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.
And how to teach children at home if parents work in order for you to live, eat on the ground?
Many do not have the opportunity to sit with their children at home and teach them themselves.
That is why school is needed ... and then each goes his own way through life.