diff --git a/Domain/Schedule/Day.cs b/Domain/Schedule/Day.cs
deleted file mode 100644
index 0da9657..0000000
--- a/Domain/Schedule/Day.cs
+++ /dev/null
@@ -1,15 +0,0 @@
-using System;
-
-namespace Mirea.Api.DataAccess.Domain.Schedule;
-
-public class Day
-{
-    public int Id { get; set; }
-    public DayOfWeek Index { get; set; }
-    public int PairNumber { get; set; }
-
-    public int LessonId { get; set; }
-    public Lesson? Lesson { get; set; }
-    public int GroupId { get; set; }
-    public Group? Group { get; set; }
-}
\ No newline at end of file
diff --git a/Domain/Schedule/Lesson.cs b/Domain/Schedule/Lesson.cs
index 0851f0e..3ff5e52 100644
--- a/Domain/Schedule/Lesson.cs
+++ b/Domain/Schedule/Lesson.cs
@@ -1,4 +1,5 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
 
 namespace Mirea.Api.DataAccess.Domain.Schedule;
 
@@ -6,9 +7,15 @@ public class Lesson
 {
     public int Id { get; set; }
     public bool IsEven { get; set; }
-    public required string Discipline { get; set; }
+    public DayOfWeek DayOfWeek { get; set; }
+    public int PairNumber { get; set; }
 
-    public List<LessonToTypeOfOccupation>? TypeOfOccupations { get; set; }
-    public List<ProfessorToLesson>? ProfessorToLesson { get; set; }
-    public Day? Day { get; set; }
+    public int GroupId { get; set; }
+    public Group? Group { get; set; }
+    public int TypeOfOccupationId { get; set; }
+    public TypeOfOccupation? TypeOfOccupation { get; set; }
+    public int DisciplineId { get; set; }
+    public Discipline? Discipline { get; set; }
+
+    public List<LessonAssociation>? LessonAssociations { get; set; }
 }
\ No newline at end of file