There were a number of classes I dropped due to fear of failing out. The website Rate My Professors had just started when I was in college. My favorite review on it was regarding a Mr. P a real nightmare of a professor I had. The review stated the devil took Mr. P's class and dropped it because he thought Mr. P was more evil. Lol
I was always sort of a number nerd till I got to college. Failed upper level Calc. classes, Game Theory, Theory of Probability, and something else. Just couldn't hack that stuff