diff --git a/client/src/components/header/CoursePreviewBar.vue b/client/src/components/header/CoursePreviewBar.vue
index f0d92383..e344ae65 100644
--- a/client/src/components/header/CoursePreviewBar.vue
+++ b/client/src/components/header/CoursePreviewBar.vue
@@ -2,7 +2,7 @@
 import { useTranslation } from "i18next-vue";
 import { useRouteLookups } from "@/utils/route";
 import { useCurrentCourseSession } from "@/composables";
-import { getCompetenceBaseUrl } from "@/utils/utils";
+import { getCompetenceNaviUrl, getLearningPathUrl } from "@/utils/utils";
 
 const { inCompetenceProfile, inLearningPath } = useRouteLookups();
 const courseSession = useCurrentCourseSession();
@@ -24,7 +24,7 @@ const { t } = useTranslation();
           <div class="flex space-x-8">
             <router-link
               data-cy="preview-learn-path-link"
-              :to="courseSession.learning_path_url"
+              :to="getLearningPathUrl(courseSession)"
               class="preview-nav-item"
               :class="{ 'preview-nav-item--active': inLearningPath() }"
             >
@@ -33,7 +33,7 @@ const { t } = useTranslation();
 
             <router-link
               data-cy="preview-competence-profile-link"
-              :to="getCompetenceBaseUrl(courseSession)"
+              :to="getCompetenceNaviUrl(courseSession)"
               class="preview-nav-item"
               :class="{ 'preview-nav-item--active': inCompetenceProfile() }"
             >
diff --git a/client/src/components/header/MainNavigationBar.vue b/client/src/components/header/MainNavigationBar.vue
index c95e586e..72c829ec 100644
--- a/client/src/components/header/MainNavigationBar.vue
+++ b/client/src/components/header/MainNavigationBar.vue
@@ -15,7 +15,11 @@ import { breakpointsTailwind, useBreakpoints } from "@vueuse/core";
 import { computed, onMounted, reactive } from "vue";
 import { useTranslation } from "i18next-vue";
 import CoursePreviewBar from "@/components/header/CoursePreviewBar.vue";
-import { getCompetenceBaseUrl } from "@/utils/utils";
+import {
+  getCompetenceNaviUrl,
+  getLearningPathUrl,
+  getMediaCenterUrl,
+} from "@/utils/utils";
 
 log.debug("MainNavigationBar created");
 
@@ -71,7 +75,7 @@ onMounted(() => {
         v-if="userStore.loggedIn"
         :show="state.showMobileNavigationMenu"
         :course-session="courseSessionsStore.currentCourseSession"
-        :media-url="courseSessionsStore.currentCourseSession?.media_library_url"
+        :media-url="getMediaCenterUrl(courseSessionsStore.currentCourseSession)"
         :user="userStore"
         @closemodal="state.showMobileNavigationMenu = false"
         @logout="userStore.handleLogout()"
@@ -138,7 +142,7 @@ onMounted(() => {
 
                     <router-link
                       data-cy="navigation-preview-link"
-                      :to="courseSessionsStore.currentCourseSession.learning_path_url"
+                      :to="getLearningPathUrl(courseSessionsStore.currentCourseSession)"
                       target="_blank"
                       class="nav-item"
                     >
@@ -151,7 +155,7 @@ onMounted(() => {
                   <template v-else>
                     <router-link
                       data-cy="navigation-learning-path-link"
-                      :to="courseSessionsStore.currentCourseSession.learning_path_url"
+                      :to="getLearningPathUrl(courseSessionsStore.currentCourseSession)"
                       class="nav-item"
                       :class="{ 'nav-item--active': inLearningPath() }"
                     >
@@ -161,7 +165,7 @@ onMounted(() => {
                     <router-link
                       data-cy="navigation-competence-profile-link"
                       :to="
-                        getCompetenceBaseUrl(courseSessionsStore.currentCourseSession)
+                        getCompetenceNaviUrl(courseSessionsStore.currentCourseSession)
                       "
                       class="nav-item"
                       :class="{ 'nav-item--active': inCompetenceProfile() }"
@@ -176,7 +180,7 @@ onMounted(() => {
             <div class="flex items-stretch justify-start space-x-8">
               <router-link
                 v-if="inCourse() && courseSessionsStore.currentCourseSession"
-                :to="courseSessionsStore.currentCourseSession.media_library_url"
+                :to="getMediaCenterUrl(courseSessionsStore.currentCourseSession)"
                 data-cy="medialibrary-link"
                 class="nav-item-no-mobile"
                 :class="{ 'nav-item--active': inMediaLibrary() }"
diff --git a/client/src/components/header/MobileMenu.vue b/client/src/components/header/MobileMenu.vue
index 63bd914e..60f2497b 100644
--- a/client/src/components/header/MobileMenu.vue
+++ b/client/src/components/header/MobileMenu.vue
@@ -4,7 +4,11 @@ import { useCourseSessionsStore } from "@/stores/courseSessions";
 import type { UserState } from "@/stores/user";
 import type { CourseSession } from "@/types";
 import { useRouter } from "vue-router";
-import { getCompetenceBaseUrl } from "@/utils/utils";
+import {
+  getCompetenceNaviUrl,
+  getLearningPathUrl,
+  getMediaCenterUrl,
+} from "@/utils/utils";
 
 const router = useRouter();
 
@@ -68,7 +72,7 @@ const courseSessionsStore = useCourseSessionsStore();
                 <li class="mb-6">
                   <button
                     data-cy="navigation-mobile-preview-link"
-                    @click="clickLink(courseSession.learning_path_url)"
+                    @click="clickLink(getLearningPathUrl(courseSession))"
                   >
                     {{ $t("a.VorschauTeilnehmer") }}
                   </button>
@@ -78,7 +82,7 @@ const courseSessionsStore = useCourseSessionsStore();
                 <li class="mb-6">
                   <button
                     data-cy="navigation-mobile-learning-path-link"
-                    @click="clickLink(courseSession.learning_path_url)"
+                    @click="clickLink(getLearningPathUrl(courseSession))"
                   >
                     {{ $t("general.learningPath") }}
                   </button>
@@ -86,7 +90,7 @@ const courseSessionsStore = useCourseSessionsStore();
                 <li class="mb-6">
                   <button
                     data-cy="navigation-mobile-competence-profile-link"
-                    @click="clickLink(getCompetenceBaseUrl(courseSession))"
+                    @click="clickLink(getCompetenceNaviUrl(courseSession))"
                   >
                     {{ $t("competences.title") }}
                   </button>
@@ -95,7 +99,7 @@ const courseSessionsStore = useCourseSessionsStore();
               <li class="mb-6">
                 <button
                   data-cy="medialibrary-link"
-                  @click="clickLink(`${courseSession?.media_library_url}`)"
+                  @click="clickLink(getMediaCenterUrl(courseSession))"
                 >
                   {{ $t("a.Mediathek") }}
                 </button>
diff --git a/client/src/composables.ts b/client/src/composables.ts
index ffd1b590..531c722f 100644
--- a/client/src/composables.ts
+++ b/client/src/composables.ts
@@ -1,5 +1,9 @@
 import { useCourseSessionsStore } from "@/stores/courseSessions";
-import type { CourseSession } from "@/types";
+import type { CourseSession, CourseSessionDetail } from "@/types";
+import { useQuery } from "@urql/vue";
+
+import { COURSE_SESSION_DETAIL_QUERY } from "@/graphql/queries";
+import { useUserStore } from "@/stores/user";
 import log from "loglevel";
 import type { ComputedRef } from "vue";
 import { computed } from "vue";
@@ -28,3 +32,52 @@ export function useCurrentCourseSession() {
   );
   return result;
 }
+
+export function useCourseSessionDetailQuery(courSessionId?: string | number) {
+  if (!courSessionId) {
+    courSessionId = useCurrentCourseSession().value.id;
+  }
+  const queryResult = useQuery({
+    query: COURSE_SESSION_DETAIL_QUERY,
+    variables: {
+      courseSessionId: courSessionId.toString(),
+    },
+  });
+
+  const courseSessionDetail = computed(() => {
+    return queryResult.data.value?.course_session as CourseSessionDetail | undefined;
+  });
+
+  function findAssignmentDetail(assignmentId: string) {
+    return (courseSessionDetail.value?.assignments ?? []).find((a) => {
+      return a.learning_content?.content_assignment?.id === assignmentId;
+    });
+  }
+
+  function findUser(userId: string) {
+    return (courseSessionDetail.value?.users ?? []).find((u) => {
+      return u.user_id === userId;
+    });
+  }
+
+  function findCurrentUser() {
+    const userStore = useUserStore();
+    const userId = userStore.id;
+    return findUser(userId);
+  }
+
+  function filterMembers() {
+    return (courseSessionDetail.value?.users ?? []).filter((u) => {
+      return u.role === "MEMBER";
+    });
+  }
+
+  return {
+    ...queryResult,
+    courseSessionDetail,
+    findAssignmentDetail,
+    findUser,
+    findCurrentUser,
+    filterMembers,
+  };
+}
diff --git a/client/src/gql/schema.graphql b/client/src/gql/schema.graphql
index a36eb1e9..26b0a601 100644
--- a/client/src/gql/schema.graphql
+++ b/client/src/gql/schema.graphql
@@ -8,11 +8,12 @@ type Query {
   learning_content_learning_module: LearningContentLearningModuleObjectType
   learning_content_placeholder: LearningContentPlaceholderObjectType
   learning_content_rich_text: LearningContentRichTextObjectType
-  learning_content_test: LearningContentTestObjectType
+  learning_content_test: LearningContentEdoniqTestObjectType
   learning_content_video: LearningContentVideoObjectType
   learning_content_document_list: LearningContentDocumentListObjectType
-  course_session_attendance_course(id: ID!, assignment_user_id: ID): CourseSessionAttendanceCourseType
-  course(id: Int): CourseObjectType
+  course_session_attendance_course(id: ID!, assignment_user_id: ID): CourseSessionAttendanceCourseObjectType
+  course(id: ID): CourseObjectType
+  course_session(id: ID): CourseSessionObjectType
   competence_certificate(id: ID, slug: String): CompetenceCertificateObjectType
   competence_certificate_list(id: ID, slug: String, course_id: ID, course_slug: String): CompetenceCertificateListObjectType
   assignment(id: ID, slug: String): AssignmentObjectType
@@ -307,12 +308,155 @@ type AssignmentCompletionObjectType {
   edoniq_extended_time_flag: Boolean!
   assignment_user: UserType!
   assignment: AssignmentObjectType!
+  course_session: CourseSessionObjectType!
   completion_status: AssignmentAssignmentCompletionCompletionStatusChoices!
   completion_data: GenericScalar
   additional_json_data: JSONString!
   learning_content_page_id: ID
 }
 
