The major “stall” to learning chemistry and other STEM subjects is ....***math***! Ditto for basic building, carpentry, and sewing skills. Government schools have proven to be completely sucky at teaching math.
Our community orchestras, choral groups, and string bands **welcome** young people. As for dance? Gymnastics? Karate? Blue Grass groups? Theater for elementary age kids? That’s completely private.
You evidently are not into chemistry, physics, electronics, or the like. Otherwise, you'd understand that labs are very important, above and beyond the math. Chemistry does not utilize a lot of math unless you are trying to theorize at the atomic level.
Society is social. School is a social thing, one that is very much a part of our society. Sure, it has its faults. All of those can be cured. Citizens have to care enough to fix the system, not abandon it. You don't actually care about your Nation. You want to abandon its needs without considering how it all evolved in the first place. It is "pooling our resources", something you might start all over again, just to eventually come around to the same old place for the same old reasons.