I went to school in central London until recently and the amount of stuff the trans students were allowed to get away with was crazy. There was a dress code for the girls; no heels or platforms, no large hoop earrings, no crop tops, no short skirts etc, but the trans students (one in particular) was allowed to flaunt all of these rules. While other girls were sent home or given detention, they were allowed to do these things, leave class at any time and show up late with NO CONSEQUENCES. It got to a stage where other students would pretend to be trans just to get away with stuff. Rather than making trans girls follow the same rules as all the other girls, they were treated as special and better than everyone. And the number of times a male student would show up to school in a skirt and make up JUST so they could perv on the girls during PE? Too many to count.
The current trans movement is having a huge impact on young people and the safety and comfort of Women and Girls. Everything that went on in my school, honestly would have made me think I were trans if I didn't have my mum and all of this crazy stuff happening only a couple of years before I left.
PEOPLE NEED TO WAKE UP AND THE TRANS COMMUNITY NEEDS TO BE LOUDER ON THIS ISSUE!!!
I'm a trans person myself (born female, transitioned to male), but I am 34. My own high school experience was nothing like this. I have to take your word on what it was like in that school.
If that is what's happening, people should absolutely speak out. Pretty much every behavior you mentioned isn't just harmful to women, but harmful to the transgender community as well... because it makes us look bad. Trans people in general do not want special treatment! That's the opposite of what we want. We want to be treated normally, like everyone else. And if people are using being "trans" as an excuse for pervy or predatory behavior, that's definitely something to speak out against. That's not what trans people do. We don't need people thinking that's what we do. We just want to use bathrooms and dressing rooms safely.
It sounds like that school is out of control. I don't know how unique your experience is, as I graduated high school long ago and I don't have kids.