There should be a mandatory GCSE in Life Skills. By the time you leave school you should know how to change a car wheel, wire a plug, stop a dripping tap, how to wallpaper and paint, being able to cook simple meals from scratch, alongside financial skills like budgeting.
@anon_opin Wiring a plug isn't likely a skill you need nowadays. Everything has to come with a fitted one (in the UK, anyway)
And if you DO have to wire one, you probably need to know what you're doing, in far more depth than a class taught to a bunch of bored teenagers.
