Everything but the GBLT rainbow (for the student's safety) and the Islamic crescent (same reason)
You think wearing a GLBT rainbow will endanger a student's safety more than wearing a swastika?
I'd say my school is incredibly homophoic and there are really no openly gay kids if any at all. There are a lot of openly anti-semetic kids.
You go to a pretty f**ked up school, then, if being gay is worse than being a Nazi.
Sounds like a typical American high school to me.
I voted to ban the symbols I disliked and allow the symbols I like.