American schools are still run, as far as I know, on the factory model although we live in a high-tech society. Everything is regimented and lowbrow for people who are going to sort screws for a living. Why does an assembly line worker need to be creative?
As Pink Floyd so aptly put it, "We don't need no education. We don't need no thought control."
I was reading a novel once in which a upper class English "gentleman" was arguing against allowing "the great unwashed" to learn to read. He said that no man who could read would ever go down into a coal mine.
So, if we teach kids to think and come up with new ideas, they might have a sense of self-worth and not settle for living on minimum wage with government subsidies or being controlled by their corporate masters.