diff --git a/StudentProgress/StudentProgress/Entities/Enums/Course.cs b/StudentProgress/StudentProgress/Entities/Enums/Course.cs
new file mode 100644
index 0000000..e04ffaf
--- /dev/null
+++ b/StudentProgress/StudentProgress/Entities/Enums/Course.cs
@@ -0,0 +1,11 @@
+namespace StudentProgress.Entities.Enums;
+
+[Flags]
+public enum Course
+{
+    None,
+    First = 1, // 1 курс
+    Second = 2, // 2 курс
+    Third = 4, // 3 курс
+    Fourth = 8 // 4 курс
+}
\ No newline at end of file
diff --git a/StudentProgress/StudentProgress/Entities/Enums/DisLectE.cs b/StudentProgress/StudentProgress/Entities/Enums/DisLectE.cs
deleted file mode 100644
index 952a150..0000000
--- a/StudentProgress/StudentProgress/Entities/Enums/DisLectE.cs
+++ /dev/null
@@ -1,9 +0,0 @@
-namespace StudentProgress.Entities.Enums;
-
-public enum DisLectE
-{
-    None = 0,
-    Praktika = 1,
-    Lecturer = 2,
-    Labaratory = 3
-}
\ No newline at end of file
diff --git a/StudentProgress/StudentProgress/Entities/Enums/Grade.cs b/StudentProgress/StudentProgress/Entities/Enums/Grade.cs
index cdad9ee..817c5ee 100644
--- a/StudentProgress/StudentProgress/Entities/Enums/Grade.cs
+++ b/StudentProgress/StudentProgress/Entities/Enums/Grade.cs
@@ -8,10 +8,10 @@ namespace StudentProgress.Entities.Enums;
 
 public enum Grade
 {
-    None = 0, //пересдача
-    Two = 1,
-    Three = 2,
-    Four = 3,
-    Five = 4,
-    Zachet = 5
+    None,
+    One = 1,
+    Two = 2,
+    Three = 3,
+    Four = 4,
+    Five = 5,
 }
diff --git a/StudentProgress/StudentProgress/Entities/Enums/TypeOfWork.cs b/StudentProgress/StudentProgress/Entities/Enums/TypeOfWork.cs
deleted file mode 100644
index ace312a..0000000
--- a/StudentProgress/StudentProgress/Entities/Enums/TypeOfWork.cs
+++ /dev/null
@@ -1,10 +0,0 @@
-namespace StudentProgress.Entities.Enums;
-[Flags]
-public enum TypeOfWork
-{
-    None = 0, //неизвестная работа
-    Exam = 1,
-    Zachet = 2,
-    Referat = 4,
-    Laba = 8,
-}
\ No newline at end of file
diff --git a/StudentProgress/StudentProgress/Entities/Grades.cs b/StudentProgress/StudentProgress/Entities/Grades.cs
index 7d77a90..7b89070 100644
--- a/StudentProgress/StudentProgress/Entities/Grades.cs
+++ b/StudentProgress/StudentProgress/Entities/Grades.cs
@@ -6,15 +6,28 @@ public class Grades
     public int SubjectsId { get; private set; }
     public int ProfessorsId { get; private set; }
     public DateTime Date { get; private set; }
-
-    public static Grades CreateEntity(int id, int subjectsId, int professorsId, DateTime date)
+    public IEnumerable<StudentGrades> StudentGrade { get; private set; } = [];
+    public static Grades CreateEntity(int id, int subjectsId, int professorsId, DateTime date, IEnumerable<StudentGrades> studentGrades)
     {
         return new Grades
         {
             Id = id,
             SubjectsId = subjectsId,
             ProfessorsId = professorsId,
-            Date = date
+            Date = date,
+            StudentGrade = studentGrades
+        };
+    }
+
+    public static Grades CreateEntity(TempStudentGrades tempStudentGrades, IEnumerable<StudentGrades> studentGrades)
+    {
+        return new Grades
+        {
+            Id = tempStudentGrades.Id,
+            SubjectsId = tempStudentGrades.SubjectsId,
+            ProfessorsId = tempStudentGrades.ProfessorsId,
+            Date = tempStudentGrades.Date,
+            StudentGrade = studentGrades
         };
     }
 }
diff --git a/StudentProgress/StudentProgress/Entities/Group.cs b/StudentProgress/StudentProgress/Entities/Group.cs
index 8f88960..91ef307 100644
--- a/StudentProgress/StudentProgress/Entities/Group.cs
+++ b/StudentProgress/StudentProgress/Entities/Group.cs
@@ -1,17 +1,16 @@
-namespace StudentProgress.Entities
-{
-    public class Group
-    {
-        public int Id { get; private set; }
-        public string NameGroup { get; set; } = string.Empty;
+namespace StudentProgress.Entities;
 
