    status = graphene.Field(
+        graphene.Enum.from_enum(AttendanceUserStatus), required=True
+    )
+    first_name = graphene.String()
+    last_name = graphene.String()
+    email = graphene.String()
+
+
+class CourseSessionAttendanceCourseType(DjangoObjectType):
+    course_session_id = graphene.ID(source="course_session_id")
+    learning_content_id = graphene.ID(source="learning_content_id")
+    due_date_id = graphene.ID(source="due_date_id")
+    end = graphene.DateTime()
+    start = graphene.DateTime()
+    attendance_user_list = graphene.List(
+        AttendanceUserType, source="attendance_user_list"
+    )
+
+    class Meta:
+        model = CourseSessionAttendanceCourse
+        fields = (
+            "id",
+            "course_session_id",
+            "learning_content_id",
+            "due_date_id",
+            "location",
+            "trainer",
+            "start",
+            "end",
+        )
+
+    def resolve_start(self, info):
+        if self.due_date is None:
+            return None
+        return self.due_date.start
+
+    def resolve_end(self, info):
+        if self.due_date is None:
+            return None
+        return self.due_date.end
diff --git a/server/vbv_lernwelt/course_session/migrations/0002_coursesessionattendancecourse_attendance_user_list.py b/server/vbv_lernwelt/course_session/migrations/0002_coursesessionattendancecourse_attendance_user_list.py
new file mode 100644
index 00000000..0fe26463
--- /dev/null
+++ b/server/vbv_lernwelt/course_session/migrations/0002_coursesessionattendancecourse_attendance_user_list.py
@@ -0,0 +1,18 @@
+# Generated by Django 3.2.13 on 2023-06-23 15:17
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("course_session", "0001_initial"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="coursesessionattendancecourse",
+            name="attendance_user_list",
+            field=models.JSONField(default=list),
+        ),
+    ]
diff --git a/server/vbv_lernwelt/course_session/migrations/0004_merge_20230711_1108.py b/server/vbv_lernwelt/course_session/migrations/0004_merge_20230711_1108.py
new file mode 100644
index 00000000..f607ebe8
--- /dev/null
+++ b/server/vbv_lernwelt/course_session/migrations/0004_merge_20230711_1108.py
@@ -0,0 +1,13 @@
+# Generated by Django 3.2.13 on 2023-07-11 09:08
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("course_session", "0002_coursesessionattendancecourse_attendance_user_list"),
+        ("course_session", "0003_auto_20230628_1321"),
+    ]
+
+    operations = []
diff --git a/server/vbv_lernwelt/course_session/models.py b/server/vbv_lernwelt/course_session/models.py
index 91d9f7f6..3408ae32 100644
--- a/server/vbv_lernwelt/course_session/models.py
+++ b/server/vbv_lernwelt/course_session/models.py
@@ -1,5 +1,6 @@
 from django.db import models
 from django.utils.translation import gettext_lazy as _
+from django_jsonform.models.fields import JSONField as JSONSchemaField
 
 from vbv_lernwelt.assignment.models import AssignmentType
 from vbv_lernwelt.duedate.models import DueDate
@@ -29,6 +30,28 @@ class CourseSessionAttendanceCourse(models.Model):
     location = models.CharField(max_length=255, blank=True, default="")
     trainer = models.CharField(max_length=255, blank=True, default="")
 
