To me, the most infuriating part of Harry Potter was how everyone acted like casting spells and brewing potions was the rough equivalent of learning the Pythagorean theorem. Harry and Ron routinely fell asleep during History of Magic and procrastinated on their Transfiguration homework. I think I speak for all of us when I say we would have KILLED to be doing that stuff. Instead, we were diagramming sentences and learning that mitochondria is the powerhouse of the cell.
Simply put, we would have been soaking up that information like a sponge. But does that mean we could sit our O.W.L.s and pass with flying colors?