-        public static Group CreateEntity(int id, string nameGroup)
+public class Group
+{
+    public int Id { get; private set; }
+    public string NameGroup { get; set; } = string.Empty;
+
+    public static Group CreateEntity(int id, string nameGroup)
+    {
+        return new Group
         {
-            return new Group
-            {
-                Id = id,
-                NameGroup = nameGroup ?? string.Empty
-            };
-        }
+            Id = id,
+            NameGroup = nameGroup ?? string.Empty
+        };
     }
 }
\ No newline at end of file
diff --git a/StudentProgress/StudentProgress/Entities/Lectures.cs b/StudentProgress/StudentProgress/Entities/Lectures.cs
index 0011c5c..f52bd7f 100644
--- a/StudentProgress/StudentProgress/Entities/Lectures.cs
+++ b/StudentProgress/StudentProgress/Entities/Lectures.cs
@@ -1,35 +1,19 @@
-namespace StudentProgress.Entities
+namespace StudentProgress.Entities;
+
+public class Lectures
 {
-    public class Lectures
+    public int Id { get; private set; }
+    public int ProfessorsId { get; private set; }
+    public DateTime Date { get; private set; }
+    public string Auditorium { get; private set; } = string.Empty;
+    public static Lectures CreateElement(int id, int professorsId, DateTime date, string auditorium)
     {
-        public int LectureId { get; private set; }
-        public int ProfessorsId { get; private set; }
-        public DateTime Date { get; private set; }
-        public string Auditorium { get; private set; }
-
-        public Lectures()
+        return new Lectures
         {
-            Auditorium = string.Empty; // Инициализация свойства Auditorium
-        }
-
-        public void SetProfessorsId(int professorsId)
-        {
-            ProfessorsId = professorsId;
-        }
-
-        public void SetDate(DateTime date)
-        {
-            Date = date;
-        }
-
-        public void SetLectureId(int lectureId)
-        {
-            LectureId = lectureId;
-        }
-
-        public void SetAuditorium(string auditorium)
-        {
-            Auditorium = auditorium;
-        }
+            Id = id,
+            Date = date,
+            Auditorium = auditorium,
+            ProfessorsId = professorsId,
+        };
     }
 }
\ No newline at end of file
diff --git a/StudentProgress/StudentProgress/Entities/Professors.cs b/StudentProgress/StudentProgress/Entities/Professors.cs
index 44584d4..fb964ba 100644
--- a/StudentProgress/StudentProgress/Entities/Professors.cs
+++ b/StudentProgress/StudentProgress/Entities/Professors.cs
@@ -3,15 +3,15 @@
 public class Professors
 {
     public int Id { get; set; }
-    public string FirstNameProfessor { get; set; } = string.Empty;
-    public string SurnameProfessor { get; set; } = string.Empty;
-    public static Professors CreateEntity(int id, string firstName, string SurnameProfessor)
+    public string FirstName { get; set; } = string.Empty;
+    public string Surname { get; set; } = string.Empty;
+    public static Professors CreateEntity(int id, string firstName, string surname)
     {
         return new Professors
         {
             Id = id,
-            FirstNameProfessor = firstName ?? string.Empty,
-            SurnameProfessor = SurnameProfessor ?? string.Empty
+            FirstName = firstName ?? string.Empty,
+            Surname = surname ?? string.Empty
         };
     }
 }
\ No newline at end of file
diff --git a/StudentProgress/StudentProgress/Entities/Student.cs b/StudentProgress/StudentProgress/Entities/Student.cs
index 564c195..000b6a6 100644
--- a/StudentProgress/StudentProgress/Entities/Student.cs
+++ b/StudentProgress/StudentProgress/Entities/Student.cs
@@ -1,21 +1,20 @@
-namespace StudentProgress.Entities
-{
-    public class Student
-    {
-        public int Id { get; private set; }
-        public string Name { get; set; } = string.Empty;
-        public string Surname { get; set; } = string.Empty;
-        public int GroupId { get; set; }
+namespace StudentProgress.Entities;
 
