diff --git a/advlabdb/assistantModelViews.py b/advlabdb/assistantModelViews.py
index bec6629..19674c1 100644
--- a/advlabdb/assistantModelViews.py
+++ b/advlabdb/assistantModelViews.py
@@ -20,6 +20,7 @@ from .model_dependent_funs import (
     generate_new_password_field,
     initActiveSemesterMenuLinks,
     mark_field,
+    parse_selection_mark_field,
     user_info_fields,
 )
 from .model_independent_funs import randomPassword, reportBadAttempt
@@ -101,12 +102,24 @@ class AssistantGroupExperimentView(SecureAssistantModelView):
         ]
 
         if form.validate_on_submit():
-            for ind, appointment in enumerate(appointments):
-                appointment.date = appointment_fields[ind].data
+            try:
+                for ind, appointment in enumerate(appointments):
+                    appointment.date = appointment_fields[ind].data
 
-            group_experiment.note = form.note.data
+                for ind, experiment_mark in enumerate(experiment_marks):
+                    experiment_mark.oral_mark = parse_selection_mark_field(oral_experiment_mark_fields[ind])
+                    experiment_mark.protocol_mark = parse_selection_mark_field(protocol_experiment_mark_fields[ind])
 
-            db.session.commit()
+                group_experiment.note = form.note.data
+
+                db.session.commit()
+
+                red = url_for("index") + "assistant/group_experiment"
+                return redirect(red)
+            except Exception as ex:
+                flash(str(ex), "error")
+
+                db.session.rollback()
 
         return self.render(
             "assistant_group_experiment_form.html",