+type CourseSessionObjectType {
+  id: ID!
+  created_at: DateTime!
+  updated_at: DateTime!
+  course: CourseObjectType!
+  title: String!
+  start_date: Date
+  end_date: Date
+  attendance_courses: [CourseSessionAttendanceCourseObjectType]
+  assignments: [CourseSessionAssignmentObjectType]
+  edoniq_tests: [CourseSessionEdoniqTestObjectType]
+  users: [CourseSessionUserObjectsType]
+}
+
+"""
+The `Date` scalar type represents a Date
+value as specified by
+[iso8601](https://en.wikipedia.org/wiki/ISO_8601).
+"""
+scalar Date
+
+type CourseSessionAttendanceCourseObjectType {
+  id: ID!
+  learning_content: LearningContentAttendanceCourseObjectType
+  due_date: DueDateObjectType
+  location: String!
+  trainer: String!
+  course_session_id: ID
+  learning_content_id: ID
+  attendance_user_list: [AttendanceUserObjectType]
+}
+
+type LearningContentAttendanceCourseObjectType implements LearningContentInterface {
+  id: ID
+  title: String
+  slug: String
+  content_type: String
+  live: Boolean
+  translation_key: String
+  frontend_url: String
+  circle: CircleObjectType
+  course: CourseObjectType
+  minutes: Int
+  description: String
+  content: String
+}
+
+type DueDateObjectType {
+  id: ID!
+
+  """Startdatum ist Pflicht"""
+  start: DateTime
+
+  """Enddatum ist optional"""
+  end: DateTime
+
+  """Nur aktivieren, wenn man die Felder manuell überschreiben will"""
+  manual_override_fields: Boolean!
+
+  """Title wird standarmässig vom LearningContent übernommen"""
+  title: String!
+
+  """Translation Key aus dem Frontend"""
+  assignment_type_translation_key: String!
+
+  """Translation Key aus dem Frontend"""
+  date_type_translation_key: String!
+
+  """
+  Überschreibt den Untertitel bei `assignment_type_translation_key` und `date_type_translation_key`
+  """
+  subtitle: String!
+
+  """URL wird vom LearningContent übernommen"""
+  url: String!
+  course_session: CourseSessionObjectType!
+}
+
+type AttendanceUserObjectType {
+  user_id: UUID!
+  status: AttendanceUserStatus!
+  first_name: String
+  last_name: String
+  email: String
+}
+
+"""An enumeration."""
+enum AttendanceUserStatus {
+  PRESENT
+  ABSENT
+}
+
+type CourseSessionAssignmentObjectType {
+  id: ID!
+  learning_content: LearningContentAssignmentObjectType
+  submission_deadline: DueDateObjectType
+  evaluation_deadline: DueDateObjectType
+  course_session_id: ID
+  learning_content_id: ID
+}
+
+type CourseSessionEdoniqTestObjectType {
+  id: ID!
+  learning_content: LearningContentEdoniqTestObjectType
+  course_session_id: ID
+  learning_content_id: ID
+  deadline: DueDateObjectType
+}
+
+type LearningContentEdoniqTestObjectType implements LearningContentInterface {
+  content_assignment: AssignmentObjectType
+  id: ID
+  title: String
+  slug: String
+  content_type: String
+  live: Boolean
+  translation_key: String
+  frontend_url: String
+  circle: CircleObjectType
+  course: CourseObjectType
+  minutes: Int
+  description: String
+  content: String
+}
+
+type CourseSessionUserObjectsType {
+  id: UUID!
+  role: String
+  user_id: UUID
+  first_name: String
+  last_name: String
+  email: String
+  avatar_url: String
+  circles: [CourseSessionUserExpertCircleType]
+}
+
+type CourseSessionUserExpertCircleType {
+  id: ID
+  title: String
+  slug: String
+}
+
 """An enumeration."""
 enum AssignmentAssignmentCompletionCompletionStatusChoices {
   """IN_PROGRESS"""
@@ -361,21 +505,6 @@ enum LearnpathLearningContentAssignmentAssignmentTypeChoices {
   EDONIQ_TEST
 }
 
-type LearningContentAttendanceCourseObjectType implements LearningContentInterface {
-  id: ID
-  title: String
-  slug: String
-  content_type: String
-  live: Boolean
-  translation_key: String
-  frontend_url: String
-  circle: CircleObjectType
-  course: CourseObjectType
-  minutes: Int
-  description: String
-  content: String
-}
-
 type LearningContentFeedbackObjectType implements LearningContentInterface {
   id: ID
   title: String
@@ -436,22 +565,6 @@ type LearningContentRichTextObjectType implements LearningContentInterface {
   content: String
 }
 
-type LearningContentTestObjectType implements LearningContentInterface {
-  content_assignment: AssignmentObjectType
-  id: ID
-  title: String
-  slug: String
-  content_type: String
-  live: Boolean
-  translation_key: String
-  frontend_url: String
-  circle: CircleObjectType
-  course: CourseObjectType
-  minutes: Int
-  description: String
-  content: String
-}
-
 type LearningContentVideoObjectType implements LearningContentInterface {
   id: ID
   title: String
@@ -482,32 +595,6 @@ type LearningContentDocumentListObjectType implements LearningContentInterface {
   content: String
 }
 
-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]
-}
-
-type AttendanceUserType {
-  user_id: UUID!
-  status: AttendanceUserStatus!
-  first_name: String
-  last_name: String
-  email: String
-}
-
-"""An enumeration."""
-enum AttendanceUserStatus {
-  PRESENT
-  ABSENT
-}
-
 type CompetenceCertificateListObjectType implements CoursePageInterface {
   id: ID
   path: String!
@@ -577,7 +664,7 @@ type ErrorType {
 }
 
 type AttendanceCourseUserMutation {
-  course_session_attendance_course: CourseSessionAttendanceCourseType
+  course_session_attendance_course: CourseSessionAttendanceCourseObjectType
 }
 
 input AttendanceUserInputType {
diff --git a/client/src/gql/typenames.ts b/client/src/gql/typenames.ts
index 66b3076f..af5502a0 100644
--- a/client/src/gql/typenames.ts
+++ b/client/src/gql/typenames.ts
@@ -6,8 +6,8 @@ export const AssignmentCompletionStatus = "AssignmentCompletionStatus";
 export const AssignmentObjectType = "AssignmentObjectType";
 export const AttendanceCourseUserMutation = "AttendanceCourseUserMutation";
 export const AttendanceUserInputType = "AttendanceUserInputType";
+export const AttendanceUserObjectType = "AttendanceUserObjectType";
 export const AttendanceUserStatus = "AttendanceUserStatus";
-export const AttendanceUserType = "AttendanceUserType";
 export const Boolean = "Boolean";
 export const CircleObjectType = "CircleObjectType";
 export const CompetenceCertificateListObjectType = "CompetenceCertificateListObjectType";
@@ -15,8 +15,15 @@ export const CompetenceCertificateObjectType = "CompetenceCertificateObjectType"
 export const CoreUserLanguageChoices = "CoreUserLanguageChoices";
 export const CourseObjectType = "CourseObjectType";
 export const CoursePageInterface = "CoursePageInterface";
-export const CourseSessionAttendanceCourseType = "CourseSessionAttendanceCourseType";
+export const CourseSessionAssignmentObjectType = "CourseSessionAssignmentObjectType";
+export const CourseSessionAttendanceCourseObjectType = "CourseSessionAttendanceCourseObjectType";
+export const CourseSessionEdoniqTestObjectType = "CourseSessionEdoniqTestObjectType";
+export const CourseSessionObjectType = "CourseSessionObjectType";
+export const CourseSessionUserExpertCircleType = "CourseSessionUserExpertCircleType";
+export const CourseSessionUserObjectsType = "CourseSessionUserObjectsType";
+export const Date = "Date";
 export const DateTime = "DateTime";
+export const DueDateObjectType = "DueDateObjectType";
 export const ErrorType = "ErrorType";
 export const FeedbackResponseObjectType = "FeedbackResponseObjectType";
 export const Float = "Float";
@@ -28,13 +35,13 @@ export const JSONString = "JSONString";
 export const LearningContentAssignmentObjectType = "LearningContentAssignmentObjectType";
 export const LearningContentAttendanceCourseObjectType = "LearningContentAttendanceCourseObjectType";
 export const LearningContentDocumentListObjectType = "LearningContentDocumentListObjectType";
+export const LearningContentEdoniqTestObjectType = "LearningContentEdoniqTestObjectType";
 export const LearningContentFeedbackObjectType = "LearningContentFeedbackObjectType";
 export const LearningContentInterface = "LearningContentInterface";
 export const LearningContentLearningModuleObjectType = "LearningContentLearningModuleObjectType";
 export const LearningContentMediaLibraryObjectType = "LearningContentMediaLibraryObjectType";
 export const LearningContentPlaceholderObjectType = "LearningContentPlaceholderObjectType";
 export const LearningContentRichTextObjectType = "LearningContentRichTextObjectType";
-export const LearningContentTestObjectType = "LearningContentTestObjectType";
 export const LearningContentVideoObjectType = "LearningContentVideoObjectType";
 export const LearningPathObjectType = "LearningPathObjectType";
 export const LearningSequenceObjectType = "LearningSequenceObjectType";
diff --git a/client/src/graphql/client.ts b/client/src/graphql/client.ts
index 926e0052..67c2f5fb 100644
--- a/client/src/graphql/client.ts
+++ b/client/src/graphql/client.ts
@@ -14,7 +14,7 @@ export const graphqlClient = new Client({
     cacheExchange({
       schema: schema,
       keys: {
-        AttendanceUserType: (data) => data?.user_id?.toString() ?? null,
+        AttendanceUserObjectType: (data) => data?.user_id?.toString() ?? null,
       },
       updates: {
         Mutation: {
diff --git a/client/src/graphql/queries.ts b/client/src/graphql/queries.ts
index f9c420ce..877584de 100644
--- a/client/src/graphql/queries.ts
+++ b/client/src/graphql/queries.ts
@@ -76,7 +76,7 @@ export const ASSIGNMENT_COMPLETION_QUERY = graphql(`
 `);
 
 export const COURSE_QUERY = graphql(`
-  query courseQuery($courseId: Int!) {
+  query courseQuery($courseId: ID!) {
     course(id: $courseId) {
       id
       slug
@@ -122,3 +122,76 @@ export const COMPETENCE_NAVI_CERTIFICATE_QUERY = graphql(`
     }
   }
 `);
+
+export const COURSE_SESSION_DETAIL_QUERY = graphql(`
+  query courseSessionDetail($courseSessionId: ID!) {
+    course_session(id: $courseSessionId) {
+      id
+      title
+      course {
+        id
+        title
+      }
+      users {
+        id
+        user_id
+        first_name
+        last_name
+        email
+        avatar_url
+        role
+        circles {
+          id
+          title
+          slug
+        }
+      }
+      attendance_courses {
+        id
+        location
+        trainer
+        due_date {
+          id
+          start
+          end
+        }
+        learning_content_id
+        learning_content {
+          id
+          title
+        }
+      }
+      assignments {
+        id
+        submission_deadline {
+          id
+          start
+        }
+        evaluation_deadline {
+          id
+          start
+        }
+        learning_content {
+          id
+          content_assignment {
+            id
+            title
+            assignment_type
+          }
+        }
+      }
+      edoniq_tests {
+        id
+        deadline {
+          id
+          start
+          end
+        }
+        learning_content {
+          id
+          title
+        }
+      }
+    }
+  }
+`);
diff --git a/client/src/pages/DashboardPage.vue b/client/src/pages/DashboardPage.vue
index f543f45a..ac0dcbcc 100644
--- a/client/src/pages/DashboardPage.vue
+++ b/client/src/pages/DashboardPage.vue
@@ -6,6 +6,7 @@ import { useUserStore } from "@/stores/user";
 import type { CourseSession } from "@/types";
 import log from "loglevel";
 import { computed, onMounted } from "vue";
+import { getLearningPathUrl } from "@/utils/utils";
 
 log.debug("DashboardPage created");
 
