I was on hormonal contraception from the age of 13 to 30 (when I started TTC), firstly on the pill at my parent's request as I was having very debilitating periods affecting my education (I didn't start having sex until some 4 years after starting the pill), then later on the implant. At the time, I thought hormonal contraception was fabulous. Seemingly I had few side-effects and it was really suitable for long-term relationships, which applied to most of my adult life (I used condoms in addition at other times).
However, once I came off it all and had children, I never went back on it, and it's only now - 6 years free of hormonal contraception - that I realise the minor side-effects it had. It's possible of course that some of this could be do to the effects of having children; I'll never know in all reality. But I believe that most of the minor niggles I had before were due to hormonal contraception. I will never go back to it again, and I would counsel my DD to avoid it too, although obviously it would be her body and her choice.
I have some sympathy with the school and HCPs. Fact is that too many parents aren't talking to their children about sex, stis and contraception in practical terms, let alone more 'abstract' ideas such as consent and coercion. HCPs are just trying to pick up the pieces. However, I agree with SaF that the best way to deal with this is to start ramming home consequences for boys as well as girls.
It may actually be lying (since the CSA are ineffectual and most NRPs don't pay for their children) but let's include classes on how the CSA works and how much boys will be expected to pay for a child if a girl gets pregnant. Let's have classes about consent in which we name coercion and pressure for what it is and label those who do it as rapists in no uncertain terms. Let's present it as 'how sad are you if you have to pressure a girl into having sex' as much as we do as 'what a horrible, totally unacceptable way to behave'. Let's have more classes like those given to LapsedPacifist's DS. Let's make it clear that STIs affect girls more than boys since they are twice as likely to contract them. Let's make it clear that anyone who doesn't take that seriously could be considered either really stupid or unpleasant, and let's make it clear that refusing to use a condom even when a girl has 'taken care of' the pregnancy risk, is a form of coercion, so even though a girl may be willing to have sex in principle, it is still a form of rape - rape of a girl's health.
It may seem harsh, but it can be done in a fun way and should surely be carried out before all but a tiny minority are having sex anyway - so that no one would feel personally attacked by any of this but be fully aware before they start having sex.