It's funny how age doesn't really matter that much when both people are above 18 or out of school, but in school, it's a huge deal.
Anyway, because of how much I don't know about laws pertaining to child enthusiasm and whatever, I'm gonna have to say don't do it. I mean, this girl I know in my school is dating a senior and she's a freshman, but still, it's kind of peculiar. I don't really care, and nobody else says anything or talks about them or anything, but whatever. It's pointless if you'll be leaving the school next year anyway. It's possible to be able to build your relationship in school, doing stuff together, at least I think it would anyway. I don't know.
