diff --git a/Schedule ICTIS/Main/Views/CreatedClassView.swift b/Schedule ICTIS/Main/Views/CreatedClassView.swift
index 8fb56fa..e36cd8b 100644
--- a/Schedule ICTIS/Main/Views/CreatedClassView.swift	
+++ b/Schedule ICTIS/Main/Views/CreatedClassView.swift	
@@ -8,34 +8,38 @@
 import SwiftUI
 
 struct CreatedClassView: View {
-    let _class: ClassModel
+    @ObservedObject var _class: ClassModel
+    var provider = ClassProvider.shared
     var body: some View {
-        HStack(spacing: 10) {
-            VStack {
-                Text(getTimeString(_class.starttime))
-                    .font(.system(size: 15, weight: .regular))
-                Text(getTimeString(_class.endtime))
-                    .font(.system(size: 15, weight: .regular))
+        let existingCopy = try? provider.viewContext.existingObject(with: _class.objectID)
+        if let check = existingCopy {
+            HStack(spacing: 10) {
+                VStack {
+                    Text(getTimeString(_class.starttime))
+                        .font(.system(size: 15, weight: .regular))
+                    Text(getTimeString(_class.endtime))
+                        .font(.system(size: 15, weight: .regular))
+                }
+                .padding(.top, 7)
+                .padding(.bottom, 7)
+                .padding(.leading, 10)
+                Rectangle()
+                    .frame(width: 2)
+                    .frame(maxHeight: UIScreen.main.bounds.height - 18)
+                    .padding(.top, 7)
+                    .padding(.bottom, 7)
+                    .foregroundColor(_class.important ? Color("redForImportant") : onlineOrNot(_class.online))
+                Text(getSubjectName(_class.subject, _class.professor, _class.auditory))
+                    .font(.system(size: 18, weight: .regular))
+                    .padding(.top, 7)
+                    .padding(.bottom, 7)
+                Spacer()
             }
-            .padding(.top, 7)
-            .padding(.bottom, 7)
-            .padding(.leading, 10)
-            Rectangle()
-                .frame(width: 2)
-                .frame(maxHeight: UIScreen.main.bounds.height - 18)
-                .padding(.top, 7)
-                .padding(.bottom, 7)
-                .foregroundColor(_class.important ? Color("redForImportant") : onlineOrNot(_class.online))
-            Text(getSubjectName(_class.subject, _class.professor, _class.auditory))
-                .font(.system(size: 18, weight: .regular))
-                .padding(.top, 7)
-                .padding(.bottom, 7)
-            Spacer()
+            .frame(maxWidth: UIScreen.main.bounds.width - 40, maxHeight: 230)
+            .background(Color.white)
+            .cornerRadius(20)
+            .shadow(color: .black.opacity(0.25), radius: 4, x: 2, y: 2)
         }
-        .frame(maxWidth: UIScreen.main.bounds.width - 40, maxHeight: 230)
-        .background(Color.white)
-        .cornerRadius(20)
-        .shadow(color: .black.opacity(0.25), radius: 4, x: 2, y: 2)
     }
 }
 
diff --git a/Schedule ICTIS/Main/Views/ScheduleView.swift b/Schedule ICTIS/Main/Views/ScheduleView.swift
index 3725f72..ccc6f72 100644
--- a/Schedule ICTIS/Main/Views/ScheduleView.swift	
+++ b/Schedule ICTIS/Main/Views/ScheduleView.swift	
@@ -62,7 +62,6 @@ struct ScheduleView: View {
                                     CreatedClassView(_class: _class)
                                         .onTapGesture {
                                             selectedClass = _class
-                                            print(selectedClass)
                                         }
                                 }
                             }
diff --git a/Schedule ICTIS/Main/Views/Sheets/CreateEditClassView.swift b/Schedule ICTIS/Main/Views/Sheets/CreateEditClassView.swift
index a2894af..0dfeb73 100644
--- a/Schedule ICTIS/Main/Views/Sheets/CreateEditClassView.swift	
+++ b/Schedule ICTIS/Main/Views/Sheets/CreateEditClassView.swift	
@@ -141,10 +141,10 @@ struct CreateEditClassView: View {
                         Button {
                             do {
                                 try delete(vm._class)
+                                dismiss()
                             } catch {
                                 print(error)
                             }
-                            dismiss()
                         } label: {
                             HStack {
                                 Spacer()
@@ -194,7 +194,6 @@ struct CreateEditClassView: View {
                 try context.save()
             }
         }
-        
     }
 }
 
diff --git a/Schedule ICTIS/Provider/ClassProvider.swift b/Schedule ICTIS/Provider/ClassProvider.swift
index f88ea6f..c1c831c 100644
--- a/Schedule ICTIS/Provider/ClassProvider.swift	
+++ b/Schedule ICTIS/Provider/ClassProvider.swift	
@@ -24,7 +24,10 @@ final class ClassProvider {
     }
     
     var newContext: NSManagedObjectContext {
-        persistentContainer.newBackgroundContext()
+        //persistentContainer.newBackgroundContext()
+        let context = NSManagedObjectContext(concurrencyType: .mainQueueConcurrencyType)
+                context.persistentStoreCoordinator = persistentContainer.persistentStoreCoordinator
+                return context
     }
     
     private init() {