diff --git a/UniversityContracts/BusinessLogicContracts/IDocumentLogic.cs b/UniversityContracts/BusinessLogicContracts/IDocumentLogic.cs
new file mode 100644
index 0000000..ac651b1
--- /dev/null
+++ b/UniversityContracts/BusinessLogicContracts/IDocumentLogic.cs
@@ -0,0 +1,18 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using UniversityContracts.BindingModels;
+
+namespace UniversityContracts.BusinessLogicContracts
+{
+    public interface IDocumentLogic
+    {
+        bool Create(DocumentBindingModel model);
+        bool Update(DocumentBindingModel model);
+        bool Delete(DocumentBindingModel model);
+        List<DocumentViewModel>? ReadList(DocumentSearchModel? model);
+        DocumentViewModel? ReadElement(DocumentSearchModel model);
+    }
+}
diff --git a/UniversityContracts/BusinessLogicContracts/IEducationStatusLogic.cs b/UniversityContracts/BusinessLogicContracts/IEducationStatusLogic.cs
new file mode 100644
index 0000000..1d339a3
--- /dev/null
+++ b/UniversityContracts/BusinessLogicContracts/IEducationStatusLogic.cs
@@ -0,0 +1,18 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using UniversityContracts.BindingModels;
+
+namespace UniversityContracts.BusinessLogicContracts
+{
+    public interface IEducationStatusLogic
+    {
+        bool Create(EducationStatusBindingModel model);
+        bool Update(EducationStatusBindingModel model);
+        bool Delete(EducationStatusBindingModel model);
+        List<EducationStatusViewModel>? ReadList(EducationStatusSearchModel? model);
+        EducationStatusViewModel? ReadElement(EducationStatusSearchModel model);
+    }
+}
diff --git a/UniversityContracts/BusinessLogicContracts/IStudentLogic.cs b/UniversityContracts/BusinessLogicContracts/IStudentLogic.cs
new file mode 100644
index 0000000..5fa5e19
--- /dev/null
+++ b/UniversityContracts/BusinessLogicContracts/IStudentLogic.cs
@@ -0,0 +1,18 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using UniversityContracts.BindingModels;
+
+namespace UniversityContracts.BusinessLogicContracts
+{
+    internal interface IStudentLogic
+    {
+        bool Create(StudentBindingModel model);
+        bool Update(StudentBindingModel model);
+        bool Delete(StudentBindingModel model);
+        List<StudentViewModel>? ReadList(StudentSearchModel? model);
+        StudentViewModel? ReadElement(StudentSearchModel model);
+    }
+}
diff --git a/UniversityContracts/UniversityContracts.csproj b/UniversityContracts/UniversityContracts.csproj
index c1544ba..c2d3b05 100644
--- a/UniversityContracts/UniversityContracts.csproj
+++ b/UniversityContracts/UniversityContracts.csproj
@@ -7,7 +7,6 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <Folder Include="BusinessLogicContracts\" />
     <Folder Include="SearchModels\" />
     <Folder Include="StoragesContracts\" />
     <Folder Include="ViewModels\" />