I kind of wish they taught game design and programming because online tutorials all confuse me and seem to require some payment.
School does actually teach useful things, for example, math. They teach math to train you at thinking logically. They don't teach things like paying bills or getting jobs, but they actually teach some things that might potentially be useful to know for your job. Though they may be expecting too many people to become nuclear physicists or something.
If I'm being honest I can't think of one thing school's teaching me that's completely useless.
Oh but they should definitely teach survival skills. That's kind of an important thing.