The thing you've got to remember is that the aim of school isn't to educate so much as it is to reduce unemployment levels by keeping kids off the streets.
Prison does largely the same thing and has the side effect of teaching much more practical skills like lock picking, knife fighting and sphincter exercising.
All you need to do is pass a law that makes ilegal something that everyone under 18 does. Personally I suggest text messaging.
That made my howl btw