@@ -20,9 +21,9 @@ const allDueDates = courseSessionsStore.allDueDates();
 const getNextStepLink = (courseSession: CourseSession) => {
   return computed(() => {
     if (courseSessionsStore.hasCockpit(courseSession)) {
-      return courseSession.cockpit_url;
+      return `${courseSession.course_url}/cockpit`;
     }
-    return courseSession.learning_path_url;
+    return getLearningPathUrl(courseSession);
   });
 };
 </script>
diff --git a/client/src/pages/TestCourseSessionComposablePage.vue b/client/src/pages/TestCourseSessionComposablePage.vue
new file mode 100644
index 00000000..689ab876
--- /dev/null
+++ b/client/src/pages/TestCourseSessionComposablePage.vue
@@ -0,0 +1,22 @@
+<script setup lang="ts">
+import * as log from "loglevel";
+import { onMounted } from "vue";
+import { useCourseSessionDetailQuery } from "@/composables";
+
+const props = defineProps<{
+  courseSlug: string;
+}>();
+
+onMounted(async () => {
+  log.debug("TestCourseSessionComposablePage mounted");
+});
+
+// const courseSession = useCurrentCourseSession();
+const queryResult = useCourseSessionDetailQuery("-1");
+</script>
+
+<template>
+  <h1>Hello World</h1>
+
+  <pre>{{ queryResult.courseSessionDetail }}</pre>
+</template>
diff --git a/client/src/pages/cockpit/CockpitParentPage.vue b/client/src/pages/cockpit/CockpitParentPage.vue
index a0f1663a..1e6c7f35 100644
--- a/client/src/pages/cockpit/CockpitParentPage.vue
+++ b/client/src/pages/cockpit/CockpitParentPage.vue
@@ -1,5 +1,5 @@
 <script setup lang="ts">
-import { useCurrentCourseSession } from "@/composables";
+import { useCourseSessionDetailQuery } from "@/composables";
 import { useCockpitStore } from "@/stores/cockpit";
 import { useCompetenceStore } from "@/stores/competence";
 import { useLearningPathStore } from "@/stores/learningPath";
@@ -16,13 +16,14 @@ const props = defineProps<{
 const cockpitStore = useCockpitStore();
 const competenceStore = useCompetenceStore();
 const learningPathStore = useLearningPathStore();
-const courseSession = useCurrentCourseSession();
+
+const courseSessionDetailResult = useCourseSessionDetailQuery();
 
 onMounted(async () => {
   log.debug("CockpitParentPage mounted", props.courseSlug);
 
   try {
-    const members = await cockpitStore.loadCourseSessionMembers(courseSession.value.id);
+    const members = courseSessionDetailResult.filterMembers();
     members.forEach((csu) => {
       competenceStore.loadCompetenceProfilePage(
         props.courseSlug + "-competencenavi-competences",
@@ -35,7 +36,10 @@ onMounted(async () => {
       props.courseSlug + "-lp",
       useUserStore().id
     );
-    await cockpitStore.loadCircles(props.courseSlug, courseSession.value.id);
+    await cockpitStore.loadCircles(
+      props.courseSlug,
+      courseSessionDetailResult.findCurrentUser()
+    );
   } catch (error) {
     log.error(error);
   }
diff --git a/client/src/pages/cockpit/CockpitUserCirclePage.vue b/client/src/pages/cockpit/CockpitUserCirclePage.vue
index 12d66b67..e7d2889f 100644
--- a/client/src/pages/cockpit/CockpitUserCirclePage.vue
+++ b/client/src/pages/cockpit/CockpitUserCirclePage.vue
@@ -1,8 +1,8 @@
 <script setup lang="ts">
 import CirclePage from "@/pages/learningPath/circlePage/CirclePage.vue";
-import { useCockpitStore } from "@/stores/cockpit";
 import * as log from "loglevel";
 import { computed, onMounted } from "vue";
+import { useCourseSessionDetailQuery } from "@/composables";
 
 const props = defineProps<{
   userId: string;
@@ -12,14 +12,14 @@ const props = defineProps<{
 
 log.debug("CockpitUserCirclePage created", props.userId, props.circleSlug);
 
-const cockpitStore = useCockpitStore();
-
 onMounted(async () => {
   log.debug("CockpitUserCirclePage mounted");
 });
 
+const { findUser } = useCourseSessionDetailQuery();
+
 const user = computed(() => {
-  return cockpitStore.courseSessionMembers?.find((csu) => csu.user_id === props.userId);
+  return findUser(props.userId);
 });
 </script>
 
diff --git a/client/src/pages/cockpit/CockpitUserProfilePage.vue b/client/src/pages/cockpit/CockpitUserProfilePage.vue
index d78609a6..c3c0c722 100644
--- a/client/src/pages/cockpit/CockpitUserProfilePage.vue
+++ b/client/src/pages/cockpit/CockpitUserProfilePage.vue
@@ -7,6 +7,7 @@ import { computed, onMounted } from "vue";
 
 import CompetenceDetail from "@/pages/competence/ActionCompetenceDetail.vue";
 import LearningPathPathView from "@/pages/learningPath/learningPathPage/LearningPathPathView.vue";
+import { useCourseSessionDetailQuery } from "@/composables";
 
 const props = defineProps<{
   userId: string;
@@ -27,8 +28,10 @@ const learningPath = computed(() => {
   return learningPathStore.learningPathForUser(props.courseSlug, props.userId);
 });
 
+const { findUser } = useCourseSessionDetailQuery();
+
 const user = computed(() => {
-  return cockpitStore.courseSessionMembers?.find((csu) => csu.user_id === props.userId);
+  return findUser(props.userId);
 });
 
 function setActiveClasses(isActive: boolean) {
diff --git a/client/src/pages/cockpit/assignmentEvaluationPage/AssignmentEvaluationPage.vue b/client/src/pages/cockpit/assignmentEvaluationPage/AssignmentEvaluationPage.vue
index 24422f6f..b201d057 100644
--- a/client/src/pages/cockpit/assignmentEvaluationPage/AssignmentEvaluationPage.vue
+++ b/client/src/pages/cockpit/assignmentEvaluationPage/AssignmentEvaluationPage.vue
@@ -1,20 +1,15 @@
 <script setup lang="ts">
-import { useCurrentCourseSession } from "@/composables";
+import { useCurrentCourseSession, useCourseSessionDetailQuery } from "@/composables";
 import { ASSIGNMENT_COMPLETION_QUERY } from "@/graphql/queries";
 import EvaluationContainer from "@/pages/cockpit/assignmentEvaluationPage/EvaluationContainer.vue";
 import AssignmentSubmissionResponses from "@/pages/learningPath/learningContentPage/assignment/AssignmentSubmissionResponses.vue";
-import type {
-  Assignment,
-  AssignmentCompletion,
-  CourseSessionAssignment,
-  CourseSessionUser,
-} from "@/types";
+import type { Assignment, AssignmentCompletion } from "@/types";
 import { useQuery } from "@urql/vue";
 import log from "loglevel";
-import { computed, onMounted, reactive } from "vue";
+import { computed, onMounted } from "vue";
 import { useRouter } from "vue-router";
 import { getPreviousRoute } from "@/router/history";
-import { getAssignmentTypeTitle } from "@/utils/utils";
+import { getAssignmentTypeTitle } from "../../../utils/utils";
 
 const props = defineProps<{
   courseSlug: string;
@@ -24,16 +19,6 @@ const props = defineProps<{
 
 log.debug("AssignmentEvaluationPage created", props.assignmentId, props.userId);
 
-interface StateInterface {
-  courseSessionAssignment: CourseSessionAssignment | undefined;
-  assignmentUser: CourseSessionUser | undefined;
-}
-
-const state: StateInterface = reactive({
-  courseSessionAssignment: undefined,
-  assignmentUser: undefined,
-});
-
 const courseSession = useCurrentCourseSession();
 const router = useRouter();
 
@@ -49,12 +34,11 @@ const queryResult = useQuery({
 
 onMounted(async () => {
   log.debug("AssignmentView mounted", props.assignmentId, props.userId);
-
-  state.assignmentUser = courseSession.value.users.find(
-    (user) => user.user_id === props.userId
-  );
 });
 
+const courseSessionDetailResult = useCourseSessionDetailQuery();
+const assignmentUser = computed(() => courseSessionDetailResult.findUser(props.userId));
+
 const previousRoute = getPreviousRoute();
 
 function close() {
@@ -103,10 +87,7 @@ const assignment = computed(
           <it-icon-close></it-icon-close>
         </button>
       </header>
-      <div
-        v-if="assignment && assignmentCompletion && state.assignmentUser"
-        class="relative"
-      >
+      <div v-if="assignment && assignmentCompletion && assignmentUser" class="relative">
         <div class="md:h-content flex flex-col md:flex-row">
           <div
             class="bg-white md:h-full md:overflow-y-auto"
@@ -118,12 +99,12 @@ const assignment = computed(
 
