diff --git a/app/Filament/Pages/Learning/StudyGroup/Actions/SelectAllCoursesAction.php b/app/Filament/Pages/Learning/StudyGroup/Actions/SelectAllCoursesAction.php
new file mode 100644
index 0000000..ac4cd0b
--- /dev/null
+++ b/app/Filament/Pages/Learning/StudyGroup/Actions/SelectAllCoursesAction.php
@@ -0,0 +1,33 @@
+<?php
+
+namespace App\Filament\Pages\Learning\StudyGroup\Actions;
+
+use Filament\Actions\Action;
+use Filament\Forms\Components\Select;
+
+class SelectAllCoursesAction extends Action
+{
+    public static function getDefaultName(): ?string
+    {
+        return 'selectAllCourse';
+    }
+
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        $this
+            ->icon('heroicon-m-check-circle')
+            ->tooltip('Pilih/Hapus Semua Mata Kuliah')
+            ->action(function (Select $component) {
+                $options = array_keys($component->getOptions());
+                $state = $component->getState() ?? [];
+
+                if (count($state) === count($options)) {
+                    $component->state([]);
+                } else {
+                    $component->state($options);
+                }
+            });
+    }
+}
diff --git a/app/Filament/Pages/Learning/StudyGroup/Index.php b/app/Filament/Pages/Learning/StudyGroup/Index.php
index 4d2c2da..4932365 100644
--- a/app/Filament/Pages/Learning/StudyGroup/Index.php
+++ b/app/Filament/Pages/Learning/StudyGroup/Index.php
@@ -5,6 +5,7 @@
 use App\Filament\Pages\Learning\StudyGroup\Actions\CreateStudyGroupAction;
 use App\Filament\Pages\Learning\StudyGroup\Actions\DeleteStudyGroupAction;
 use App\Filament\Pages\Learning\StudyGroup\Actions\EditStudyGroupAction;
+use App\Filament\Pages\Learning\StudyGroup\Actions\SelectAllCoursesAction;
 use App\Models\Course;
 use App\Models\Student;
 use App\Models\StudyGroup;
@@ -171,7 +172,8 @@ public function studyGroupFormSchema(): array
                         ->searchable()
                         ->required()
                         ->live()
-                        ->columnSpanFull(),
+                        ->columnSpanFull()
+                        ->suffixAction(SelectAllCoursesAction::make()),
 
                     TextInput::make('name')
                         ->label('Nama Kelompok')