I have no idea, that was commonplace at that school, luckily nothing as stupid has shown up yet. The highschools just started to let us wear something aside from navy blue polos and khahki's (Holy heck I freaking HATED those uniforms). Albeit shirts have to be school colors and have the school logo, we can wear black shorts though.
Anyway, rant aside, no use whining about it. I doubt it'll change any time soon.