               <div class="my-6 flex items-center">
                 <img
-                  :src="state.assignmentUser?.avatar_url"
+                  :src="assignmentUser?.avatar_url"
                   class="mr-4 h-11 w-11 rounded-full"
                 />
                 <div class="font-bold">
-                  {{ state.assignmentUser?.first_name }}
-                  {{ state.assignmentUser?.last_name }}
+                  {{ assignmentUser?.first_name }}
+                  {{ assignmentUser?.last_name }}
                 </div>
               </div>
               <AssignmentSubmissionResponses
@@ -139,7 +120,7 @@ const assignment = computed(
           >
             <EvaluationContainer
               :assignment-completion="assignmentCompletion"
-              :assignment-user="state.assignmentUser"
+              :assignment-user="assignmentUser"
               :assignment="assignment"
               @close="close()"
             ></EvaluationContainer>
diff --git a/client/src/pages/cockpit/assignmentEvaluationPage/EvaluationContainer.vue b/client/src/pages/cockpit/assignmentEvaluationPage/EvaluationContainer.vue
index 916fb7a9..a68856c1 100644
--- a/client/src/pages/cockpit/assignmentEvaluationPage/EvaluationContainer.vue
+++ b/client/src/pages/cockpit/assignmentEvaluationPage/EvaluationContainer.vue
@@ -2,7 +2,6 @@
 import EvaluationIntro from "@/pages/cockpit/assignmentEvaluationPage/EvaluationIntro.vue";
 import EvaluationSummary from "@/pages/cockpit/assignmentEvaluationPage/EvaluationSummary.vue";
 import EvaluationTask from "@/pages/cockpit/assignmentEvaluationPage/EvaluationTask.vue";
-import { findAssignmentDetail } from "@/services/assignmentService";
 import type {
   Assignment,
   AssignmentCompletion,
@@ -14,6 +13,7 @@ import dayjs from "dayjs";
 import { findIndex } from "lodash";
 import * as log from "loglevel";
 import { computed, onMounted } from "vue";
+import { useCourseSessionDetailQuery } from "@/composables";
 
 const props = defineProps<{
   assignmentUser: CourseSessionUser;
@@ -58,10 +58,14 @@ function editTask(task: AssignmentEvaluationTask) {
   stepIndex.value = taskIndex + 1;
 }
 
-const assignmentDetail = computed(() => findAssignmentDetail(props.assignment.id));
+const courseSessionDetailResult = useCourseSessionDetailQuery();
+
+const assignmentDetail = computed(() => {
+  return courseSessionDetailResult.findAssignmentDetail(props.assignment.id.toString());
+});
 
 const dueDate = computed(() =>
-  dayjs(assignmentDetail.value?.evaluation_deadline_start)
+  dayjs(assignmentDetail.value?.evaluation_deadline.start)
 );
 
 const inEvaluationTask = computed(
diff --git a/client/src/pages/cockpit/assignmentEvaluationPage/EvaluationSummary.vue b/client/src/pages/cockpit/assignmentEvaluationPage/EvaluationSummary.vue
index ce53b692..6fbfcdf1 100644
--- a/client/src/pages/cockpit/assignmentEvaluationPage/EvaluationSummary.vue
+++ b/client/src/pages/cockpit/assignmentEvaluationPage/EvaluationSummary.vue
@@ -1,6 +1,6 @@
 <script setup lang="ts">
 import ItSuccessAlert from "@/components/ui/ItSuccessAlert.vue";
-import { useCurrentCourseSession } from "@/composables";
+import { useCourseSessionDetailQuery, useCurrentCourseSession } from "@/composables";
 import { UPSERT_ASSIGNMENT_COMPLETION_MUTATION } from "@/graphql/mutations";
 import {
   maxAssignmentPoints,
@@ -77,13 +77,13 @@ const userPoints = computed(() =>
   userAssignmentPoints(props.assignment, props.assignmentCompletion)
 );
 
+const courseSessionDetailResult = useCourseSessionDetailQuery();
 const evaluationUser = computed(() => {
   if (props.assignmentCompletion.evaluation_user) {
-    return (courseSession.value.users ?? []).find(
-      (user) => user.user_id === props.assignmentCompletion.evaluation_user
-    ) as CourseSessionUser;
+    return courseSessionDetailResult.findUser(
+      props.assignmentCompletion.evaluation_user
+    );
   }
-
   return undefined;
 });
 </script>
diff --git a/client/src/pages/cockpit/assignmentsPage/AssignmentDetails.vue b/client/src/pages/cockpit/assignmentsPage/AssignmentDetails.vue
index bd3d1b74..fe403021 100644
--- a/client/src/pages/cockpit/assignmentsPage/AssignmentDetails.vue
+++ b/client/src/pages/cockpit/assignmentsPage/AssignmentDetails.vue
@@ -2,20 +2,17 @@
 import ItPersonRow from "@/components/ui/ItPersonRow.vue";
 import type { StatusCount } from "@/components/ui/ItProgress.vue";
 import type { GradedUser } from "@/services/assignmentService";
-import {
-  findAssignmentDetail,
-  loadAssignmentCompletionStatusData,
-} from "@/services/assignmentService";
-import { useCockpitStore } from "@/stores/cockpit";
+import { loadAssignmentCompletionStatusData } from "@/services/assignmentService";
 import type {
   CourseSession,
   CourseSessionUser,
   LearningContentAssignment,
 } from "@/types";
-import dayjs from "dayjs";
 import log from "loglevel";
 import { computed, onMounted, reactive } from "vue";
 import AssignmentSubmissionProgress from "@/pages/cockpit/cockpitPage/AssignmentSubmissionProgress.vue";
+import { useCourseSessionDetailQuery } from "@/composables";
+import { formatDueDate } from "../../../components/dueDates/dueDatesUtils";
 
 const props = defineProps<{
   courseSession: CourseSession;
@@ -27,7 +24,7 @@ log.debug(
   props.learningContentAssignment.content_assignment_id
 );
 
-const cockpitStore = useCockpitStore();
+const courseSessionDetailResult = useCourseSessionDetailQuery();
 
 const state = reactive({
   progressStatusCount: {} as StatusCount,
@@ -35,6 +32,12 @@ const state = reactive({
   assignmentSubmittedUsers: [] as CourseSessionUser[],
 });
 
+const assignmentDetail = computed(() => {
+  return courseSessionDetailResult.findAssignmentDetail(
+    props.learningContentAssignment.content_assignment_id.toString()
+  );
+});
+
 onMounted(async () => {
   const { gradedUsers, assignmentSubmittedUsers } =
     await loadAssignmentCompletionStatusData(
@@ -45,10 +48,6 @@ onMounted(async () => {
   state.gradedUsers = gradedUsers;
   state.assignmentSubmittedUsers = assignmentSubmittedUsers;
 });
-
-const assignmentDetail = computed(() =>
-  findAssignmentDetail(props.learningContentAssignment.content_assignment_id)
-);
 </script>
 
 <template>
@@ -62,14 +61,12 @@ const assignmentDetail = computed(() =>
     <div v-if="assignmentDetail">
       <span>
         {{ $t("Abgabetermin Ergebnisse:") }}
-        {{ dayjs(assignmentDetail.submission_deadline_start).format("DD.MM.YYYY") }}
+        {{ formatDueDate(assignmentDetail.submission_deadline.start) }}
       </span>
-      <template v-if="assignmentDetail.evaluation_deadline_start">
+      <template v-if="assignmentDetail.evaluation_deadline.start">
         <br />
-        <span v-if="assignmentDetail.evaluation_deadline_start">
-          {{ $t("Freigabetermin Bewertungen:") }}
-          {{ dayjs(assignmentDetail.evaluation_deadline_start).format("DD.MM.YYYY") }}
-        </span>
+        {{ $t("Freigabetermin Bewertungen:") }}
+        {{ formatDueDate(assignmentDetail.evaluation_deadline.start) }}
       </template>
     </div>
     <div v-else>
@@ -85,11 +82,11 @@ const assignmentDetail = computed(() =>
       />
     </div>
 
-    <div v-if="cockpitStore.courseSessionMembers?.length" class="mt-6">
+    <div v-if="courseSessionDetailResult.filterMembers().length" class="mt-6">
       <ul>
         <ItPersonRow
-          v-for="csu in cockpitStore.courseSessionMembers"
-          :key="csu.user_id + csu.session_title"
+          v-for="csu in courseSessionDetailResult.filterMembers()"
+          :key="csu.user_id"
           :name="`${csu.first_name} ${csu.last_name}`"
           :avatar-url="csu.avatar_url"
           :data-cy="csu.last_name"
diff --git a/client/src/pages/cockpit/attendanceCheckPage/AttendanceCheckPage.vue b/client/src/pages/cockpit/attendanceCheckPage/AttendanceCheckPage.vue
index 852b8be9..b6ca64c5 100644
--- a/client/src/pages/cockpit/attendanceCheckPage/AttendanceCheckPage.vue
+++ b/client/src/pages/cockpit/attendanceCheckPage/AttendanceCheckPage.vue
@@ -2,10 +2,9 @@
 import ItCheckbox from "@/components/ui/ItCheckbox.vue";
 import ItDropdownSelect from "@/components/ui/ItDropdownSelect.vue";
 import ItPersonRow from "@/components/ui/ItPersonRow.vue";
-import { useCurrentCourseSession } from "@/composables";
+import { useCourseSessionDetailQuery, useCurrentCourseSession } from "@/composables";
 import type { AttendanceUserStatus } from "@/gql/graphql";
 import { ATTENDANCE_CHECK_MUTATION } from "@/graphql/mutations";
-import { useCockpitStore } from "@/stores/cockpit";
 import type { DropdownSelectable } from "@/types";
 import { useMutation } from "@urql/vue";
 import dayjs from "dayjs";
@@ -16,9 +15,9 @@ import { ATTENDANCE_CHECK_QUERY } from "@/graphql/queries";
 import { graphqlClient } from "@/graphql/client";
 
 const { t } = useTranslation();
-const cockpitStore = useCockpitStore();
 const courseSession = useCurrentCourseSession();
 const attendanceMutation = useMutation(ATTENDANCE_CHECK_MUTATION);
+const courseSessionDetailResult = useCourseSessionDetailQuery();
 
 const attendanceCourses = computed(() => {
   return courseSession.value.attendance_courses;
@@ -167,8 +166,8 @@ watch(
 
       <div class="mt-4 flex flex-col bg-white p-6">
         <div
-          v-for="(csu, index) in cockpitStore.courseSessionMembers"
-          :key="csu.user_id + csu.session_title"
+          v-for="(csu, index) in courseSessionDetailResult.filterMembers()"
+          :key="csu.user_id"
         >
           <ItPersonRow
             :name="`${csu.first_name} ${csu.last_name}`"
diff --git a/client/src/pages/cockpit/cockpitPage/CockpitPage.vue b/client/src/pages/cockpit/cockpitPage/CockpitPage.vue
index 99c0668b..55202c7c 100644
--- a/client/src/pages/cockpit/cockpitPage/CockpitPage.vue
+++ b/client/src/pages/cockpit/cockpitPage/CockpitPage.vue
@@ -3,7 +3,7 @@ import LearningPathDiagram from "@/components/learningPath/LearningPathDiagram.v
 import ItPersonRow from "@/components/ui/ItPersonRow.vue";
 import type { LearningPath } from "@/services/learningPath";
 
