I am fond of making wishes, and looking wistfully back at my school days. Here's another wish: Instead of saying "You must learn this, because it's the rules," I wish someone had said, "You should learn this because it will explain how the language you are speaking, right now, actually works." That's what it is--"How stuff works." Not "How to make people not sneer at you."
This article available online at:
http://www.theatlantic.com/international/archive/2012/11/your-brain-on-french-grammar/264631/