diff --git a/app/Http/Controllers/Admin/PrelimDefinitionController.php b/app/Http/Controllers/Admin/PrelimDefinitionController.php
index e7bb25b..cd094c5 100644
--- a/app/Http/Controllers/Admin/PrelimDefinitionController.php
+++ b/app/Http/Controllers/Admin/PrelimDefinitionController.php
@@ -25,9 +25,11 @@ class PrelimDefinitionController extends Controller
         $auditions = Audition::doesntHave('prelimDefinition')->get();
         $rooms = Room::all();
         $guides = ScoringGuide::all();
-        $action = 'create';
+        $method = 'POST';
+        $action = route('admin.prelim_definitions.store');
+        $prelim = false;
 
-        return view('admin.prelim_definitions.createOrUpdate', compact('auditions', 'rooms', 'guides', 'action'));
+        return view('admin.prelim_definitions.createOrUpdate', compact('auditions', 'rooms', 'guides', 'method', 'action', 'prelim'));
     }
 
     public function store(PrelimDefinitionStoreOrUpdateRequest $request)
@@ -35,11 +37,27 @@ class PrelimDefinitionController extends Controller
         $validated = $request->validated();
         PrelimDefinition::create($validated);
 
-        return redirect()->route('admin.prelim_definitions.index');
+        return redirect()->route('admin.prelim_definitions.index')->with('success', 'Prelim definition created');
     }
 
     public function edit(PrelimDefinition $prelimDefinition)
     {
+        $auditions = Audition::doesntHave('prelimDefinition')->get();
+        $rooms = Room::all();
+        $guides = ScoringGuide::all();
+        $method = 'PATCH';
+        $action = route('admin.prelim_definitions.update', $prelimDefinition);
+        $prelim = $prelimDefinition;
+
+        return view('admin.prelim_definitions.createOrUpdate', compact('auditions', 'rooms', 'guides', 'method', 'action', 'prelim'));
 
     }
+
+    public function update(PrelimDefinition $prelimDefinition, PrelimDefinitionStoreOrUpdateRequest $request)
+    {
+        $validated = $request->validated();
+        $prelimDefinition->update($validated);
+
+        return redirect()->route('admin.prelim_definitions.index')->with('success', 'Prelim definition updated');
+    }
 }
diff --git a/resources/views/admin/prelim_definitions/createOrUpdate.blade.php b/resources/views/admin/prelim_definitions/createOrUpdate.blade.php
index be14659..ed620b0 100644
--- a/resources/views/admin/prelim_definitions/createOrUpdate.blade.php
+++ b/resources/views/admin/prelim_definitions/createOrUpdate.blade.php
@@ -2,16 +2,28 @@
     <x-slot:page_title>Manage Prelim Auditions</x-slot:page_title>
     <div class="max-w-lg mx-auto">
         <x-card.card class="pb-5">
-            <x-card.heading>Create Prelim Audition</x-card.heading>
+            <x-card.heading>
+                @if($prelim)
+                    Modify Prelim - {{ $prelim->audition->name }}
+                @else
+                    Create Prelim Audition
+                @endif
+            </x-card.heading>
+
+            <x-form.form method="{{ $method }}" action="{{ $action }}"
+                         x-data="{ canSubmit: {{ ! $prelim ? 'false':'true' }} }">
 
-            <x-form.form method="POST" action="{{ route('admin.prelim_definitions.store') }}"
-                         x-data="{ canSubmit: false }">
                 <x-form.select name="audition_id" @change="canSubmit = true">
                     <x-slot:label>Audition</x-slot:label>
-                    <option value="" :disabled="canSubmit">Choose Audition</option>
-                    @foreach($auditions as $audition)
-                        <option value="{{ $audition->id }}">{{ $audition->name }}</option>
-                    @endforeach
+                    @if($prelim)
+                        <option value="{{ $prelim->audition_id }}">{{ $prelim->audition->name }}</option>
+                    @else
+                        <option value="" :disabled="canSubmit">Choose Audition</option>
+                        @foreach($auditions as $audition)
+                            <option value="{{ $audition->id }}">{{ $audition->name }}</option>
+                        @endforeach
+                    @endif
+
                 </x-form.select>
                 @error('audition_id')
                 <div class="text-red-500 text-sm">{{ $message }}</div>
@@ -20,7 +32,7 @@
                 <x-form.select name="room_id">
                     <x-slot:label>Room</x-slot:label>
                     @foreach($rooms as $room)
-                        <option value="{{ $room->id }}">{{ $room->name }}</option>
+                        <option value="{{ $room->id }}" @if($prelim && $prelim->room_id == $room->id) SELECTED @endif>{{ $room->name }}</option>
                     @endforeach
                 </x-form.select>
                 @error('room_id')
@@ -30,16 +42,17 @@
                 <x-form.select name="scoring_guide_id">
                     <x-slot:label>Scoring Guide</x-slot:label>
                     @foreach($guides as $guide)
-                        <option value="{{ $guide->id }}">{{ $guide->name }}</option>
+                        <option value="{{ $guide->id }}" @if($prelim && $prelim->scoring_guide_id == $guide->id) SELECTED @endif>{{ $guide->name }}</option>
                     @endforeach
                 </x-form.select>
                 @error('scoring_guide_id')
                 <div class="text-red-500 text-sm">{{ $message }}</div>
                 @enderror
 
