I'm reminded of a couple of anecdotes...
Firstly, something from my own childhood... When I was about 13, some girls my age were flashed by a man on Hampstead Heath. They screamed and climbed a tree, and were trapped there while he amused himself, which was horrible for them, obviously. In another instance, an American girl was also flashed, but she reacted quite differently: she looked at the man directly and said (apparently) "Well, it looks like a d*ck, but it's smaller"
And so the man ran away! I can remember thinking (even at that age when I didn't know the word 'empowerment'!) that if it ever happened to me, I knew which response I would choose! I think we've got a bit better, a generation or two later, at bringing girls up to be more assertive and worry less about being 'nice', but as mothers I think we probably still do worry... :)
Secondly, I just remembered something that happened when my eldest son (now 17) was 12 or 13, in year 8... He and 5 other kids - 3 boys, 3 girls, all the same sort of age - were 'caught' at school behaving in 'sexually inappropriate' ways - cuddling each other, and (with one pair, but not my son) touching each other on the bottom and breasts. The school acted very promptly and pulled all the kids in for 'interview'. The member of staff who interviewed my son was a bit heavy-handed (imo) and used the phrases 'sexual harassment' and 'criminal behaviour'. My son was terrified and ran away from school. He came home; but since we live 5 miles from school, it took him 2 hours to get here, and it was a hairy time for me (and the school). When I talked to my son later, it was clear that, from his point of view, he was just hugging a girl he liked, and he had no idea that (a) she didn't like it and (b) that it was in any way 'sexual'. I was able to have a conversation with him about 'unwanted physical contact' and be very clear with him that he shouldn't ever touch a girl (or do anything else) without checking she wanted him to. He understood that, but it needed someone - in this case me and not the school - to talk in terms he understood. The school, by using the 'behaviour team' to talk to him, and the language it did, had only succeeded in letting him know he was 'in trouble', not in teaching him anything about appropriate sexual behaviour.
I suppose that's not directly relevant to you, now
- but maybe it's interesting! - and it does illustrate how daft unaware 13 yo boys generally are!