There’s so many classes that I want a refund on my wasted childhood time. Reading the “classics” in English, studying foreign language, Theology (Catholic schools), History (yes, History). I hated all these classes, didn’t learn much from them beyond what it took to pass the tests, then quickly forgot what they taught. Anything useful that would have come from those subjects I learned later, through alternate more enjoyable means (e.g. Assassin’s Creed was way more effective in teaching me the history those games covered).