Along with what everyone said about being yourself, I think a lot of people forget this:
You most likely won't see or remember them after school (whether high school or college. Especially high school though.)
If you do keep in touch with any of them, that would be because you guys are friends, and they accepted you for who you are. Don't lower yourself to try to fit in, it's always better to be smart and mature rather than anything else.
I can guarantee you, much more people appreciate maturity.