You're mixing up lots of things, although this part is crucial > It is about the practical use of information acquired in public school. Primary and secondary

You're mixing up lots of things, although this part is crucial > It is about the practical use of information acquired in public school. Primary and secondary school educations' purpose it not meant to have any practical use; that's specialization. A productive sytem will have, as post-secondary options, a more academic education (university), and professional schools. Some countries have hybrid secondary education options, and that's an acceptable alternative. If a country doesn't give the options above, then there is a serious problem, but to orient public school towards practical matters is missing the point of basic education. By the way, there are accountants for doing taxes.