diff --git a/CaPPMS/Attributes/CappmsStringLengthAttribute.cs b/CaPPMS/Attributes/CappmsStringLengthAttribute.cs
new file mode 100644
index 0000000..196ae3a
--- /dev/null
+++ b/CaPPMS/Attributes/CappmsStringLengthAttribute.cs
@@ -0,0 +1,52 @@
+using System.ComponentModel.DataAnnotations;
+
+namespace CaPPMS.Attributes
+{
+    /// <summary>
+    /// Provides a custom string length attribute that includes the current length of the string in the error message.
+    /// </summary>
+    public class CappmsStringLengthAttribute : StringLengthAttribute
+    {
+        private string? context;
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="CappmsStringLengthAttribute"/> class.
+        /// </summary>
+        /// <param name="maximumLength">The maximum length of the object shall be.</param>
+        public CappmsStringLengthAttribute(int maximumLength) : base(maximumLength)
+        {
+        }
+
+        /// <summary>
+        /// Override the default IsValid method to store the current string value.
+        /// </summary>
+        /// <param name="value">The object to validate.</param>
+        /// <returns><c>true</c> if valid.</returns>
+        public override bool IsValid(object? value)
+        {
+            if (value is string str)
+            {
+                this.context = str;
+            }
+
+            return base.IsValid(value);
+        }
+
+        /// <summary>
+        /// Override the default error message to include the current length of the string.
+        /// </summary>
+        /// <param name="name">Property Name.</param>
+        /// <returns>A formatted message.</returns>
+        public override string FormatErrorMessage(string name)
+        {
+            if (this.context != null)
+            {
+                string message = base.FormatErrorMessage(name);
+                message += $" Current length:{this.context.Length}.";
+                return message;
+            }
+
+            return base.FormatErrorMessage(name);
+        }
+    }
+}
diff --git a/CaPPMS/CaPPMS.sln b/CaPPMS/CaPPMS.sln
index c50d584..f9d79b0 100644
--- a/CaPPMS/CaPPMS.sln
+++ b/CaPPMS/CaPPMS.sln
@@ -1,6 +1,12 @@
-Microsoft Visual Studio Solution File, Format Version 12.00
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.13.35913.81 d17.13
+MinimumVisualStudioVersion = 10.0.40219.1
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "CaPPMS", "CaPPMS.csproj", "{AA9B970F-5351-4EA2-A78C-7E83F05C57C1}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "CaPPMSTests", "..\CaPPMSTests\CaPPMSTests.csproj", "{5A356024-F9CF-BC44-22A7-4FEE4DBA2663}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -11,6 +17,10 @@ Global
 		{AA9B970F-5351-4EA2-A78C-7E83F05C57C1}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{AA9B970F-5351-4EA2-A78C-7E83F05C57C1}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{AA9B970F-5351-4EA2-A78C-7E83F05C57C1}.Release|Any CPU.Build.0 = Release|Any CPU
+		{5A356024-F9CF-BC44-22A7-4FEE4DBA2663}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{5A356024-F9CF-BC44-22A7-4FEE4DBA2663}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{5A356024-F9CF-BC44-22A7-4FEE4DBA2663}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{5A356024-F9CF-BC44-22A7-4FEE4DBA2663}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
diff --git a/CaPPMS/Model/Review.cs b/CaPPMS/Model/Review.cs
index 76e0adb..b4e9361 100644
--- a/CaPPMS/Model/Review.cs
+++ b/CaPPMS/Model/Review.cs
@@ -7,6 +7,11 @@ namespace CaPPMS.Model
     [SqlTableName("StudentReviews")]
     public class Review : ISqlTableModel
     {
+        /// <summary>
+        /// The maximum length of a string in the database.
+        /// </summary>
+        public const int MaxStringLength = 4 * 1024;
+
         public Review() { }
 
         [SqlIdProperty]
@@ -29,7 +34,10 @@ public Review() { }
         public string Score { get; set; } = "0";
 