-import { useCurrentCourseSession } from "@/composables";
+import { useCurrentCourseSession, useCourseSessionDetailQuery } from "@/composables";
 import SubmissionsOverview from "@/pages/cockpit/cockpitPage/SubmissionsOverview.vue";
 import { useCockpitStore } from "@/stores/cockpit";
 import { useCompetenceStore } from "@/stores/competence";
@@ -24,6 +24,7 @@ const competenceStore = useCompetenceStore();
 const learningPathStore = useLearningPathStore();
 const courseSession = useCurrentCourseSession();
 const courseSessionsStore = useCourseSessionsStore();
+const courseSessionDetailResult = useCourseSessionDetailQuery();
 
 function userCountStatusForCircle(userId: string) {
   if (!cockpitStore.currentCircle) return { FAIL: 0, SUCCESS: 0, UNKNOWN: 0 };
@@ -126,12 +127,15 @@ function userCountStatusForCircle(userId: string) {
       ></SubmissionsOverview>
       <div class="pt-4">
         <!-- progress -->
-        <div v-if="cockpitStore.courseSessionMembers" class="bg-white p-6">
+        <div
+            v-if="courseSessionDetailResult.filterMembers().length > 0"
+            class="bg-white p-6"
+          >
           <h1 class="heading-3 mb-5">{{ $t("cockpit.progress") }}</h1>
           <ul>
             <ItPersonRow
-              v-for="csu in cockpitStore.courseSessionMembers"
-              :key="csu.user_id + csu.session_title"
+              v-for="csu in courseSessionDetailResult.filterMembers()"
+              :key="csu.user_id"
               :name="`${csu.first_name} ${csu.last_name}`"
               :avatar-url="csu.avatar_url"
             >
diff --git a/client/src/pages/cockpit/cockpitPage/FeedbackSubmissionProgress.vue b/client/src/pages/cockpit/cockpitPage/FeedbackSubmissionProgress.vue
index 78c16ff7..b39dfe49 100644
--- a/client/src/pages/cockpit/cockpitPage/FeedbackSubmissionProgress.vue
+++ b/client/src/pages/cockpit/cockpitPage/FeedbackSubmissionProgress.vue
@@ -4,7 +4,7 @@ import log from "loglevel";
 import { computed, onMounted, ref } from "vue";
 import ItProgress from "@/components/ui/ItProgress.vue";
 import { itGet } from "@/fetchHelpers";
-import { useCockpitStore } from "@/stores/cockpit";
+import { useCourseSessionDetailQuery } from "@/composables";
 
 const props = defineProps<{
   courseSession: CourseSession;
@@ -13,12 +13,11 @@ const props = defineProps<{
 
 log.debug("FeedbackSubmissionProgress created");
 
-const cockpitStore = useCockpitStore();
-
+const courseSessionDetailResult = useCourseSessionDetailQuery();
 const completeFeedbacks = ref(0);
 
 const numFeedbacks = computed(() => {
-  return cockpitStore.courseSessionMembers?.length ?? 0;
+  return courseSessionDetailResult.filterMembers().length;
 });
 
 onMounted(async () => {
diff --git a/client/src/pages/cockpit/cockpitPage/SubmissionsOverview.vue b/client/src/pages/cockpit/cockpitPage/SubmissionsOverview.vue
index e323cf10..9e8eabed 100644
--- a/client/src/pages/cockpit/cockpitPage/SubmissionsOverview.vue
+++ b/client/src/pages/cockpit/cockpitPage/SubmissionsOverview.vue
@@ -1,7 +1,6 @@
 2
 <script setup lang="ts">
 import AssignmentSubmissionProgress from "@/pages/cockpit/cockpitPage/AssignmentSubmissionProgress.vue";
-import { useCockpitStore } from "@/stores/cockpit";
 import { useLearningPathStore } from "@/stores/learningPath";
 import { useUserStore } from "@/stores/user";
 import type {
@@ -14,6 +13,7 @@ import { computed } from "vue";
 import { useTranslation } from "i18next-vue";
 import FeedbackSubmissionProgress from "@/pages/cockpit/cockpitPage/FeedbackSubmissionProgress.vue";
 import { learningContentTypeData } from "@/utils/typeMaps";
+import { useCourseSessionDetailQuery } from "@/composables";
 
 interface Submittable {
   id: number;
@@ -33,8 +33,9 @@ const props = defineProps<{
 log.debug("SubmissionsOverview created", props.courseSession.id);
 
 const userStore = useUserStore();
-const cockpitStore = useCockpitStore();
 const learningPathStore = useLearningPathStore();
+const courseSessionDetailResult = useCourseSessionDetailQuery();
+
 const { t } = useTranslation();
 
 const submittables = computed(() => {
@@ -128,7 +129,10 @@ const getIconName = (lc: LearningContent) => {
 
 <template>
   <div class="bg-white px-6 py-2">
-    <div v-if="cockpitStore.courseSessionMembers" class="divide-y divide-gray-500">
+    <div
+      v-if="courseSessionDetailResult.filterMembers().length"
+      class="divide-y divide-gray-500"
+    >
       <div
         v-for="submittable in submittables"
         :key="submittable.id"
diff --git a/client/src/router/index.ts b/client/src/router/index.ts
index 805a1e9c..0aac3682 100644
--- a/client/src/router/index.ts
+++ b/client/src/router/index.ts
@@ -98,6 +98,11 @@ const router = createRouter({
         },
       ],
     },
+    {
+      path: "/course/:courseSlug/test-composable",
+      component: () => import("../pages/TestCourseSessionComposablePage.vue"),
+      props: true,
+    },
     {
       path: "/course/:courseSlug/learn",
       component: () =>
diff --git a/client/src/services/assignmentService.ts b/client/src/services/assignmentService.ts
index dc6bb4da..2da28988 100644
--- a/client/src/services/assignmentService.ts
+++ b/client/src/services/assignmentService.ts
@@ -1,9 +1,6 @@
+import { useCourseSessionDetailQuery } from "@/composables";
 import { itGet } from "@/fetchHelpers";
 import type { LearningPath } from "@/services/learningPath";
-import { useCockpitStore } from "@/stores/cockpit";
-import { useCourseSessionsStore } from "@/stores/courseSessions";
-import { useLearningPathStore } from "@/stores/learningPath";
-import { useUserStore } from "@/stores/user";
 import type {
   Assignment,
   AssignmentCompletion,
@@ -35,19 +32,17 @@ export async function loadAssignmentCompletionStatusData(
   courseSessionId: number,
   learningContentId: number
 ) {
-  const cockpitStore = useCockpitStore();
+  const courseSessionDetailResult = useCourseSessionDetailQuery();
 
   const assignmentCompletionData = (await itGet(
     `/api/assignment/${assignmentId}/${courseSessionId}/status/`
   )) as UserAssignmentCompletionStatus[];
 
-  const courseSessionUsers = await cockpitStore.loadCourseSessionMembers(
-    courseSessionId
-  );
+  const members = courseSessionDetailResult.filterMembers();
 
   const gradedUsers: GradedUser[] = [];
   const assignmentSubmittedUsers: CourseSessionUser[] = [];
-  for (const csu of courseSessionUsers) {
+  for (const csu of members) {
     const userAssignmentStatus = assignmentCompletionData.find(
       (s) =>
         s.assignment_user_id === csu.user_id &&
@@ -70,34 +65,10 @@ export async function loadAssignmentCompletionStatusData(
   return {
     assignmentSubmittedUsers: assignmentSubmittedUsers,
     gradedUsers: gradedUsers,
-    total: courseSessionUsers.length,
+    total: members.length,
   };
 }
 
-export function findAssignmentDetail(assignmentId: number) {
-  const learningPathStore = useLearningPathStore();
-  const userStore = useUserStore();
-  const courseSessionsStore = useCourseSessionsStore();
-
-  // TODO: filter by selected circle
-  if (!courseSessionsStore.currentCourseSession) {
-    return undefined;
-  }
-
-  const learningContents = calcLearningContentAssignments(
-    learningPathStore.learningPathForUser(
-      courseSessionsStore.currentCourseSession.course.slug,
-      userStore.id
-    )
-  );
-
-  const learningContent = learningContents.find(
-    (lc) => lc.content_assignment_id === assignmentId
-  );
-
-  return courseSessionsStore.findCourseSessionAssignment(learningContent?.id);
-}
-
 export function maxAssignmentPoints(assignment: Assignment) {
   return sum(assignment.evaluation_tasks.map((task) => task.value.max_points));
 }
diff --git a/client/src/stores/cockpit.ts b/client/src/stores/cockpit.ts
index a1f72db0..ed0bd3c4 100644
--- a/client/src/stores/cockpit.ts
+++ b/client/src/stores/cockpit.ts
@@ -5,6 +5,8 @@ import log from "loglevel";
 import { useCircleStore } from "@/stores/circle";
 import { useLearningPathStore } from "@/stores/learningPath";
 import { useUserStore } from "@/stores/user";
+import type { CourseSessionUser, ExpertSessionUser } from "@/types";
+import log from "loglevel";
 import { defineStore } from "pinia";
 
 export type CockpitStoreState = {
@@ -26,13 +28,16 @@ export const useCockpitStore = defineStore({
     } as CockpitStoreState;
   },
   actions: {
-    async loadCircles(courseSlug: string, courseSessionId: number) {
+    async loadCircles(
+      courseSlug: string,
+      currentCourseSessionUser: CourseSessionUser | undefined
+    ) {
       log.debug("loadCircles called", courseSlug, courseSessionId);
       this.currentCourseSlug = courseSlug;
 
-      const f = await courseCircles(this.currentCourseSlug, courseSessionId);
+      const circles = await courseCircles(this.currentCourseSlug, currentCourseSessionUser);
 
-      this.circles = f.map((c) => {
+      this.circles = circles.map((c) => {
         return {
           id: c.slug,
           name: c.title,
@@ -53,18 +58,6 @@ export const useCockpitStore = defineStore({
     async setCurrentCourseCircleFromEvent(event: { id: string }) {
       await this.setCurrentCourseCircle(event.id);
     },
-    async loadCourseSessionMembers(courseSessionId: number, reload = false) {
-      log.debug("loadCourseSessionMembers called");
-      const users = (await itGetCached(
-        `/api/course/sessions/${courseSessionId}/users/`,
-        {
-          reload: reload,
-        }
-      )) as CourseSessionUser[];
-
-      this.courseSessionMembers = users.filter((user) => user.role === "MEMBER");
-      return this.courseSessionMembers;
-    },
   },
   getters: {
     currentCircle: () => {
@@ -81,18 +74,15 @@ export const useCockpitStore = defineStore({
   },
 });
 
-async function courseCircles(courseSlug: string, courseSessionId: number) {
+async function courseCircles(
+  courseSlug: string,
+  currentCourseSessionUser: CourseSessionUser | undefined
+) {
   const userStore = useUserStore();
   const userId = userStore.id;
 
-  const users = (await itGetCached(`/api/course/sessions/${courseSessionId}/users/`, {
-    reload: false,
-  })) as CourseSessionUser[];
-
-  // First check if current user is an expert for this course session
-  const currentUser = users.find((user) => user.user_id === userId);
-  if (currentUser && currentUser.role === "EXPERT") {
-    const expert = currentUser as ExpertSessionUser;
+  if (currentCourseSessionUser && currentCourseSessionUser.role === "EXPERT") {
+    const expert = currentCourseSessionUser as ExpertSessionUser;
     return expert.circles;
   }
 
diff --git a/client/src/stores/courseSessions.ts b/client/src/stores/courseSessions.ts
index d1a74013..9702dfd3 100644
--- a/client/src/stores/courseSessions.ts
+++ b/client/src/stores/courseSessions.ts
@@ -1,15 +1,6 @@
 import { itGetCached, itPost } from "@/fetchHelpers";
 import { deleteCircleDocument } from "@/services/files";
-import type {
-  CircleDocument,
-  CourseSession,
-  CourseSessionAssignment,
-  CourseSessionAttendanceCourse,
-  CourseSessionEdoniqTest,
-  CourseSessionUser,
-  DueDate,
-  ExpertSessionUser,
-} from "@/types";
+import type { CircleDocument, CourseSession, DueDate } from "@/types";
 import eventBus from "@/utils/eventBus";
 import { useRouteLookups } from "@/utils/route";
 import { useLocalStorage } from "@vueuse/core";
@@ -18,7 +9,6 @@ import uniqBy from "lodash/uniqBy";
 import log from "loglevel";
 import { defineStore } from "pinia";
 import { computed, ref } from "vue";
-import { useCircleStore } from "./circle";
 import { useUserStore } from "./user";
 
 const SELECTED_COURSE_SESSIONS_KEY = "selectedCourseSessionMap";
@@ -39,10 +29,6 @@ export const useCourseSessionsStore = defineStore("courseSessions", () => {
       // TODO: refactor after implementing of Klassenkonzept
       await Promise.all(
         allCourseSessions.value.map(async (cs) => {
-          const users = (await itGetCached(`/api/course/sessions/${cs.id}/users/`, {
-            reload: reload,
-          })) as CourseSessionUser[];
-          cs.users = users;
           sortDueDates(cs.due_dates);
         })
       );
@@ -161,56 +147,56 @@ export const useCourseSessionsStore = defineStore("courseSessions", () => {
     return Boolean(isCourseExpert && (inLearningPath() || inCompetenceProfile()));
   });
 
-  const circleExperts = computed(() => {
-    const circleStore = useCircleStore();
-    const circleTranslationKey = circleStore.circle?.translation_key;
+  // const circleExperts = computed(() => {
+  //   const circleStore = useCircleStore();
+  //   const circleTranslationKey = circleStore.circle?.translation_key;
+  //
+  //   if (currentCourseSession.value && circleTranslationKey) {
+  //     return currentCourseSession.value.users.filter((u) => {
+  //       if (u.role === "EXPERT") {
+  //         return (u as ExpertSessionUser).circles
+  //           .map((c) => c.translation_key)
+  //           .includes(circleTranslationKey);
+  //       }
+  //       return false;
+  //     }) as ExpertSessionUser[];
+  //   }
+  //   return [];
+  // });
 
-    if (currentCourseSession.value && circleTranslationKey) {
-      return currentCourseSession.value.users.filter((u) => {
-        if (u.role === "EXPERT") {
-          return (u as ExpertSessionUser).circles
-            .map((c) => c.translation_key)
-            .includes(circleTranslationKey);
-        }
-        return false;
-      }) as ExpertSessionUser[];
-    }
-    return [];
-  });
+  // const canUploadCircleDocuments = computed(() => {
+  //   const userStore = useUserStore();
+  //   return (
+  //     circleExperts.value.filter((expert) => expert.user_id === userStore.id).length > 0
+  //   );
+  // });
 
-  const canUploadCircleDocuments = computed(() => {
+  // const circleDocuments = computed(() => {
+  //   const circleStore = useCircleStore();
+  //
+  //   return (
+  //     circleStore.circle?.learningSequences
+  //       .map((ls) => ({ id: ls.id, title: ls.title, documents: [] }))
+  //       .map((ls: { id: number; title: string; documents: CircleDocument[] }) => {
+  //         if (currentCourseSession.value === undefined) {
+  //           return ls;
+  //         }
+  //
+  //         for (const document of currentCourseSession.value.documents) {
+  //           if (document.learning_sequence === ls.id) {
+  //             ls.documents.push(document);
+  //           }
+  //         }
+  //         return ls;
+  //       })
+  //       .filter((ls) => ls.documents.length > 0) || []
+  //   );
+  // });
+
+  function hasCockpit(courseSession: CourseSession) {
     const userStore = useUserStore();
     return (
-      circleExperts.value.filter((expert) => expert.user_id === userStore.id).length > 0
-    );
-  });
-
-  const circleDocuments = computed(() => {
-    const circleStore = useCircleStore();
-
-    return (
-      circleStore.circle?.learningSequences
-        .map((ls) => ({ id: ls.id, title: ls.title, documents: [] }))
-        .map((ls: { id: number; title: string; documents: CircleDocument[] }) => {
-          if (currentCourseSession.value === undefined) {
-            return ls;
-          }
-
-          for (const document of currentCourseSession.value.documents) {
-            if (document.learning_sequence === ls.id) {
-              ls.documents.push(document);
-            }
-          }
-          return ls;
-        })
-        .filter((ls) => ls.documents.length > 0) || []
-    );
-  });
-
-  function hasCockpit(couseSession: CourseSession) {
-    const userStore = useUserStore();
-    return (
-      userStore.course_session_experts.includes(couseSession.id) ||
+      userStore.course_session_experts.includes(courseSession.id) ||
       userStore.is_superuser
     );
   }
@@ -263,35 +249,35 @@ export const useCourseSessionsStore = defineStore("courseSessions", () => {
     );
   }
 
-  function findAttendanceCourse(
-    contentId: number
-  ): CourseSessionAttendanceCourse | undefined {
-    if (currentCourseSession.value) {
-      return currentCourseSession.value.attendance_courses.find(
-        (attendanceCourse) => attendanceCourse.learning_content_id === contentId
-      );
-    }
-  }
+  // function findAttendanceCourse(
+  //   contentId: number
+  // ): CourseSessionAttendanceCourse | undefined {
+  //   if (currentCourseSession.value) {
+  //     return currentCourseSession.value.attendance_courses.find(
+  //       (attendanceCourse) => attendanceCourse.learning_content_id === contentId
+  //     );
+  //   }
+  // }
 
-  function findCourseSessionAssignment(
-    contentId?: number
-  ): CourseSessionAssignment | undefined {
-    if (contentId && currentCourseSession.value) {
-      return currentCourseSession.value.assignments.find(
-        (a) => a.learning_content_id === contentId
-      );
-    }
-  }
-
-  function findCourseSessionEdoniqTest(
-    contentId?: number
-  ): CourseSessionEdoniqTest | undefined {
-    if (contentId && currentCourseSession.value) {
-      return currentCourseSession.value.edoniq_tests.find(
-        (a) => a.learning_content_id === contentId
-      );
-    }
-  }
+  // function findCourseSessionAssignment(
+  //   contentId?: number
+  // ): CourseSessionAssignment | undefined {
+  //   if (contentId && currentCourseSession.value) {
+  //     return currentCourseSession.value.assignments.find(
+  //       (a) => a.learning_content_id === contentId
+  //     );
+  //   }
+  // }
+  //
+  // function findCourseSessionEdoniqTest(
+  //   contentId?: number
+  // ): CourseSessionEdoniqTest | undefined {
+  //   if (contentId && currentCourseSession.value) {
+  //     return currentCourseSession.value.edoniq_tests.find(
+  //       (a) => a.learning_content_id === contentId
+  //     );
+  //   }
+  // }
 
   return {
     uniqueCourseSessionsByCourse,
@@ -302,15 +288,9 @@ export const useCourseSessionsStore = defineStore("courseSessions", () => {
     hasCockpit,
     hasCourseSessionPreview,
     currentCourseSessionHasCockpit,
-    canUploadCircleDocuments,
-    circleDocuments,
-    circleExperts,
     addDocument,
     startUpload,
     removeDocument,
-    findAttendanceCourse,
-    findCourseSessionAssignment,
-    findCourseSessionEdoniqTest,
     allDueDates,
 
     // use `useCurrentCourseSession` whenever possible
diff --git a/client/src/types.ts b/client/src/types.ts
index f115ef1c..8f46843b 100644
--- a/client/src/types.ts
+++ b/client/src/types.ts
@@ -479,13 +479,23 @@ export interface CourseSessionAttendanceCourse {
 }
 
 export interface CourseSessionAssignment {
-  id: number;
-  course_session_id: number;
-  learning_content_id: number;
-  submission_deadline_id: number;
-  submission_deadline_start: string;
-  evaluation_deadline_id: number;
-  evaluation_deadline_start: string;
+  id: string;
+  submission_deadline: {
+    id: string;
+    start: string;
+  };
+  evaluation_deadline: {
+    id: string;
+    start: string;
+  };
+  learning_content: {
+    id: string;
+    content_assignment: {
+      id: string;
+      title: string;
+      assignment_type: AssignmentType;
+    };
+  };
 }
 
 export interface CourseSessionEdoniqTest {
@@ -504,29 +514,34 @@ export interface CourseSession {
   title: string;
   start_date: string;
   end_date: string;
-  learning_path_url: string;
-  cockpit_url: string;
-  competence_url: string;
+  // learning_path_url: string;
+  // cockpit_url: string;
+  // competence_url: string;
   course_url: string;
-  media_library_url: string;
-  attendance_courses: CourseSessionAttendanceCourse[];
-  assignments: CourseSessionAssignment[];
-  edoniq_tests: CourseSessionEdoniqTest[];
-  documents: CircleDocument[];
-  users: CourseSessionUser[];
+  // media_library_url: string;
+  // attendance_courses: CourseSessionAttendanceCourse[];
+  // assignments: CourseSessionAssignment[];
+  // edoniq_tests: CourseSessionEdoniqTest[];
+  // documents: CircleDocument[];
+  // users: CourseSessionUser[];
   due_dates: DueDate[];
 }
 
 export type Role = "MEMBER" | "EXPERT" | "TUTOR";
 
 export interface CourseSessionUser {
-  session_title: string;
   user_id: string;
   first_name: string;
   last_name: string;
   email: string;
   avatar_url: string;
   role: Role;
+  circles: {
+    id: number;
+    title: string;
+    slug: string;
+    translation_key: string;
+  }[];
 }
 
 export interface ExpertSessionUser extends CourseSessionUser {
@@ -539,6 +554,17 @@ export interface ExpertSessionUser extends CourseSessionUser {
   }[];
 }
 