+    # because the attendance list is more of a snapshot of the current state
+    # we will store the attendance list as a JSONField
+    # the important field of the list type is "user_id"
+    ATTENDANCE_USER_LIST_SCHEMA = {
+        "type": "array",
+        "items": {
+            "type": "object",
+            "properties": {
+                "user_id": {
+                    "type": "number",
+                    "required": True,
+                },
+                "email": {"type": "string"},
+                "first_name": {"type": "string"},
+                "last_name": {"type": "string"},
+            },
+        },
+    }
+    attendance_user_list = JSONSchemaField(
+        default=list, schema=ATTENDANCE_USER_LIST_SCHEMA
+    )
+
     def save(self, *args, **kwargs):
         if not self.pk:
             title = ""
diff --git a/server/vbv_lernwelt/course_session/serializers.py b/server/vbv_lernwelt/course_session/serializers.py
index defd7c6a..3e176f0c 100644
--- a/server/vbv_lernwelt/course_session/serializers.py
+++ b/server/vbv_lernwelt/course_session/serializers.py
@@ -14,7 +14,7 @@ class CourseSessionAttendanceCourseSerializer(serializers.ModelSerializer):
         model = CourseSessionAttendanceCourse
         fields = [
             "id",
-            "course_session_id",
+            "course_session",
             "learning_content_id",
             "due_date_id",
             "location",
diff --git a/server/vbv_lernwelt/course_session/services/attendance.py b/server/vbv_lernwelt/course_session/services/attendance.py
new file mode 100644
index 00000000..22802943
--- /dev/null
+++ b/server/vbv_lernwelt/course_session/services/attendance.py
@@ -0,0 +1,73 @@
+import enum
+from typing import List, TypedDict
+
+from vbv_lernwelt.core.models import User
+from vbv_lernwelt.course.services import mark_course_completion
+from vbv_lernwelt.course_session.models import CourseSessionAttendanceCourse
+
+
+class AttendanceUserStatus(enum.Enum):
+    PRESENT = "PRESENT"
+    ABSENT = "ABSENT"
+
+
+class AttendanceUser(TypedDict):
+    user_id: str
+    status: AttendanceUserStatus
+
+
+def update_attendance_list(
+    attendance_course: CourseSessionAttendanceCourse,
+    attendance_user_list: List[AttendanceUser],
+):
+    user_id_set_before = set(
+        [u["user_id"] for u in attendance_course.attendance_user_list]
+    )
+
+    result_user_list = []
+    for attendance_user in attendance_user_list:
+        u = User.objects.filter(id=attendance_user.get("user_id")).first()
+        if u is not None:
+            result_user_list.append(
+                {
+                    "user_id": u.id,
+                    "status": attendance_user.get(
+                        "status", AttendanceUserStatus.PRESENT
+                    ).value,
+                    "email": u.email,
+                    "first_name": u.first_name,
+                    "last_name": u.last_name,
+                }
+            )
+            completion_status = (
+                "SUCCESS"
+                if attendance_user.get("status").value == "PRESENT"
+                else "FAIL"
+            )
+            mark_course_completion(
+                page=attendance_course.learning_content,
+                user=u,
+                course_session=attendance_course.course_session,
+                completion_status=completion_status,
+            )
+
+    attendance_course.attendance_user_list = result_user_list
+    attendance_course.save()
+
+    user_id_set_after = set(
+        [u["user_id"] for u in attendance_course.attendance_user_list]
+    )
+
+    user_id_set_removed = user_id_set_before - user_id_set_after
+
+    for user_id in user_id_set_removed:
+        u = User.objects.filter(id=user_id).first()
+        if u is not None:
+            mark_course_completion(
+                page=attendance_course.learning_content,
+                user=u,
+                course_session=attendance_course.course_session,
+                completion_status="FAIL",
+            )
+
+    return attendance_course
diff --git a/server/vbv_lernwelt/course_session/tests/test_attendance.py b/server/vbv_lernwelt/course_session/tests/test_attendance.py
new file mode 100644
index 00000000..841da952
--- /dev/null
+++ b/server/vbv_lernwelt/course_session/tests/test_attendance.py
@@ -0,0 +1,89 @@
+from django.test import TestCase
+
+from vbv_lernwelt.core.create_default_users import create_default_users
+from vbv_lernwelt.core.models import User
