Static class creation test.

CreateStaticClass.cs

using System;
using System.Reflection;

class Program
{
	static void Main(string[] args)
	{
		var allocate = typeof(RuntimeTypeHandle).GetMethod("Allocate", BindingFlags.NonPublic | BindingFlags.Static);

		var math = allocate.Invoke(null, new[] { typeof (Math) });

		Console.WriteLine(math.GetType()); // System.Math
		Console.WriteLine(math is Math); // True
	}
}