This answers a lot of questions I have gotten regarding age/years in which various students are in. All of them!!!
Keep in mind, it is ONLY the people who would be attending the school, so not everyone is pictured.
Click on it for the big version, otherwise it will probably be pretty hard to see.
EDIT: didn’t realize Tumblr would resize it, here it’s full: http://img37.imageshack.us/img37/1754/bookg.jpg