+from vbv_lernwelt.course.creators.test_course import create_test_course
+from vbv_lernwelt.course.models import CourseCompletion, CourseSession
+from vbv_lernwelt.course.services import mark_course_completion
+from vbv_lernwelt.course_session.models import CourseSessionAttendanceCourse
+from vbv_lernwelt.course_session.services.attendance import (
+    AttendanceUserStatus,
+    update_attendance_list,
+)
+
+
+class AttendanceServicesTestCase(TestCase):
+    def setUp(self):
+        create_default_users()
+        create_test_course(include_vv=False, with_sessions=True)
+        self.course_session = CourseSession.objects.get(title="Test Bern 2022 a")
+        self.attendance_course = (
+            self.course_session.coursesessionattendancecourse_set.first()
+        )
+        self.trainer = User.objects.get(username="test-trainer1@example.com")
+        self.client.force_login(self.trainer)
+
+    def test_updateAttendanceList_withSingleUserId_findsDetailsAndStoresResult(self):
+        student = User.objects.get(username="test-student1@example.com")
+
+        update_attendance_list(
+            self.attendance_course,
+            [{"user_id": student.id, "status": AttendanceUserStatus.PRESENT}],
+        )
+
+        attendance_course = CourseSessionAttendanceCourse.objects.get(
+            id=self.attendance_course.id
+        )
+        self.assertEqual(
+            attendance_course.attendance_user_list[0]["user_id"], student.id
+        )
+        self.assertEqual(
+            attendance_course.attendance_user_list,
+            [
+                {
+                    "email": "test-student1@example.com",
+                    "status": "PRESENT",
+                    "user_id": -21,
+                    "last_name": "Student1",
+                    "first_name": "Test",
+                }
+            ],
+        )
+
+    def test_updateAttendanceList_willUpdateUserCourseCompletion(self):
+        student = User.objects.get(username="test-student1@example.com")
+        update_attendance_list(
+            self.attendance_course,
+            [{"user_id": student.id, "status": AttendanceUserStatus.PRESENT}],
+        )
+        self.assertEqual(CourseCompletion.objects.count(), 1)
+        cc = CourseCompletion.objects.first()
+        self.assertEqual(cc.user, student)
+        self.assertEqual(cc.completion_status, "SUCCESS")
+        self.assertEqual(cc.page_id, self.attendance_course.learning_content.id)
+
+    def test_updateAttendanceList_withRemovedUser_willUpdateUserCourseCompletion(self):
+        student = User.objects.get(username="test-student1@example.com")
+        self.attendance_course.attendance_user_list = [
+            {
+                "email": "test-student1@example.com",
+                "status": "PRESENT",
+                "user_id": "-21",
+                "last_name": "Student1",
+                "first_name": "Test",
+            }
+        ]
+        self.attendance_course.save()
+        mark_course_completion(
+            page=self.attendance_course.learning_content,
+            user=student,
+            course_session=self.course_session,
+            completion_status="SUCCESS",
+        )
+        update_attendance_list(self.attendance_course, [])
+
+        self.assertEqual(CourseCompletion.objects.count(), 1)
+        cc = CourseCompletion.objects.first()
+        self.assertEqual(cc.user, student)
+        self.assertEqual(cc.completion_status, "FAIL")
+        self.assertEqual(cc.page_id, self.attendance_course.learning_content.id)
diff --git a/server/vbv_lernwelt/course_session/tests/test_graphql.py b/server/vbv_lernwelt/course_session/tests/test_graphql.py
new file mode 100644
index 00000000..fcb4aab0
--- /dev/null
+++ b/server/vbv_lernwelt/course_session/tests/test_graphql.py
@@ -0,0 +1,96 @@
+import json
+
+from graphene_django.utils.testing import GraphQLTestCase
+
+from vbv_lernwelt.core.create_default_users import create_default_users
+from vbv_lernwelt.core.models import User
+from vbv_lernwelt.course.creators.test_course import create_test_course
+from vbv_lernwelt.course.models import CourseSession
+
+
+class AttendanceCourseUserMutationTestCase(GraphQLTestCase):
+    GRAPHQL_URL = "/server/graphql/"
+
+    def setUp(self):
+        create_default_users()
+        create_test_course(include_vv=False, with_sessions=True)
+        self.course_session = CourseSession.objects.get(title="Test Bern 2022 a")
+        self.attendance_course = (
