diff --git a/NotebookStudy.Core/NotebookStudy.Core.csproj b/NotebookStudy.Core/NotebookStudy.Core.csproj
new file mode 100644
index 0000000..cfadb03
--- /dev/null
+++ b/NotebookStudy.Core/NotebookStudy.Core.csproj
@@ -0,0 +1,9 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net7.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>
diff --git a/NotebookStudy.Core/Student.cs b/NotebookStudy.Core/Student.cs
new file mode 100644
index 0000000..6df437e
--- /dev/null
+++ b/NotebookStudy.Core/Student.cs
@@ -0,0 +1,12 @@
+namespace NotebookStudy.Core
+{
+    public class Student
+    {
+        public int Id { get; set; }
+
+        public string Name { get; set; }
+
+        public int Age { get; set; }
+
+    }
+}
diff --git a/NotebookStudy.Test/NotebookStudy.Test.csproj b/NotebookStudy.Test/NotebookStudy.Test.csproj
index d7ced07..398b286 100644
--- a/NotebookStudy.Test/NotebookStudy.Test.csproj
+++ b/NotebookStudy.Test/NotebookStudy.Test.csproj
@@ -22,4 +22,8 @@
     </PackageReference>
   </ItemGroup>
 
+  <ItemGroup>
+    <ProjectReference Include="..\NotebookStudy.Core\NotebookStudy.Core.csproj" />
+  </ItemGroup>
+
 </Project>
diff --git a/NotebookStudy.sln b/NotebookStudy.sln
index 6484de3..e5ee71f 100644
--- a/NotebookStudy.sln
+++ b/NotebookStudy.sln
@@ -7,6 +7,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "NotebookStudy.ConsoleApp",
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "NotebookStudy.Test", "NotebookStudy.Test\NotebookStudy.Test.csproj", "{F3F0CB92-A689-4272-A546-2A70560019B8}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "NotebookStudy.Core", "NotebookStudy.Core\NotebookStudy.Core.csproj", "{1A5C3097-E0F5-4710-8AF2-82832D9FFEBB}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -21,6 +23,10 @@ Global
 		{F3F0CB92-A689-4272-A546-2A70560019B8}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{F3F0CB92-A689-4272-A546-2A70560019B8}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{F3F0CB92-A689-4272-A546-2A70560019B8}.Release|Any CPU.Build.0 = Release|Any CPU
+		{1A5C3097-E0F5-4710-8AF2-82832D9FFEBB}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{1A5C3097-E0F5-4710-8AF2-82832D9FFEBB}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{1A5C3097-E0F5-4710-8AF2-82832D9FFEBB}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{1A5C3097-E0F5-4710-8AF2-82832D9FFEBB}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE