Other than some supplies, and fees K-12 is mostly free. Why do schools get subsidized by the government? What is the payout?

Not trying to be a jerk. I am just wondering why it is not much of a deal for those who don’t support big government? Why does free education stop at 18 years old? Why that specific age? It could have been 17 or 19 or 4 or 25 years old?

Also who decides what age that one can be called an adult? Is it States or provinces or federal?

In Alberta today you are required to attend school until you are at least 16 years old or grade 10.

Topics: education, school, government, free, children, adult, P&R, subsitized