+            self.course_session.coursesessionattendancecourse_set.first()
+        )
+        self.trainer = User.objects.get(username="test-trainer1@example.com")
+        self.client.force_login(self.trainer)
+
+    def test_simple_query(self):
+        response = self.query(
+            f"""
+            {{
+              course_session_attendance_course(id:{self.attendance_course.id}) {{
+                id
+                trainer
+              }}
+            }}
+            """
+        )
+
+        content = json.loads(response.content)
+
+        self.assertResponseNoErrors(response)
+        self.assertEqual(
+            content["data"]["course_session_attendance_course"]["trainer"],
+            "Roland Grossenbacher, roland.grossenbacher@helvetia.ch",
+        )
+
+    def test_mutation_add_user_when_present(self):
+        student = User.objects.get(username="test-student1@example.com")
+
+        query = f"""
+        mutation {{
+          update_course_session_attendance_course_users(
+            id:{self.attendance_course.id}, 
+            attendance_user_list:[
+              {{user_id: {student.id}, status: PRESENT}},
+              {{user_id: "123123123", status: PRESENT}},
+            ]
+          ) {{
+            course_session_attendance_course {{
+              id
+              attendance_user_list {{
+                user_id
+                first_name
+                last_name
+                email
+                status
+              }}
+            }}
+          }}
+        }}
+        """
+        print(query)
+        response = self.query(query)
+        self.assertResponseNoErrors(response)
+
+        data = json.loads(response.content)
+
+        self.maxDiff = None
+        self.assertDictEqual(
+            {
+                "data": {
+                    "update_course_session_attendance_course_users": {
+                        "course_session_attendance_course": {
+                            "id": str(self.attendance_course.id),
+                            "attendance_user_list": [
+                                {
+                                    "user_id": str(student.id),
+                                    "first_name": student.first_name,
+                                    "last_name": student.last_name,
+                                    "email": student.email,
+                                    "status": "PRESENT",
+                                }
+                            ],
+                        }
+                    }
+                }
+            },
+            data,
+        )
diff --git a/server/vbv_lernwelt/learnpath/migrations/0008_auto_20230626_1747.py b/server/vbv_lernwelt/learnpath/migrations/0008_auto_20230626_1747.py
new file mode 100644
index 00000000..ee442287
--- /dev/null
+++ b/server/vbv_lernwelt/learnpath/migrations/0008_auto_20230626_1747.py
@@ -0,0 +1,112 @@
+# Generated by Django 3.2.13 on 2023-06-26 15:47
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("learnpath", "0007_learningunit_title_hidden"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="learningcontentassignment",
+            name="can_user_self_toggle_course_completion",
+            field=models.BooleanField(default=False),
+        ),
+        migrations.AddField(
+            model_name="learningcontentassignment",
+            name="has_course_completion_status",
+            field=models.BooleanField(default=True),
+        ),
+        migrations.AddField(
+            model_name="learningcontentattendancecourse",
+            name="can_user_self_toggle_course_completion",
+            field=models.BooleanField(default=False),
+        ),
+        migrations.AddField(
+            model_name="learningcontentattendancecourse",
+            name="has_course_completion_status",
+            field=models.BooleanField(default=True),
+        ),
+        migrations.AddField(
+            model_name="learningcontentdocumentlist",
+            name="can_user_self_toggle_course_completion",
+            field=models.BooleanField(default=True),
+        ),
+        migrations.AddField(
+            model_name="learningcontentdocumentlist",
+            name="has_course_completion_status",
+            field=models.BooleanField(default=True),
+        ),
+        migrations.AddField(
+            model_name="learningcontentfeedback",
+            name="can_user_self_toggle_course_completion",
+            field=models.BooleanField(default=True),
+        ),
+        migrations.AddField(