         [Required(ErrorMessage = "Your comments for the student are appreciated.", AllowEmptyStrings = false)]
-        [StringLength(maximumLength: 255, MinimumLength = 25, ErrorMessage = "Please use at least 25 characters to describe the interaction of this student.")]
+        [CappmsStringLength(
+            maximumLength: MaxStringLength,
+            MinimumLength = 25,
+            ErrorMessage = "Please use at least {2} characters to describe the interaction of this student and at most {1} characters.")]
         public string Comments { get; set; } = string.Empty;
     }
 }
\ No newline at end of file
diff --git a/CaPPMSTests/Attribute/CappmsStringLengthAttributeTests.cs b/CaPPMSTests/Attribute/CappmsStringLengthAttributeTests.cs
new file mode 100644
index 0000000..b97ee49
--- /dev/null
+++ b/CaPPMSTests/Attribute/CappmsStringLengthAttributeTests.cs
@@ -0,0 +1,55 @@
+using CaPPMS.Attributes;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using System.Threading.Tasks;
+
+namespace CaPPMSTests.Attribute
+{
+    [TestClass]
+    public class CappmsStringLengthAttributeTests
+    {
+        [TestMethod]
+        public async Task StringIsValid()
+        {
+            // Arrange
+            var attribute = new CappmsStringLengthAttribute(100)
+            {
+                MinimumLength = 5,
+            };
+
+            string value = "This is a test string.";
+            Assert.IsTrue(attribute.IsValid(value));
+            await Task.CompletedTask;
+        }
+
+        [TestMethod]
+        public async Task StringIsInvalidMinLen()
+        {
+            // Arrange
+            var attribute = new CappmsStringLengthAttribute(100)
+            {
+                MinimumLength = 5,
+            };
+            string value = "Test";
+            Assert.IsFalse(attribute.IsValid(value));
+            string errorMessage = attribute.FormatErrorMessage("Test");
+            Assert.AreEqual("The field Test must be a string with a minimum length of 5 and a maximum length of 100. Current length:4.", errorMessage);
+
+            await Task.CompletedTask;
+        }
+
+        [TestMethod]
+        public async Task StringIsInvalidMaxLen()
+        {
+            // Arrange
+            var attribute = new CappmsStringLengthAttribute(10)
+            {
+                MinimumLength = 5,
+            };
+            string value = "This is a test string.";
+            Assert.IsFalse(attribute.IsValid(value));
+            string errorMessage = attribute.FormatErrorMessage("Test");
+            Assert.AreEqual("The field Test must be a string with a minimum length of 5 and a maximum length of 10. Current length:22.", errorMessage);
+            await Task.CompletedTask;
+        }
+    }
+}
diff --git a/CaPPMSTests/Model/Table/TableTests.cs b/CaPPMSTests/Model/Table/TableTests.cs
index 2ed13fc..fe316e3 100644
--- a/CaPPMSTests/Model/Table/TableTests.cs
+++ b/CaPPMSTests/Model/Table/TableTests.cs
@@ -1,4 +1,5 @@
-using Microsoft.VisualStudio.TestTools.UnitTesting;
+using CaPPMS.Model;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
 
 namespace CaPPMSTests.Model.Table
 {
@@ -8,7 +9,7 @@ public class TableTests
         [TestMethod]
         public void NumberOfColumns()
         {
-            var table = new CaPPMS.Model.Table.Table()
+            var table = new CaPPMS.Model.Table.Table<DummyTableObject>()
             {
                 DataSource = new IEnumberableDummyObject()
             };
@@ -19,7 +20,7 @@ public void NumberOfColumns()
         [TestMethod]
         public void ColumnNames()
         {
-            var table = new CaPPMS.Model.Table.Table()
+            var table = new CaPPMS.Model.Table.Table<DummyTableObject>()
             {
                 DataSource = new IEnumberableDummyObject()
             };
@@ -31,7 +32,7 @@ public void ColumnNames()
         [TestMethod]
         public void VerifySingleRow()
         {
-            var table = new CaPPMS.Model.Table.Table()
+            var table = new CaPPMS.Model.Table.Table<DummyTableObject>()
             {
                 DataSource = new IEnumberableDummyObject()
             };