Idea I remember when I turned a fantasy high school into a private boarding school... it was hilarious telling players "Uh, no nekos and you need to actually attend class or your character's gonna get their ass beat."
I saw that awhile ago. Not too fond of children OOCly nor do I enjoy playing under aged characters BUT it was an interesting twist. Just gotta get players that don't play a 4 year old like they're 20.