bend, it certainly doesn't seem to be a minority of women who have experienced this kind of behaviour - and I agree about the zero tolerance - but I sincerely hope it's a minority of men doing it. If more than 50% of men behave like this we've got bigger problems than I thought.
Unfortunately I suspect there's a large group of men who, while they wouldn't harass women themselves, find it very difficult to challenge sexist behaviour and attitudes in their peers, and so collude with it to an extent. It's hard for young men to stand up to the peer group and we obviously need to change attitudes generally, by the sort of refusal to minimize that you mention, for that to be easier.
Xenia, our catchment area comprehensives are single sex, with a Joint 6th form. It's not what I would have chosen, but can see the advantages for the girls, who seem to get on very well, outperform the boys' school (obviously part of a national pattern) and emerge into the 6th form apparently confident and ambitious.
I'm not sure it worked well for the boys, though. There's a sort of laddishness that's sometimes reinforced by mainly male teachers, a massive focus on sport to the exclusion of academic achievement and a curriculum based on a lowest common denominator stereotype of male interests - nobody got the chance to learn more than one language, for instance.
One of my biggest gripes, though, is that when it came to sex and relationships education, every single bit of it was delivered by /dumped on female teachers.
It could have been such a positive move to have young, male, sporty teachers talking openly about sex and relationships and challenging societal sexism; modelling, for example, a clear understanding of issues around consent. It seemed like such a wasted opportunity: any boys who already devalued women were dismissive and just behaved badly in the sessions.