-        public static Student CreateEntity(int id, string name, string surname, int groupId)
+public class Student
+{
+    public int Id { get; private set; }
+    public string Name { get; set; } = string.Empty;
+    public string Surname { get; set; } = string.Empty;
+    public int GroupId { get; set; }
+
+    public static Student CreateEntity(int id, string name, string surname, int groupId)
+    {
+        return new Student
         {
-            return new Student
-            {
-                Id = id,
-                Name = name ?? string.Empty,
-                Surname = surname ?? string.Empty,
-                GroupId = groupId
-            };
-        }
+            Id = id,
+            Name = name ?? string.Empty,
+            Surname = surname ?? string.Empty,
+            GroupId = groupId
+        };
     }
 }
\ No newline at end of file
diff --git a/StudentProgress/StudentProgress/Entities/Subjects.cs b/StudentProgress/StudentProgress/Entities/Subjects.cs
index 2e68186..30bb035 100644
--- a/StudentProgress/StudentProgress/Entities/Subjects.cs
+++ b/StudentProgress/StudentProgress/Entities/Subjects.cs
@@ -1,17 +1,20 @@
-namespace StudentProgress.Entities;
+using Microsoft.VisualBasic.Devices;
+using StudentProgress.Entities.Enums;
+
+namespace StudentProgress.Entities;
 
 public class Subjects
 {
     public int Id { get; private set; }
     public string NameSubject { get; private set; } = string.Empty;
-
-    public static Subjects CreateEntity_(int id, string nameSubject)
+    public Course Course { get; private set; }
+    public static Subjects CreateEntity_(int id, string nameSubject, Course course)
     {
         return new Subjects
         {
             Id = id,
             NameSubject = nameSubject ?? string.Empty,
-            
+            Course = course
         };
     }
 }
\ No newline at end of file
diff --git a/StudentProgress/StudentProgress/Entities/TempStudentGrades.cs b/StudentProgress/StudentProgress/Entities/TempStudentGrades.cs
new file mode 100644
index 0000000..c6d6b18
--- /dev/null
+++ b/StudentProgress/StudentProgress/Entities/TempStudentGrades.cs
@@ -0,0 +1,18 @@
+using StudentProgress.Entities.Enums;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StudentProgress.Entities;
+
+public class TempStudentGrades
+{
+    public int Id { get; private set; }
+    public int SubjectsId { get; private set; }
+    public int ProfessorsId { get; private set; }
+    public DateTime Date { get; private set; }
+    public int StudentID { get; private set; }
+    public Grade Grade { get; private set; }
+}
diff --git a/StudentProgress/StudentProgress/Properties/Resources.Designer.cs b/StudentProgress/StudentProgress/Properties/Resources.Designer.cs
index 95bee35..ca5f13b 100644
--- a/StudentProgress/StudentProgress/Properties/Resources.Designer.cs
+++ b/StudentProgress/StudentProgress/Properties/Resources.Designer.cs
@@ -1,10 +1,10 @@
 //------------------------------------------------------------------------------
 // <auto-generated>
-//     This code was generated by a tool.
-//     Runtime Version:4.0.30319.42000
+//     Этот код создан программой.
+//     Исполняемая версия:4.0.30319.42000
 //
-//     Changes to this file may cause incorrect behavior and will be lost if
-//     the code is regenerated.
+//     Изменения в этом файле могут привести к неправильной работе и будут потеряны в случае
+//     повторной генерации кода.
 // </auto-generated>
 //------------------------------------------------------------------------------
 