+            model_name="learningcontentfeedback",
+            name="has_course_completion_status",
+            field=models.BooleanField(default=True),
+        ),
+        migrations.AddField(
+            model_name="learningcontentlearningmodule",
+            name="can_user_self_toggle_course_completion",
+            field=models.BooleanField(default=True),
+        ),
+        migrations.AddField(
+            model_name="learningcontentlearningmodule",
+            name="has_course_completion_status",
+            field=models.BooleanField(default=True),
+        ),
+        migrations.AddField(
+            model_name="learningcontentmedialibrary",
+            name="can_user_self_toggle_course_completion",
+            field=models.BooleanField(default=True),
+        ),
+        migrations.AddField(
+            model_name="learningcontentmedialibrary",
+            name="has_course_completion_status",
+            field=models.BooleanField(default=True),
+        ),
+        migrations.AddField(
+            model_name="learningcontentplaceholder",
+            name="can_user_self_toggle_course_completion",
+            field=models.BooleanField(default=True),
+        ),
+        migrations.AddField(
+            model_name="learningcontentplaceholder",
+            name="has_course_completion_status",
+            field=models.BooleanField(default=True),
+        ),
+        migrations.AddField(
+            model_name="learningcontentrichtext",
+            name="can_user_self_toggle_course_completion",
+            field=models.BooleanField(default=True),
+        ),
+        migrations.AddField(
+            model_name="learningcontentrichtext",
+            name="has_course_completion_status",
+            field=models.BooleanField(default=True),
+        ),
+        migrations.AddField(
+            model_name="learningcontenttest",
+            name="can_user_self_toggle_course_completion",
+            field=models.BooleanField(default=False),
+        ),
+        migrations.AddField(
+            model_name="learningcontenttest",
+            name="has_course_completion_status",
+            field=models.BooleanField(default=True),
+        ),
+        migrations.AddField(
+            model_name="learningcontentvideo",
+            name="can_user_self_toggle_course_completion",
+            field=models.BooleanField(default=True),
+        ),
+        migrations.AddField(
+            model_name="learningcontentvideo",
+            name="has_course_completion_status",
+            field=models.BooleanField(default=True),
+        ),
+    ]
diff --git a/server/vbv_lernwelt/learnpath/migrations/0009_alter_learningcontentassignment_content_assignment.py b/server/vbv_lernwelt/learnpath/migrations/0009_alter_learningcontentassignment_content_assignment.py
new file mode 100644
index 00000000..076c78c6
--- /dev/null
+++ b/server/vbv_lernwelt/learnpath/migrations/0009_alter_learningcontentassignment_content_assignment.py
@@ -0,0 +1,22 @@
+# Generated by Django 3.2.13 on 2023-06-26 16:30
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("assignment", "0004_assignment_assignment_type"),
+        ("learnpath", "0008_auto_20230626_1747"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="learningcontentassignment",
+            name="content_assignment",
+            field=models.ForeignKey(
+                on_delete=django.db.models.deletion.PROTECT, to="assignment.assignment"
+            ),
+        ),
+    ]
diff --git a/server/vbv_lernwelt/learnpath/migrations/0010_merge_20230711_1108.py b/server/vbv_lernwelt/learnpath/migrations/0010_merge_20230711_1108.py
new file mode 100644
index 00000000..0b85ed9c
--- /dev/null
+++ b/server/vbv_lernwelt/learnpath/migrations/0010_merge_20230711_1108.py
@@ -0,0 +1,13 @@
+# Generated by Django 3.2.13 on 2023-07-11 09:08
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("learnpath", "0008_alter_learningcontentassignment_content_assignment"),
+        ("learnpath", "0009_alter_learningcontentassignment_content_assignment"),
+    ]
+
+    operations = []
diff --git a/server/vbv_lernwelt/learnpath/models.py b/server/vbv_lernwelt/learnpath/models.py
index 4dc97429..765f5aa9 100644
--- a/server/vbv_lernwelt/learnpath/models.py
+++ b/server/vbv_lernwelt/learnpath/models.py
@@ -234,17 +234,21 @@ class LearningContent(CourseBasePage):
         "minutes",
         "description",
         "content_url",
+        "can_user_self_toggle_course_completion",
     ]
 
