There’s nothing more magical than being in JK Rowling’s wizarding world. Don't tell anyone, but we're still waiting for our letter from Hogwarts, complete with emerald-green ink. We can almost feel the parchment in our hands right now - anyway, before we get too carried away, how well do you really know the Harry Potter universe? Do you have enough Ravenclaw in you to ace our ultra-hard trivia quiz? Time to find out with a trip back to Hogwarts. Good luck!