From PPs:
"And this stuff doesn't 'crowd the curriculum', it's generally all covered in a subject called PSHE, for one lesson a week, or even in form time which happens every day anyway."
"Those bits that aren't already covered elsewhere in the curriculum, you tweak a PSHE session, job done. A lot of the time it is already covered somewhere in essence so it's more of a tweak to how it's delivered. For example cookery (ahem, sorry, food tech) and biology contained a lot of material relevant to healthy eating, PSHE and maths and business studies a lot relevant to budgeting etc."
"Don't most schools have a half hour per week on 'social' type things where they cover contraception and drugs and stuff? Surely teaching basics about managing a few life skills can be thrown in there."
Exactly. It's not like any of the skills mentioned above would take much time to teach, given that the children have several years of that weekly lesson in which they can be fitted in.
If you're keen on "very big government" - whether from a left- or right-wing perspective - and on keeping a much closer eye on parents over more than abuse, and sending them to classes themselves so that they can teach their children these things, then checking to see if they have, and penalising them if they haven't...
You can advocate for that. I'm not sure I'd agree with it.
But until there's some way of making absolutely sure parents cover these things, we have to have something in place to pick up the slack. The only alternative is to seriously let children down.