Should teach a trade once ur 14. As an option at least. 10th 11th & 12th grade could be 3 years of half day of learning a trade like plumbing or whatever it is. Maybe go into field for credits ur last year. Basic skills like how to do taxes (even though taxation is theft) frankly I say school should end at 16 and you go right into being an apprentice for a skill. Age 14 & 15 u spend half day at school learning said trade. By 18 you could be a totally able bodied plumber or electrician with 2 years learning and 2 more years on job learning, Not a master yet but a skilled can go work normal gigs at 18 ready.