diff --git a/cntmanage/flightslot/admins/hourbuilding_adm.py b/cntmanage/flightslot/admins/hourbuilding_adm.py
index 08de6f6..921fbfd 100644
--- a/cntmanage/flightslot/admins/hourbuilding_adm.py
+++ b/cntmanage/flightslot/admins/hourbuilding_adm.py
@@ -11,6 +11,8 @@ from ..models.hourbuildings import HourBuilding, HourBuildingLegBase, HourBuildi
 from ..models.weekpref import WeekPreference
 from ..models.students import Student
 
+from ..custom.student_permissions import has_edit_permission
+
 from datetime import date
 
 class HourBuildingLegFlightForm(forms.ModelForm):
@@ -75,12 +77,7 @@ class HourBuildingInLine(nested_admin.NestedTabularInline):
 
     # If user is a student deny edit permission for week past the current one
     def has_change_permission(self, request: HttpRequest, obj: WeekPreference | None = None) -> bool:
-        if hasattr(request.user, 'student') and obj:
-            student: Student = request.user.student
-            current_week: int = date.today().isocalendar().week
-            if current_week > obj.week or not student.active:
-                return False
-        return True
+        return has_edit_permission(request=request, obj=obj)
     
     def has_delete_permission(self, request: HttpRequest, obj: WeekPreference | None = None) -> bool:
         return self.has_change_permission(request=request, obj=obj)
diff --git a/cntmanage/flightslot/admins/training_adm.py b/cntmanage/flightslot/admins/training_adm.py
index 9f7ed07..1170f07 100644
--- a/cntmanage/flightslot/admins/training_adm.py
+++ b/cntmanage/flightslot/admins/training_adm.py
@@ -8,6 +8,8 @@ from ..models.students import Student
 from ..models.missions import Training
 from ..models.weekpref import WeekPreference
 
+from ..custom.student_permissions import has_edit_permission
+
 from datetime import date
 
 class TrainingForm(forms.ModelForm):
@@ -28,12 +30,7 @@ class TrainingInLIne(nested_admin.NestedTabularInline):
 
     # If user is a student deny edit permission for week past the current one
     def has_change_permission(self, request: HttpRequest, obj: WeekPreference | None = None) -> bool:
-        if hasattr(request.user, 'student') and obj:
-            student: Student = request.user.student
-            current_week: int = date.today().isocalendar().week
-            if current_week > obj.week or not student.active:
-                return False
-        return True
+        return has_edit_permission(request=request, obj=obj)
     
     def has_delete_permission(self, request: HttpRequest, obj: WeekPreference | None = None) -> bool:
         return self.has_change_permission(request=request, obj=obj)
diff --git a/cntmanage/flightslot/admins/weekpref_adm.py b/cntmanage/flightslot/admins/weekpref_adm.py
index fa74b0b..123670a 100644
--- a/cntmanage/flightslot/admins/weekpref_adm.py
+++ b/cntmanage/flightslot/admins/weekpref_adm.py
@@ -15,6 +15,7 @@ from .training_adm import TrainingInLIne
 from .hourbuilding_adm import HourBuildingInLine
 
 from ..custom.colortag import course_color
+from ..custom.student_permissions import has_edit_permission
 from ..actions.exportweek import export_selected
 
 from datetime import date
@@ -88,12 +89,7 @@ class WeekPreferenceAdmin(nested_admin.NestedPolymorphicModelAdmin):
     
     # If user is a student deny edit permission for week past the current one
     def has_change_permission(self, request: HttpRequest, obj: WeekPreference | None = None) -> bool:
-        if hasattr(request.user, "student") and obj:
-            student: Student = request.user.student
-            current_week = date.today().isocalendar().week
-            if current_week > obj.week or not student.active:
-                return False
-        return True
+        return has_edit_permission(request=request, obj=obj)
     
     # If user is a student deny edit permission for week past the current one
     def has_add_permission(self, request: HttpRequest, obj: WeekPreference | None = None) -> bool:
@@ -106,10 +102,8 @@ class WeekPreferenceAdmin(nested_admin.NestedPolymorphicModelAdmin):
     def changeform_view(self, request: HttpRequest, object_id: int | None = None, form_url: str = "", extra_context=None):
         extra_context = extra_context or {}
         if hasattr(request.user, "student") and object_id:
-            student: Student = request.user.student
-            current_week = date.today().isocalendar().week
             weekpref = WeekPreference.objects.get(id=object_id)
-            if current_week > weekpref.week or not student.active:
+            if not has_edit_permission(request=request, obj=weekpref):
                 extra_context["show_save"] = False
                 extra_context["show_save_and_continue"] = False
                 extra_context["show_save_and_add_another"] = False
diff --git a/cntmanage/flightslot/custom/student_permissions.py b/cntmanage/flightslot/custom/student_permissions.py
new file mode 100644
index 0000000..d995526
--- /dev/null
+++ b/cntmanage/flightslot/custom/student_permissions.py
@@ -0,0 +1,17 @@
+
+from django.http import HttpRequest
+from ..models.students import Student
+from ..models.weekpref import WeekPreference
+
+from datetime import date
+
+# allow add, modify, delete depending on a set of requirements
+def has_edit_permission(request: HttpRequest, obj: WeekPreference | None = None) -> bool:
+    if hasattr(request.user, 'student'):
+        student: Student = request.user.student
+        if not student.active:
+            return False
+        current_week: int = date.today().isocalendar().week
+        if obj and current_week > obj.week or not student.active:
+            return False
+    return True