diff --git a/School/SchoolContracts/StoragesContracts/ICircleStorage.cs b/School/SchoolContracts/StoragesContracts/ICircleStorage.cs
new file mode 100644
index 0000000..989f8b1
--- /dev/null
+++ b/School/SchoolContracts/StoragesContracts/ICircleStorage.cs
@@ -0,0 +1,20 @@
+using SchoolContracts.BindingModel;
+using SchoolContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SchoolContracts.StoragesContracts
+{
+    public interface ICircleStorage
+    {
+        List<CircleViewModel> GetFullList();
+        List<CircleViewModel> GetFilteredList(CircleBindingModel model);
+        CircleViewModel GetElement(CircleBindingModel model);
+		CircleViewModel? Insert(CircleBindingModel model);
+		CircleViewModel? Update(CircleBindingModel model);
+		CircleViewModel? Delete(CircleBindingModel model);
+    }
+}
diff --git a/School/SchoolContracts/StoragesContracts/IClientStorage.cs b/School/SchoolContracts/StoragesContracts/IClientStorage.cs
new file mode 100644
index 0000000..18e27c4
--- /dev/null
+++ b/School/SchoolContracts/StoragesContracts/IClientStorage.cs
@@ -0,0 +1,20 @@
+using SchoolContracts.BindingModel;
+using SchoolContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SchoolContracts.StoragesContracts
+{
+    public interface IClientStorage
+    {
+        List<ClientViewModel> GetFullList();
+        List<ClientViewModel> GetFilteredList(ClientBindingModel model);
+        ClientViewModel GetElement(ClientBindingModel model);
+		ClientViewModel? Insert(ClientBindingModel model);
+		ClientViewModel? Update(ClientBindingModel model);
+		ClientViewModel? Delete(ClientBindingModel model);
+    }
+}
diff --git a/School/SchoolContracts/StoragesContracts/IEmployeeStorage.cs b/School/SchoolContracts/StoragesContracts/IEmployeeStorage.cs
new file mode 100644
index 0000000..0cb0857
--- /dev/null
+++ b/School/SchoolContracts/StoragesContracts/IEmployeeStorage.cs
@@ -0,0 +1,21 @@
+using SchoolContracts.BindingModel;
+using SchoolContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SchoolContracts.StoragesContracts
+{
+    public interface IEmployeeStorage
+    {
+        List<EmployeeViewModel> GetFullList();
+        List<EmployeeViewModel> GetFilteredList(EmployeeBindingModel model);
+        EmployeeViewModel GetElement(EmployeeBindingModel model);
+        EmployeeViewModel? Insert(EmployeeBindingModel model); 
+        EmployeeViewModel? Update(EmployeeBindingModel model); 
+        EmployeeViewModel? Delete(EmployeeBindingModel model);
+    }
+
+}
diff --git a/School/SchoolContracts/StoragesContracts/ILessonStorage.cs b/School/SchoolContracts/StoragesContracts/ILessonStorage.cs
new file mode 100644
index 0000000..35ca7bc
--- /dev/null
+++ b/School/SchoolContracts/StoragesContracts/ILessonStorage.cs
@@ -0,0 +1,20 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using SchoolContracts.BindingModel;
+using SchoolContracts.ViewModels;
+
+namespace SchoolContracts.StoragesContracts
+{
+    public interface ILessonStorage
+    {
+        List<LessonViewModel> GetFullList();
+        List<LessonViewModel> GetFilteredList(LessonBindingModel model);
+        LessonViewModel GetElement(LessonBindingModel model);
+        LessonViewModel? Insert(LessonBindingModel model); 
+        LessonViewModel? Update(LessonBindingModel model); 
+        LessonViewModel? Delete(LessonBindingModel model);
+    }
+}
diff --git a/School/SchoolContracts/StoragesContracts/IPaymentStorage.cs b/School/SchoolContracts/StoragesContracts/IPaymentStorage.cs
new file mode 100644
index 0000000..bbfe3e3
--- /dev/null
+++ b/School/SchoolContracts/StoragesContracts/IPaymentStorage.cs
@@ -0,0 +1,23 @@
+using SchoolContracts.BindingModel;
+using SchoolContracts.BindingModels;
+using SchoolContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SchoolContracts.StoragesContracts
+{
+    public interface IPaymentStorage
+    {
+        List<PaymentViewModel> GetFullList();
+        List<PaymentViewModel> GetFilteredList(PaymentBindingModel model);
+        PaymentViewModel GetElement(PaymentBindingModel model);
+		PaymentViewModel? Insert(PaymentBindingModel model);
+		PaymentViewModel? Update(PaymentBindingModel model);
+        PaymentViewModel GetElementFirstLast(PaymentDateBindingModel model);
+		PaymentViewModel? Delete(PaymentBindingModel model);
+    }
+
+}
diff --git a/School/SchoolContracts/ViewModels/ReportCircleLessonViewModel.cs b/School/SchoolContracts/ViewModels/ReportCircleLessonViewModel.cs
index 9720f6d..3492d07 100644
--- a/School/SchoolContracts/ViewModels/ReportCircleLessonViewModel.cs
+++ b/School/SchoolContracts/ViewModels/ReportCircleLessonViewModel.cs
@@ -8,7 +8,7 @@ namespace SchoolContracts.ViewModels
 {
 	public class ReportCircleLessonViewModel
 	{
-		public DateTime? CircleDate { get; set; }
+		public DateTime? StartDate { get; set; }
 		public List<string> Lessons { get; set; }
 		public int TotalCount { get; set; }
 	}