@@ -13,12 +13,12 @@ namespace StudentProgress.Properties {
     
     
     /// <summary>
-    ///   A strongly-typed resource class, for looking up localized strings, etc.
+    ///   Класс ресурса со строгой типизацией для поиска локализованных строк и т.д.
     /// </summary>
-    // This class was auto-generated by the StronglyTypedResourceBuilder
-    // class via a tool like ResGen or Visual Studio.
-    // To add or remove a member, edit your .ResX file then rerun ResGen
-    // with the /str option, or rebuild your VS project.
+    // Этот класс создан автоматически классом StronglyTypedResourceBuilder
+    // с помощью такого средства, как ResGen или Visual Studio.
+    // Чтобы добавить или удалить член, измените файл .ResX и снова запустите ResGen
+    // с параметром /str или перестройте свой проект VS.
     [global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Resources.Tools.StronglyTypedResourceBuilder", "17.0.0.0")]
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
     [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
@@ -33,7 +33,7 @@ namespace StudentProgress.Properties {
         }
         
         /// <summary>
-        ///   Returns the cached ResourceManager instance used by this class.
+        ///   Возвращает кэшированный экземпляр ResourceManager, использованный этим классом.
         /// </summary>
         [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
         internal static global::System.Resources.ResourceManager ResourceManager {
@@ -47,8 +47,8 @@ namespace StudentProgress.Properties {
         }
         
         /// <summary>
-        ///   Overrides the current thread's CurrentUICulture property for all
-        ///   resource lookups using this strongly typed resource class.
+        ///   Перезаписывает свойство CurrentUICulture текущего потока для всех
+        ///   обращений к ресурсу с помощью этого класса ресурса со строгой типизацией.
         /// </summary>
         [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
         internal static global::System.Globalization.CultureInfo Culture {
@@ -61,7 +61,7 @@ namespace StudentProgress.Properties {
         }
         
         /// <summary>
-        ///   Looks up a localized resource of type System.Drawing.Bitmap.
+        ///   Поиск локализованного ресурса типа System.Drawing.Bitmap.
         /// </summary>
         internal static System.Drawing.Bitmap Add {
             get {
@@ -71,7 +71,7 @@ namespace StudentProgress.Properties {
         }
         
         /// <summary>
-        ///   Looks up a localized resource of type System.Drawing.Bitmap.
+        ///   Поиск локализованного ресурса типа System.Drawing.Bitmap.
         /// </summary>
         internal static System.Drawing.Bitmap BackGround {
             get {
@@ -81,7 +81,7 @@ namespace StudentProgress.Properties {
         }
         
         /// <summary>
-        ///   Looks up a localized resource of type System.Drawing.Bitmap.
+        ///   Поиск локализованного ресурса типа System.Drawing.Bitmap.
         /// </summary>
         internal static System.Drawing.Bitmap Del {
             get {
@@ -91,7 +91,7 @@ namespace StudentProgress.Properties {
         }
         
         /// <summary>
-        ///   Looks up a localized resource of type System.Drawing.Bitmap.
+        ///   Поиск локализованного ресурса типа System.Drawing.Bitmap.
         /// </summary>
         internal static System.Drawing.Bitmap Pencil {
             get {