Actually, I called the school to find out if I could get my money back, since I got good grades but still ended up dumber. They investigated my hypothesis, but rejected it because they said everyone's percentile drops by the time they all graduate. That's the entire graduating population, not just me, so they would have to give everyone's money back if they accepted the hypothesis. I argued that's a true negative rather than a false positive. But they didn't think so, and kept my money.