diff --git a/backend/api/signals.py b/backend/api/signals.py
index a1790662..f7e42d89 100644
--- a/backend/api/signals.py
+++ b/backend/api/signals.py
@@ -7,6 +7,7 @@
 from api.models.student import Student
 from api.models.submission import (ExtraCheckResult, StateEnum,
                                    StructureCheckResult, Submission)
+from api.models.teacher import Teacher
 from api.tasks.docker_image import (task_docker_image_build,
                                     task_docker_image_remove)
 from api.tasks.extra_check import task_extra_check_start
@@ -35,8 +36,11 @@ def _user_creation(user: User, attributes: dict, **_):
     """Upon user creation, auto-populate additional properties"""
     student_id: str = cast(str, attributes.get("ugentStudentID"))
 
-    if student_id is not None:
+    if student_id is None:
         Student.create(user, student_id=student_id)
+    else:
+        # For now, we assume that everyone without a student ID is a teacher.
+        Teacher.create(user)
 
 
 @receiver(run_docker_image_build)
diff --git a/backend/api/tasks/docker_image.py b/backend/api/tasks/docker_image.py
index 73946f60..b4a1eb9f 100644
--- a/backend/api/tasks/docker_image.py
+++ b/backend/api/tasks/docker_image.py
@@ -21,7 +21,7 @@ def task_docker_image_build(docker_image: DockerImage):
         client.images.build(path=MEDIA_ROOT, dockerfile=docker_image.file.path,
                             tag=get_docker_image_tag(docker_image), rm=True, quiet=True, forcerm=True)
         docker_image.state = StateEnum.READY
-    except Exception:
+    except (docker.errors.BuildError, docker.errors.APIError):
         docker_image.state = StateEnum.ERROR
         notification_type = NotificationType.DOCKER_IMAGE_BUILD_ERROR
     finally:
diff --git a/backend/api/views/user_view.py b/backend/api/views/user_view.py
index 413a975c..b4ae6c93 100644
--- a/backend/api/views/user_view.py
+++ b/backend/api/views/user_view.py
@@ -86,7 +86,7 @@ def notifications(self, request: Request, pk: str):
         # Get the notifications for the user
         notifications = Notification.objects.filter(user=pk, is_read=False).order_by("-created_at")
 
-        if 0 < notifications.count() < count:
+        if notifications.count() < count:
             notifications = list(notifications) + list(
                 Notification.objects.filter(user=pk, is_read=True).order_by("-created_at")[:count - notifications.count()]
             )
diff --git a/frontend/src/components/projects/groups/GroupsManageTable.vue b/frontend/src/components/projects/groups/GroupsManageTable.vue
index 7dbc59b4..c254e66f 100644
--- a/frontend/src/components/projects/groups/GroupsManageTable.vue
+++ b/frontend/src/components/projects/groups/GroupsManageTable.vue
@@ -2,7 +2,7 @@
 import DataTable, { type DataTableRowExpandEvent } from 'primevue/datatable';
 import Column from 'primevue/column';
 import AllSubmission from '@/components/submissions/AllSubmission.vue';
-import InputNumber from 'primevue/inputnumber';
+import InputNumber, { InputNumberBlurEvent } from 'primevue/inputnumber';
 import { type Project } from '@/types/Project.ts';
 import { useStudents } from '@/composables/services/student.service.ts';
 import { ref } from 'vue';
@@ -35,7 +35,7 @@ const editingGroup = ref<Group | null>();
  * @param group The group to update.
  * @param score The new score.
  */
-function updateGroupScore(group: Group, score: number): void {
+function updateGroupScore(group: Group, score: number|string): void {
     emit('update:group-score', group, score);
     editingGroup.value = null;
 }
@@ -79,7 +79,7 @@ async function expandGroup(event: DataTableRowExpandEvent): Promise<void> {
             <template #body="{ data }">
                 <i :class="PrimeIcons.CHART_BAR" class="mr-2" />
                 <template v-if="editingGroup === data">
-                    <InputNumber :model-value="data.score" @change="updateGroupScore(data, $event.target.value)" /> /
+                    <InputNumber :model-value="data.score" @blur="(event: InputNumberBlurEvent) => updateGroupScore(data, event.value)" /> /
                     {{ project.max_score }}
                 </template>
                 <template v-else>
diff --git a/frontend/src/views/projects/roles/TeacherProjectView.vue b/frontend/src/views/projects/roles/TeacherProjectView.vue
index 9224a6fd..2ebe9ade 100644
--- a/frontend/src/views/projects/roles/TeacherProjectView.vue
+++ b/frontend/src/views/projects/roles/TeacherProjectView.vue
@@ -17,6 +17,7 @@ import { useRoute } from 'vue-router';
 import { useMessagesStore } from '@/store/messages.store.ts';
 import { type Group } from '@/types/Group.ts';
 import { type Assistant } from '@/types/users/Assistant.ts';
+import { processError } from '@/composables/services/helpers.ts';
 
 /* Props */
 defineProps<{
@@ -37,11 +38,18 @@ const { groups, getGroupsByProject, updateGroup } = useGroup();
  * @param score The new score.
  */
 async function updateGroupScore(group: Group, score: number): Promise<void> {
-    await updateGroup({
-        ...group,
-        score,
-    });
-    group.score = score;
+    try {
+        await updateGroup({
+            ...group,
+            score,
+        }, false);
+
+        group.score = score;
+
+        addSuccessMessage('Gelukt', 'De groepsscore is bijgewerkt.');
+    } catch (error) {
+        processError(error);
+    }
 }
 
 /**