This, personal finance is simple. Do not spend more than you earn. Be careful with interest. Invest your savings instead of stuffing them in your bed. I think basic law would be a lot more useful but in general school classes outside of your national language, 1 foreign language and math are superfluous. If you're good at math physics and chemistry are easy, you can learn history and geography at any level without knowing "the basics" first. You can't do that with math, you can't learn calculus without knowing algebra.