-                <x-form.field name="passing_score" type="number" max="100" min="0" step="0.1" value=60 label_text="Passing Score" />
+                <x-form.field name="passing_score" type="number" max="100" min="0" step="0.1" :value=" $prelim ? $prelim->passing_score : 60"
+                              label_text="Passing Score"/>
 
-                <x-form.footer submit-button-text="Create Prelim Audition" x-show="canSubmit" x-cloak></x-form.footer>
+                <x-form.footer submit-button-text="{{ ! $prelim ? 'Create Prelim Audition':'Modify Prelim Audition' }}" x-show="canSubmit" x-cloak></x-form.footer>
 
             </x-form.form>
         </x-card.card>
diff --git a/routes/admin.php b/routes/admin.php
index d5e505a..54bee53 100644
--- a/routes/admin.php
+++ b/routes/admin.php
@@ -211,6 +211,7 @@ Route::middleware(['auth', 'verified', CheckIfAdmin::class])->prefix('admin/')->
         Route::get('/new', 'create')->name('admin.prelim_definitions.create');
         Route::post('/', 'store')->name('admin.prelim_definitions.store');
         Route::get('/{prelimDefinition}', 'edit')->name('admin.prelim_definitions.edit');
+        Route::patch('/{prelimDefinition}', 'update')->name('admin.prelim_definitions.update');
         Route::delete('/{prelimDefinition}', 'destroy')->name('admin.prelim_definitions.destroy');
     });
 });
diff --git a/tests/Feature/app/Http/Controllers/Admin/PrelimDefinitionControllerTest.php b/tests/Feature/app/Http/Controllers/Admin/PrelimDefinitionControllerTest.php
index 06db972..3b7dd2b 100644
--- a/tests/Feature/app/Http/Controllers/Admin/PrelimDefinitionControllerTest.php
+++ b/tests/Feature/app/Http/Controllers/Admin/PrelimDefinitionControllerTest.php
@@ -88,3 +88,61 @@ describe('PrelimDefinitionController::store', function () {
             ->assertRedirect(route('admin.prelim_definitions.create'));
     });
 });
+
+describe('PrelimDefinitionController::edit', function () {
+    beforeEach(function () {
+        $this->audition = Audition::factory()->create();
+        $this->prelim = PrelimDefinition::create([
+            'audition_id' => $this->audition->id,
+            'room_id' => 0,
+            'scoring_guide_id' => 0,
+            'passing_score' => 75,
+        ]);
+    });
+    it('denies access to a non-admin user', function () {
+        $this->get(route('admin.prelim_definitions.edit', $this->prelim))->assertRedirect(route('home'));
+        actAsNormal();
+        $this->get(route('admin.prelim_definitions.edit', $this->prelim))->assertRedirect(route('dashboard'));
+        actAsTab();
+        $this->get(route('admin.prelim_definitions.edit', $this->prelim))->assertRedirect(route('dashboard'));
+    });
+    it('shows a form to edit a prelim definition', function () {
+        actAsAdmin();
+        $response = $this->get(route('admin.prelim_definitions.edit', $this->prelim))
+            ->assertViewIs('admin.prelim_definitions.createOrUpdate')
+            ->assertSee($this->audition->name)
+            ->assertSee('PATCH')
+            ->assertSee(route('admin.prelim_definitions.update', $this->prelim));
+    });
+});
+
+describe('PrelimDefinitionController::update', function () {
+    beforeEach(function () {
+        $this->audition = Audition::factory()->create();
+        $this->prelim = PrelimDefinition::create([
+            'audition_id' => $this->audition->id,
+            'room_id' => 0,
+            'scoring_guide_id' => 0,
+            'passing_score' => 75,
+        ]);
+    });
+    it('denies access to a non-admin user', function () {
+        $this->patch(route('admin.prelim_definitions.update', $this->prelim))->assertRedirect(route('home'));
+        actAsNormal();
+        $this->patch(route('admin.prelim_definitions.update', $this->prelim))->assertRedirect(route('dashboard'));
+        actAsTab();
+        $this->patch(route('admin.prelim_definitions.update', $this->prelim))->assertRedirect(route('dashboard'));
+    });
+    it('can update a prelim definition', function () {
+        actAsAdmin();
+        $response = $this->patch(route('admin.prelim_definitions.update', $this->prelim), [
+            'audition_id' => $this->audition->id,
+            'room_id' => 0,
+            'scoring_guide_id' => 0,
+            'passing_score' => 90,
+        ]);
+        $response
+            ->assertRedirect(route('admin.prelim_definitions.index'));
+        expect($this->prelim->fresh()->passing_score)->toEqual(90);
+    });
+});