Simple. Lodge a complaint for every student taking in part in school activities claiming they're the opposite sex which would change it from just the girls to literally everyone and that will change things.

If they actually try inspecting then start lodging sexual assault claims and claim the inspector is the opposite sex and thus must be tested so we know the tester is testing the correct sex.

Essentially wrap them up in bureaucracy that drains funding. They'll cut that shit when they find out it's going to be several hundred thousand dollars to actually do and likely more like a half million per district to try to fight.