No boys in my daughter's bathroom!
The wording makes it sounds as though no proof is required to be presented by a student that they are transgender. Even if they provided "proof" of gender dysphoria from a psychologist, that still shall not be reason to allow students to enter bathrooms designated for the opposite biological sex. In theory, a senior high school boy walking down the hallway could suddenly decide that he just swapped sexes since he's gender fluid and walk right into the girl's bathroom. Absolutely insane! This is why there are conspiracy theories about leftists diddling little kids, they're always pushing creepy boundaries with children.