20AH with Kavner is a pretty easy A as there aren't any quizzes or tests except for a final that doesn't hold much weight. All the grading comes from the homework and an easy project at the end of the quarter, and you can correct the main homework if you mess it up the first time around. However, if you're interesting in taking this class to learn, you'll get some out but not much more than you would get from reading a textbook. Kavner is really nice and enthusiastic but it doesn't really feel like you're learning much because she gets sidetracked easily and there's a big discrepancy sometimes between what you do on the homework and read in the textbook vs. what is actually taught in class.