I work in state secondary schools and girls' skirts are the shortest I have ever seen them (been in schools almost 20 years). They are indecent in many cases. Last week I stopped a girl going upstairs infront of me at lesson changeover. She was wearing a skirt and black opaque but see-through still tights. The skirt was so short you could actually see the curve of her bum cheeks below the hem and as she walked up the stairs the tights were see-through and she was wearing a thong.
I took her along to my office and had a chat with her. She was really huffy to start off with but came round as the discussion went on. I said I would see her at some point every day after half-term to check she is dressed appropriately for school and I spoke to her mum- who was bad-tempered but actually it was because the girl has been ignoring her when she has to,d her the same things. She supported me in the end.
She's not the only one, there are lots of them. Staff deal with this constantly and if you are not skilled at doing so it can lead to very awkward situations for staff. It's not about boys not being able to control themselves. If a teenage girl is walking upstairs infront of a group of teenage boys and they can literally see her bottom and her skimpy underwear of course they will comment. Most people would.
Boys and girls are bombarded by messages that they get from advertising/social media/porn about what women want when they expose their bodies most intimate/private areas. Yes women should be able to wear what they want , at least when not at work, but women also have a responsibility to themselves and to other women about decency, self-respect and appropriateness. I don't want to see any intimate/private areas of another woman, especially at work but also generally.
Teenage boys wear full-length loose school trousers, a white shirt and a blazer and tie. They are completely covered all the time. Girls wear these incredibly short, tight skirts often almost as short as their blazers. In PE boys they wear a loose polo shirt and baggy shorts. The girls wear skin tight lycra shorts or leggings in PE and again they are revealing. On non-uniform days girls often wear low-cut crop-tops and skin-tight leggings - nothing left to imagine.
Male teachers should not ever be touching teenage girls, and this school has got it so wrong. But the school uniform policy should be followed and the girls are taking the piss. Their parents have a responsibility to support the school policy and also to talk to their daughters and sons about respect and self-respect and the messages you give others.