My school has one that asks for gender. I'm sure, technically, they want legal sex. But they asked for gender. So I'm torn between "they asked for it, so tell the truth and let them suffer their own idiocy" and "what if this makes things more difficult and I'm notsure if I want to come out like this". yup. fun.
Chances are I'll fill it out truthfully and staple something about transgenderists and the difference between biological sex and gender to it.