diff --git a/firka/lib/helpers/db/models/homework_cache_model.dart b/firka/lib/helpers/db/models/homework_cache_model.dart
index 6ab664b..1090ad7 100644
--- a/firka/lib/helpers/db/models/homework_cache_model.dart
+++ b/firka/lib/helpers/db/models/homework_cache_model.dart
@@ -27,3 +27,40 @@ Future<void> resetOldHomeworkCache(Isar isar) async {
     await isar.homeworkCacheModels.deleteAll(weeksToRemove);
   });
 }
+
+@collection 
+class HomeworkDoneModel {
+  Id? id;
+
+  late String homeworkId;
+  late DateTime doneAt;
+
+  HomeworkDoneModel();
+
+}
+Future<void> markAsDone(Isar isar, String homeWorkUid) async {
+  await isar.writeTxn(() async {
+    await isar.homeworkDoneModels.put(HomeworkDoneModel()
+      ..homeworkId = homeWorkUid
+      ..doneAt = DateTime.now());
+  });
+}
+
+Future<void> markAsNotDone(Isar isar, String homeWorkUid) async {
+  await isar.writeTxn(() async {
+    final idsToDelete = await isar.homeworkDoneModels
+        .filter()
+        .homeworkIdEqualTo(homeWorkUid)
+        .idProperty()
+        .findAll();
+    await isar.homeworkDoneModels.deleteAll(idsToDelete);
+  });
+}
+
+Future<bool> isHomeworkDone(Isar isar, String homeWorkUid) async {
+  var existing = await isar.homeworkDoneModels
+      .filter()
+      .homeworkIdEqualTo(homeWorkUid)
+      .findFirst();
+  return existing != null;
+} 
\ No newline at end of file