+export interface CourseSessionDetail {
+  id: string;
+  title: string;
+  course: {
+    id: string;
+    title: string;
+  };
+  assignments: CourseSessionAssignment[];
+  users: CourseSessionUser[];
+}
+
 // document upload
 export interface DocumentUploadData {
   file: File | null;
diff --git a/client/src/utils/utils.ts b/client/src/utils/utils.ts
index a683c4d7..191f1176 100644
--- a/client/src/utils/utils.ts
+++ b/client/src/utils/utils.ts
@@ -5,12 +5,30 @@ export function assertUnreachable(msg: string): never {
   throw new Error("Didn't expect to get here, " + msg);
 }
 
-export function getCompetenceBaseUrl(courseSession: CourseSession): string {
-  return courseSession.competence_url.replace(
-    // TODO: remove the `competence_url` with url to Navi...
-    "/competences",
-    ""
-  );
+function createCourseUrl(
+  courseSession: CourseSession | undefined,
+  specificSub: string
+): string {
+  if (!courseSession) {
+    return "";
+  }
+
+  if (["learn", "media", "competence"].includes(specificSub)) {
+    return `${courseSession.course_url}/${specificSub}`;
+  }
+  return courseSession.course_url;
+}
+
+export function getCompetenceNaviUrl(courseSession: CourseSession | undefined): string {
+  return createCourseUrl(courseSession, "competence");
+}
+
+export function getMediaCenterUrl(courseSession: CourseSession | undefined): string {
+  return createCourseUrl(courseSession, "media");
+}
+
+export function getLearningPathUrl(courseSession: CourseSession | undefined): string {
+  return createCourseUrl(courseSession, "learn");
 }
 
 export function getAssignmentTypeTitle(assignmentType: AssignmentType): string {
diff --git a/server/config/urls.py b/server/config/urls.py
index 98bf6f48..75e92863 100644
--- a/server/config/urls.py
+++ b/server/config/urls.py
@@ -110,9 +110,9 @@ urlpatterns = [
 
     # course
     path(r"api/course/sessions/", get_course_sessions, name="get_course_sessions"),
-    path(r"api/course/sessions/<signed_int:course_session_id>/users/",
-         get_course_session_users,
-         name="get_course_session_users"),
+    # path(r"api/course/sessions/<signed_int:course_session_id>/users/",
+    #      get_course_session_users,
+    #      name="get_course_session_users"),
     path(r"api/course/page/<slug_or_id>/", course_page_api_view,
          name="course_page_api_view"),
     path(r"api/course/completion/mark/", mark_course_completion_view,
diff --git a/server/vbv_lernwelt/course/graphql/queries.py b/server/vbv_lernwelt/course/graphql/queries.py
index c0473cf1..b9307c81 100644
--- a/server/vbv_lernwelt/course/graphql/queries.py
+++ b/server/vbv_lernwelt/course/graphql/queries.py
@@ -1,15 +1,22 @@
 import graphene
 
-from vbv_lernwelt.course.graphql.types import CourseObjectType
-from vbv_lernwelt.course.models import Course
+from vbv_lernwelt.course.graphql.types import CourseObjectType, CourseSessionObjectType
+from vbv_lernwelt.course.models import Course, CourseSession
 from vbv_lernwelt.course.permissions import has_course_access
 
 
 class CourseQuery(graphene.ObjectType):
-    course = graphene.Field(CourseObjectType, id=graphene.Int())
+    course = graphene.Field(CourseObjectType, id=graphene.ID())
+    course_session = graphene.Field(CourseSessionObjectType, id=graphene.ID())
 
     def resolve_course(root, info, id):
         course = Course.objects.get(pk=id)
         if has_course_access(info.context.user, course):
             return course
         raise PermissionError("You do not have access to this course")
+
+    def resolve_course_session(root, info, id):
+        course_session = CourseSession.objects.get(pk=id)
+        if has_course_access(info.context.user, course_session.course):
+            return course_session
+        raise PermissionError("You do not have access to this course session")
diff --git a/server/vbv_lernwelt/course/graphql/types.py b/server/vbv_lernwelt/course/graphql/types.py
index 39985bae..0f8040ec 100644
--- a/server/vbv_lernwelt/course/graphql/types.py
+++ b/server/vbv_lernwelt/course/graphql/types.py
@@ -2,12 +2,24 @@ from typing import Type
 
 import graphene
 import structlog
+from graphene import ObjectType
 from graphene_django import DjangoObjectType
 from graphql import GraphQLError
 from rest_framework.exceptions import PermissionDenied
 
-from vbv_lernwelt.course.models import Course, CourseBasePage, CoursePage
+from vbv_lernwelt.course.models import Course, CourseBasePage, CoursePage, \
+    CourseSession, CourseSessionUser
 from vbv_lernwelt.course.permissions import has_course_access
+from vbv_lernwelt.course_session.graphql.types import (
+    CourseSessionAttendanceCourseObjectType,
+    CourseSessionAssignmentObjectType,
+    CourseSessionEdoniqTestObjectType,
+)
+from vbv_lernwelt.course_session.models import (
+    CourseSessionAttendanceCourse,
+    CourseSessionAssignment,
+    CourseSessionEdoniqTest,
+)
 from vbv_lernwelt.learnpath.graphql.types import LearningPathObjectType
 
 logger = structlog.get_logger(__name__)
@@ -74,3 +86,89 @@ class CourseObjectType(DjangoObjectType):
 
     def resolve_learning_path(self, info):
         return self.get_learning_path()
+
+
+class CourseSessionUserExpertCircleType(ObjectType):
+    id = graphene.ID()
+    title = graphene.String()
+    slug = graphene.String()
+
+
+class CourseSessionUserObjectsType(DjangoObjectType):
+    user_id = graphene.UUID()
+    first_name = graphene.String()
+    last_name = graphene.String()
+    email = graphene.String()
+    avatar_url = graphene.String()
+    role = graphene.String()
+    circles = graphene.List(CourseSessionUserExpertCircleType)
+
+    class Meta:
+        model = CourseSessionUser
+        fields = (
+            "id",
+            "user_id",
+            "first_name",
+            "last_name",
+            "email",
+            "avatar_url",
+            "role",
+        )
+
+    def resolve_user_id(self, info):
+        return self.user.id
+
+    def resolve_first_name(self, info):
+        return self.user.first_name
+
+    def resolve_last_name(self, info):
+        return self.user.last_name
+
+    def resolve_email(self, info):
+        return self.user.email
+
+    def resolve_avatar_url(self, info):
+        return self.user.avatar_url
+
+    def resolve_role(self, info):
+        return self.role
+
+    def resolve_circles(self, info):
+        return self.expert.all().values(
+            "id", "title", "slug", "translation_key"
+        )
+
+
+class CourseSessionObjectType(DjangoObjectType):
+    attendance_courses = graphene.List(CourseSessionAttendanceCourseObjectType)
+    assignments = graphene.List(CourseSessionAssignmentObjectType)
+    edoniq_tests = graphene.List(CourseSessionEdoniqTestObjectType)
+    users = graphene.List(CourseSessionUserObjectsType)
+
+    class Meta:
+        model = CourseSession
+        fields = (
+            "id",
+            "created_at",
+            "updated_at",
+            "course",
+            "title",
+            "start_date",
+            "end_date",
+            "attendance_courses",
+            "users",
+        )
+
+    def resolve_attendance_courses(self, info):
+        return CourseSessionAttendanceCourse.objects.filter(course_session=self)
+
+    def resolve_assignments(self, info):
+        return CourseSessionAssignment.objects.filter(course_session=self)
+
+    def resolve_edoniq_test(self, info):
+        return CourseSessionEdoniqTest.objects.filter(course_session=self)
+
+    def resolve_users(self, info):
+        return CourseSessionUser.objects.filter(
+            course_session_id=self.id
+        ).distinct()
diff --git a/server/vbv_lernwelt/course/serializers.py b/server/vbv_lernwelt/course/serializers.py
index a1b1ba56..25e29421 100644
--- a/server/vbv_lernwelt/course/serializers.py
+++ b/server/vbv_lernwelt/course/serializers.py
@@ -56,14 +56,15 @@ class CourseCompletionSerializer(serializers.ModelSerializer):
 class CourseSessionSerializer(serializers.ModelSerializer):
     course = serializers.SerializerMethodField()
     course_url = serializers.SerializerMethodField()
-    learning_path_url = serializers.SerializerMethodField()
-    cockpit_url = serializers.SerializerMethodField()
-    competence_url = serializers.SerializerMethodField()
-    media_library_url = serializers.SerializerMethodField()
-    documents = serializers.SerializerMethodField()
-    attendance_courses = serializers.SerializerMethodField()
-    assignments = serializers.SerializerMethodField()
-    edoniq_tests = serializers.SerializerMethodField()
+    # learning_path_url = serializers.SerializerMethodField()
+    # cockpit_url = serializers.SerializerMethodField()
+    # competence_url = serializers.SerializerMethodField()
+    # media_library_url = serializers.SerializerMethodField()
+    # documents = serializers.SerializerMethodField()
+    # attendance_courses = serializers.SerializerMethodField()
+    # assignments = serializers.SerializerMethodField()
+    # edoniq_tests = serializers.SerializerMethodField()
+
     due_dates = serializers.SerializerMethodField()
 
     def get_course(self, obj):
@@ -119,16 +120,16 @@ class CourseSessionSerializer(serializers.ModelSerializer):
             "title",
             "start_date",
             "end_date",
-            "additional_json_data",
-            "attendance_courses",
-            "assignments",
-            "edoniq_tests",
-            "learning_path_url",
-            "cockpit_url",
-            "competence_url",
-            "media_library_url",
+            # "additional_json_data",
+            # "attendance_courses",
+            # "assignments",
+            # "edoniq_tests",
+            # "learning_path_url",
+            # "cockpit_url",
+            # "competence_url",
+            # "media_library_url",
             "course_url",
-            "documents",
+            # "documents",
             "due_dates",
         ]
 
diff --git a/server/vbv_lernwelt/course/views.py b/server/vbv_lernwelt/course/views.py
index 9a6b511f..7101a72a 100644
--- a/server/vbv_lernwelt/course/views.py
+++ b/server/vbv_lernwelt/course/views.py
@@ -6,7 +6,6 @@ from rest_framework.response import Response
 from wagtail.models import Page
 