     minutes = models.PositiveIntegerField(default=15)
     description = RichTextField(blank=True)
     content_url = models.TextField(blank=True)
+    has_course_completion_status = models.BooleanField(default=True)
+    can_user_self_toggle_course_completion = models.BooleanField(default=False)
 
     content_panels = [
         FieldPanel("title", classname="full title"),
         FieldPanel("minutes"),
         FieldPanel("content_url"),
         FieldPanel("description"),
+        FieldPanel("can_user_self_toggle_course_completion"),
     ]
 
     def get_admin_display_title(self):
@@ -290,26 +294,31 @@ class LearningContentAttendanceCourse(LearningContent):
 class LearningContentVideo(LearningContent):
     parent_page_types = ["learnpath.Circle"]
     subpage_types = []
+    can_user_self_toggle_course_completion = models.BooleanField(default=True)
 
 
 class LearningContentPlaceholder(LearningContent):
     parent_page_types = ["learnpath.Circle"]
     subpage_types = []
+    can_user_self_toggle_course_completion = models.BooleanField(default=True)
 
 
 class LearningContentFeedback(LearningContent):
     parent_page_types = ["learnpath.Circle"]
     subpage_types = []
+    can_user_self_toggle_course_completion = models.BooleanField(default=True)
 
 
 class LearningContentLearningModule(LearningContent):
     parent_page_types = ["learnpath.Circle"]
     subpage_types = []
+    can_user_self_toggle_course_completion = models.BooleanField(default=True)
 
 
 class LearningContentMediaLibrary(LearningContent):
     parent_page_types = ["learnpath.Circle"]
     subpage_types = []
+    can_user_self_toggle_course_completion = models.BooleanField(default=True)
 
 
 class LearningContentTest(LearningContent):
@@ -328,6 +337,7 @@ class LearningContentTest(LearningContent):
 
 class LearningContentRichText(LearningContent):
     text = RichTextField(blank=True, features=DEFAULT_RICH_TEXT_FEATURES_WITH_HEADER)
+    can_user_self_toggle_course_completion = models.BooleanField(default=True)
 
     parent_page_types = ["learnpath.Circle"]
     serialize_field_names = LearningContent.serialize_field_names + [
@@ -368,6 +378,8 @@ class LearningContentAssignment(LearningContent):
 
 
 class LearningContentDocumentList(LearningContent):
+    can_user_self_toggle_course_completion = models.BooleanField(default=True)
+
     serialize_field_names = LearningContent.serialize_field_names + [
         "documents",
     ]
diff --git a/server/vbv_lernwelt/learnpath/serializers.py b/server/vbv_lernwelt/learnpath/serializers.py
index d39bb9fb..42c576c3 100644
--- a/server/vbv_lernwelt/learnpath/serializers.py
+++ b/server/vbv_lernwelt/learnpath/serializers.py
@@ -10,7 +10,12 @@ from vbv_lernwelt.learnpath.models import LearningUnit
 class LearningUnitSerializer(
     get_course_serializer_class(
         LearningUnit,
-        field_names=["evaluate_url", "course_category", "children", "title_hidden"],
+        field_names=[
+            "evaluate_url",
+            "course_category",
+            "children",
+            "title_hidden",
+        ],
     )
 ):
     evaluate_url = SerializerMethodField()