Discipline in school is important but to much emphasis on conformity stiffles the natural instincts children have to explore and broaden their horizons. Learning skills is important but there is a limit to how far memorizing the multiplication tables will get you if you don't learn how to conceptualize a problem, model that problem mathametically, then formulate solutions and proofs to that problem. Skills training alone won't teach children how to do that. The same is true in science. Memorizing a bunch of facts, won't teach a child how to postulate a hypothesis, test the hypothesis, evaluate the variables being tested, analyze the data obtained and draw conclusions from that based upon the data and then apply those conclusions to solve other problems. This is why just learing science skills is of little value with out the practical laboratory experience of how to apply those skills.