Oh man, so now wanting a young woman to be sexually safe, responsible, and have a firm grip on the mechanics and emotional issues around it before she heads off to university alone and is completely stripped of her support network is equated to "women are slaves to mens desire".
The mental backflips required for this conclusion are astonishing.
Men and women both enjoy good sex
Good sex is an important part of any relationship
Learning about what turns you on with a partner allows you to start having good sex
Having the ability to say "Yes, I like that" or "No, I don't want to do that" is a hell of a lot easier in your own house, with your parents within shouting distance, than it is in University Halls or in Nightclub toilets or at house parties, possibly with drugs or alcohol involved.
Sex is fun and very pleasurable for both parties when done correctly. By all means, tell your DD that she doesn't owe anything to the guy and shouldn't rush into things, but to say "You shouldn't have sex and you should wait as long as possible before having it" just reinforces the damaging idea that sex is shameful, dirty, and something to be afraid of, rather than revelled in.
The idea that they should focus on their schoolwork instead is just really funny to me. When, exactly, is she allowed to have sex then? I mean, she's got 3+ years of university after her A-levels, and her degree is more important that her school exams, so OBVIOUSLY she can't have sex at uni. And then when she leaves Uni and gets a job then surely she needs to focus on making her way up the career ladder. Maybe she should just have sex twice in her mid 30s only so she can conceive a couple of kids?
I'd rather my kid dropped a grade or two and was having a really positive sexual relationship education if I'm honest. That B in Geography isn't going to follow you around forever, but not being able to control a sexual encounter when you're 18 and away from home just might.