diff --git a/generic/urls.py b/generic/urls.py
index 77cf91fb..444b8e92 100755
--- a/generic/urls.py
+++ b/generic/urls.py
@@ -39,6 +39,11 @@ urlpatterns = [
         views.generic_exam_htmx,
         name="generic_exam_htmx",
     ),
+    path(
+        "generic_exam_set_open_access",
+        views.generic_exam_set_open_access,
+        name="generic_exam_set_open_access",
+    ),
     path("bulk_delete_questions/", views.bulk_delete_questions, name="bulk_delete_questions"),
     path(
         "examination-autocomplete",
diff --git a/generic/views.py b/generic/views.py
index f7f73b14..cb43c3e8 100644
--- a/generic/views.py
+++ b/generic/views.py
@@ -635,6 +635,71 @@ def generic_exam_htmx(request):
     return HttpResponse(status=405)
 
 
+@login_required
+def generic_exam_set_open_access(request):
+    """HTMX endpoint to set open_access on questions in an exam.
+
+    POST params:
+      - type: app name (sbas, rapids, anatomy, physics, shorts, longs)
+      - exam_id: id of the exam
+      - set_open_access: 'true' or 'false'
+      - selection / selection[]: optional list of question ids to apply to (if omitted apply to all)
+
+    Only questions that request.user can edit (question.can_edit(user)) or superusers will be modified.
+    Returns a small HTML fragment summarising the count of changed questions.
+    """
+    if request.method != "POST":
+        return HttpResponse(status=405)
+
+    question_type = request.POST.get("type")
+    if not question_type:
+        return JsonResponse({"status": "error", "message": "missing type"}, status=400)
+
+    try:
+        Exam = get_exam_model_from_app_name(question_type)
+    except Exception:
+        return JsonResponse({"status": "error", "message": "unknown type"}, status=400)
+
+    exam = get_object_or_404(Exam, pk=request.POST.get("exam_id"))
+
+    # permission to edit exam required
+    # Many exam edits are limited to exam authors / checkers; reuse existing check where possible
+    # For now require the user to have edit access (ExamViews.check_user_edit_access equivalent)
+    # We'll do a lightweight check: if user is superuser OR user in exam.get_author_objects()
+    if not (request.user.is_superuser or request.user in exam.get_author_objects()):
+        return HttpResponse(format_html('<div class="alert alert-danger">Permission denied</div>'))
+
+    set_val = True if request.POST.get("set_open_access") == "true" else False
+
+    sel = request.POST.getlist("selection") or request.POST.getlist("selection[]")
+    if sel:
+        try:
+            ids = [int(s) for s in sel]
+        except Exception:
+            ids = []
+        qs = exam.exam_questions.filter(pk__in=ids)
+    else:
+        qs = exam.exam_questions.all()
+
+    changed = 0
+    for q in qs:
+        try:
+            # prefer per-question permission check if available
+            can_edit = request.user.is_superuser or getattr(q, 'can_edit', lambda u: False)(request.user)
+        except Exception:
+            can_edit = request.user.is_superuser
+
+        if not can_edit:
+            continue
+
+        if q.open_access != set_val:
+            q.open_access = set_val
+            q.save()
+            changed += 1
+
+    return render(request, "generic/partials/set_open_access_result.html", {"changed": changed, "exam": exam, "state": set_val})
+
+
 class ExamViews(View, LoginRequiredMixin):
     def __init__(
         self,
diff --git a/templates/generic/partials/set_open_access_result.html b/templates/generic/partials/set_open_access_result.html
new file mode 100644
index 00000000..d64503b3
--- /dev/null
+++ b/templates/generic/partials/set_open_access_result.html
@@ -0,0 +1,10 @@
+<div class="alert alert-info">
+  {% if changed %}
+    Updated {{ changed }} question{{ changed|pluralize }} in "{{ exam.name }}". Open access set to {{ state|yesno:"true,false" }}.
+  {% else %}
+    No questions were updated.
+  {% endif %}
+  <div class="mt-2">
+    <button class="btn btn-sm btn-secondary" type="button" onclick="document.querySelector('#action-result').innerHTML='';">Close</button>
+  </div>
+</div>