Also school plants into children some biases that later used by authorities for divide-and-conquer.

E.g. the school told me that I belong to some ethnicity and that there are other ethnicities I should know about. As a child I couldn't care less. Why would they tell me this if ethnicity doesn't even matter for future job?

Another example is socio-economic system classification: capitalist vs socialist vs fascist vs monarchy etc. Why does it have to be so clean-cut categories? Like if you're not in one camp then you have to be in another. Just another divisive tool.

So they do want to create the work force but they also want to prevent any sort of revolt and thus plant psychological leverages in peoples' heads. It is a science of social engineering that they don't teach in schools.