Brainwashing and teaching us to obey authority. I reccomend that anyone that actually cares about their children to home school them and forget about the corrupt schooling system.
We can choose a good school for our children and I think not all schools are corrupt, my son has a good school as of now and I don't think that they are just using their school to collect a lot of money, because my observation to my son is improving and he can also improve his communication skills and social skills.