And what are those budgets spent on? For the majority of subjects you only need pen, paper, blackboard and chalk. Couple of textbooks with expired copyright. Throw some chemicals for chemistry. Couple of frogs for dissection in biology. One teacher per 30 students. Two janitors, one fat lady with a goatee in the cafeteria to dispense slop.

If this style of education helped Feynman to get Nobel prize should be enough for current gen of pupils. And it is not expensive.