Don't you think there's a qualitative difference involved in teaching for the purpose of instilling enough knowledge to pass an exam, versus teaching to instill a passion for the material? Making dioramas, drawing political cartoons, and wearing togas while reciting Mark Antony's speech from Julius Caesar were the kinds of things that kept me motivated to read and understand material in which I held no innate interest, and all of that seems superfluous to a test-driven approach.