Speaking about the American public school system, that was brought to the US by Horace Mann from Prussia. The Prussian education model was essentially an NPC factory. The goal was to produce graduates who were optimally suited for government clerkships, military service, or factory work, and all graduates would be of the same general opinion on all matters of import from that day and age. Schools teach people what to think, not how to think and that's why the internet is a shitshow of the blind leading the blind.