From personal experience, I'd say kindergarten age kids can do well with handling corns if brought along slowly and well surpervised/taught early on. My daughter just finished kindergarten, and she handles my corns (adults and 04s) pretty well at this point. I rarely need to help her anymore (but I do still keep a close eye, just in case they decide to try and dart or jump). I would agree getting an adult would be best from the snakes standpoint as well as the kids, as you can make sure that you're not going to end up with a feisty one. I'd hate to see the trouble you, and the snake, might get from parents if one of the kids got tagged and went home with any marks from it. Good luck with your search, and hope the prinicipal is open-minded enough.