Nowadays the educational system still follows these blurry guidelines witch where given in times of mass manipulation and control over humanity..
And now the misstake is that they mindlessly shape all the brains to become an "ideal" brain- a subjective term invented by a person with old and not rational ideals. Teaching everything to everyone is basic knowledge and its necessary for everyone. But the speed evolution takes place now is incredible,.. and just for a few years people change their believes and become more critical. They question the world. So in order to improve the future we have to give the freedom (we did not have) to follow