 from vbv_lernwelt.core.utils import get_django_content_type
-
 from vbv_lernwelt.course.models import (
     CircleDocument,
     CourseCompletion,
@@ -135,7 +134,9 @@ def mark_course_completion_view(request):
 @api_view(["GET"])
 def get_course_sessions(request):
     try:
-        course_sessions = course_sessions_for_user_qs(request.user)
+        course_sessions = course_sessions_for_user_qs(request.user).prefetch_related(
+            "course"
+        )
         return Response(
             status=200, data=CourseSessionSerializer(course_sessions, many=True).data
         )
@@ -149,7 +150,9 @@ def get_course_sessions(request):
 @api_view(["GET"])
 def get_course_session_users(request, course_session_id):
     try:
-        qs = CourseSessionUser.objects.filter(course_session_id=course_session_id)
+        qs = CourseSessionUser.objects.filter(
+            course_session_id=course_session_id
+        ).distinct()
 
         user_data = [csu.to_dict() for csu in qs]
         return Response(status=200, data=user_data)
diff --git a/server/vbv_lernwelt/course_session/graphql/mutations.py b/server/vbv_lernwelt/course_session/graphql/mutations.py
index e8bedaac..189817db 100644
--- a/server/vbv_lernwelt/course_session/graphql/mutations.py
+++ b/server/vbv_lernwelt/course_session/graphql/mutations.py
@@ -3,7 +3,9 @@ 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.graphql.types import (
+    CourseSessionAttendanceCourseObjectType,
+)
 from vbv_lernwelt.course_session.models import CourseSessionAttendanceCourse
 from vbv_lernwelt.course_session.services.attendance import (
     AttendanceUserStatus,
@@ -21,7 +23,9 @@ class AttendanceUserInputType(graphene.InputObjectType):
 
 
 class AttendanceCourseUserMutation(graphene.Mutation):
-    course_session_attendance_course = graphene.Field(CourseSessionAttendanceCourseType)
+    course_session_attendance_course = graphene.Field(
+        CourseSessionAttendanceCourseObjectType
+    )
 
     class Input:
         id = graphene.ID(required=True)
diff --git a/server/vbv_lernwelt/course_session/graphql/queries.py b/server/vbv_lernwelt/course_session/graphql/queries.py
index 66f61994..899cd93a 100644
--- a/server/vbv_lernwelt/course_session/graphql/queries.py
+++ b/server/vbv_lernwelt/course_session/graphql/queries.py
@@ -3,13 +3,15 @@ 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.graphql.types import (
+    CourseSessionAttendanceCourseObjectType,
+)
 from vbv_lernwelt.course_session.models import CourseSessionAttendanceCourse
 
 
 class CourseSessionQuery(object):
     course_session_attendance_course = graphene.Field(
-        CourseSessionAttendanceCourseType,
+        CourseSessionAttendanceCourseObjectType,
         id=graphene.ID(required=True),
         assignment_user_id=graphene.ID(required=False),
     )
diff --git a/server/vbv_lernwelt/course_session/graphql/types.py b/server/vbv_lernwelt/course_session/graphql/types.py
index bc1a0f4c..7067defa 100644
--- a/server/vbv_lernwelt/course_session/graphql/types.py
+++ b/server/vbv_lernwelt/course_session/graphql/types.py
@@ -1,11 +1,21 @@
 import graphene
 from graphene_django import DjangoObjectType
 
-from vbv_lernwelt.course_session.models import CourseSessionAttendanceCourse
+from vbv_lernwelt.course.permissions import is_course_session_expert
+from vbv_lernwelt.course_session.models import (
+    CourseSessionAttendanceCourse,
+    CourseSessionAssignment,
+)
 from vbv_lernwelt.course_session.services.attendance import AttendanceUserStatus
+from vbv_lernwelt.duedate.graphql.types import DueDateObjectType
+from vbv_lernwelt.learnpath.graphql.types import (
+    LearningContentAssignmentObjectType,
+    LearningContentAttendanceCourseObjectType,
+    LearningContentEdoniqTestObjectType,
+)
 
 
-class AttendanceUserType(graphene.ObjectType):
+class AttendanceUserObjectType(graphene.ObjectType):
     user_id = graphene.UUID(required=True)
     status = graphene.Field(
         graphene.Enum.from_enum(AttendanceUserStatus), required=True
@@ -15,15 +25,14 @@ class AttendanceUserType(graphene.ObjectType):
     email = graphene.String()
 
 
-class CourseSessionAttendanceCourseType(DjangoObjectType):
+class CourseSessionAttendanceCourseObjectType(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"
+        AttendanceUserObjectType, source="attendance_user_list"
     )
+    due_date = graphene.Field(DueDateObjectType)
+    learning_content = graphene.Field(LearningContentAttendanceCourseObjectType)
 
     class Meta:
         model = CourseSessionAttendanceCourse
@@ -31,19 +40,49 @@ class CourseSessionAttendanceCourseType(DjangoObjectType):
             "id",
             "course_session_id",
             "learning_content_id",
-            "due_date_id",
+            "learning_content",
             "location",
             "trainer",
-            "start",
-            "end",
+            "due_date",
         )
 
-    def resolve_start(self, info):
-        if self.due_date is None:
-            return None
-        return self.due_date.start
+    def resolve_attendance_user_list(self, info):
+        if is_course_session_expert(info.context.user, self.course_session_id):
+            return self.attendance_user_list
+        return []
 
-    def resolve_end(self, info):
-        if self.due_date is None:
-            return None
-        return self.due_date.end
+
+class CourseSessionAssignmentObjectType(DjangoObjectType):
+    course_session_id = graphene.ID(source="course_session_id")
+    learning_content_id = graphene.ID(source="learning_content_id")
+    submission_deadline = graphene.Field(DueDateObjectType)
+    evaluation_deadline = graphene.Field(DueDateObjectType)
+    learning_content = graphene.Field(LearningContentAssignmentObjectType)
+
+    class Meta:
+        model = CourseSessionAssignment
+        fields = (
+            "id",
+            "course_session_id",
+            "learning_content_id",
+            "submission_deadline",
+            "evaluation_deadline",
+            "learning_content",
+        )
+
+
+class CourseSessionEdoniqTestObjectType(DjangoObjectType):
+    course_session_id = graphene.ID(source="course_session_id")
+    learning_content_id = graphene.ID(source="learning_content_id")
+    deadline = graphene.Field(DueDateObjectType)
+    learning_content = graphene.Field(LearningContentEdoniqTestObjectType)
+
+    class Meta:
+        model = CourseSessionAssignment
+        fields = (
+            "id",
+            "course_session_id",
+            "learning_content_id",
+            "deadline",
+            "learning_content",
+        )
diff --git a/server/vbv_lernwelt/duedate/graphql/__init__.py b/server/vbv_lernwelt/duedate/graphql/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/server/vbv_lernwelt/duedate/graphql/types.py b/server/vbv_lernwelt/duedate/graphql/types.py
new file mode 100644
index 00000000..172febbd
--- /dev/null
+++ b/server/vbv_lernwelt/duedate/graphql/types.py
@@ -0,0 +1,21 @@
+from graphene_django import DjangoObjectType
+
+from vbv_lernwelt.duedate.models import DueDate
+
+
+class DueDateObjectType(DjangoObjectType):
+    class Meta:
+        model = DueDate
+        fields = (
+            "id",
+            "start",
+            "end",
+            "manual_override_fields",
+            "title",
+            "assignment_type_translation_key",
+            "date_type_translation_key",
+            "subtitle",
+            "url",
+            "course_session",
+            "page",
+        )
diff --git a/server/vbv_lernwelt/duedate/serializers.py b/server/vbv_lernwelt/duedate/serializers.py
index 5529a924..11a2734b 100644
--- a/server/vbv_lernwelt/duedate/serializers.py
+++ b/server/vbv_lernwelt/duedate/serializers.py
@@ -4,7 +4,7 @@ from vbv_lernwelt.duedate.models import DueDate
 
 
 class DueDateSerializer(serializers.ModelSerializer):
-    circle = serializers.SerializerMethodField()
+    # circle = serializers.SerializerMethodField()
 
     class Meta:
         model = DueDate
@@ -20,7 +20,7 @@ class DueDateSerializer(serializers.ModelSerializer):
             "url_expert",
             "course_session",
             "page",
-            "circle",
+            # "circle",
         ]
 
     def get_circle(self, obj):
diff --git a/server/vbv_lernwelt/learnpath/graphql/queries.py b/server/vbv_lernwelt/learnpath/graphql/queries.py
index 00e9faf8..b4517fe2 100644
--- a/server/vbv_lernwelt/learnpath/graphql/queries.py
+++ b/server/vbv_lernwelt/learnpath/graphql/queries.py
@@ -11,7 +11,7 @@ from vbv_lernwelt.learnpath.graphql.types import (
     LearningContentMediaLibraryObjectType,
     LearningContentPlaceholderObjectType,
     LearningContentRichTextObjectType,
-    LearningContentTestObjectType,
+    LearningContentEdoniqTestObjectType,
     LearningContentVideoObjectType,
     LearningPathObjectType,
 )
@@ -58,7 +58,7 @@ class LearningPathQuery:
     )
     learning_content_placeholder = graphene.Field(LearningContentPlaceholderObjectType)
     learning_content_rich_text = graphene.Field(LearningContentRichTextObjectType)
-    learning_content_test = graphene.Field(LearningContentTestObjectType)
+    learning_content_test = graphene.Field(LearningContentEdoniqTestObjectType)
     learning_content_video = graphene.Field(LearningContentVideoObjectType)
     learning_content_document_list = graphene.Field(
         LearningContentDocumentListObjectType
diff --git a/server/vbv_lernwelt/learnpath/graphql/types.py b/server/vbv_lernwelt/learnpath/graphql/types.py
index c055b4d9..3c568797 100644
--- a/server/vbv_lernwelt/learnpath/graphql/types.py
+++ b/server/vbv_lernwelt/learnpath/graphql/types.py
@@ -47,7 +47,7 @@ class LearningContentInterface(CoursePageInterface):
         elif isinstance(instance, LearningContentRichText):
             return LearningContentRichTextObjectType
         elif isinstance(instance, LearningContentEdoniqTest):
-            return LearningContentTestObjectType
+            return LearningContentEdoniqTestObjectType
         elif isinstance(instance, LearningContentVideo):
             return LearningContentVideoObjectType
         elif isinstance(instance, LearningContentDocumentList):
@@ -102,7 +102,7 @@ class LearningContentMediaLibraryObjectType(DjangoObjectType):
         fields = []
 
 
-class LearningContentTestObjectType(DjangoObjectType):
+class LearningContentEdoniqTestObjectType(DjangoObjectType):
     class Meta:
         model = LearningContentEdoniqTest
         interfaces = (LearningContentInterface,)