1. Your school isn't gay. Most schools don't crave sex acts, let alone with a school of the same gender. ;)
2. Pontiac is right next door to you, and if there is a city which probably has several hip-hop dance teams, it is that city. I don't know if their high schools would let someone from a different district particupate, but it's worth finding out.
3. Also, call your local Chamber of Commerce and ask for a copy of the continuing eduation brochure. The city will offer classes in all sorts of dance, and hip-hop could be one of them. If not, ask them to start a class! (Local dance schools might have courses, too.)
4. White girls have rhythm, too. Good luck!