The site is run by a character named Alexis and this is the second time that it has been up. The first time it was really popular but due to personal reasons had to be taken down.
The site is like a real school but with Sam and Dean Winchester teaching either normal people or people who came in contact with something supernatural in their lives about hunting. The site hold real classes in which the admins of the site actually put together material to teach. The grading process is by the dice method so its completely random and doesn't require the students to actually do anything but roll dice.
Winchester Academy Website - warning site contains trojan virus.