Math 31B is a pretty standard calculus class, so if you've taken AP Calc BC in high school, you should be completely fine. The midterms and quizzes were representative of the material and were fairly easy. The final, however, was pretty challenging, and many people did not do well. However, Professor Flynn ended up curving the finals by 20 points so everyone would receive a passing grade. The professor is very approachable and understanding, even though he's not great at lecturing. He mostly just reads off the textbooks and does not dedicate enough time to practice problems. Overall, Flynn was pretty easy (at least compared to other 31B professors), and you can definitely earn an A in his class if you put in a decent effort.