Lectures proofs all day long. His final was a lot harder than his midterms and took my grade from a solid a to a b-, so don't make the same mistake I did and think it would be just as easy as the midterms. A lot of people struggled in this class, but it is not impossible. He curves a lot, but still not enough sometimes. His test questions are not straight forward, they are always a tricky one but if you pay attention in class and on the homework, the tricks are easier to spot.
Schroeder is a difficult, but a good professor. I struggled in his 31B class and I ended up in his 32A the next quarter. He's good at explaining things and usually relates it to real world examples. He also always answers questions in lecture fully, and I went to his office hours once and he was helpful. However, his exams are quite hard. Not the right class for someone looking for an easy pass.
The course I took last quarter was his 142. According to my friends who used to take other professors' 142, 142 is an easy class. But when I took Schroeder's 142, I understood what the word ' suicide ' means. His 142 is the hardest class I have taken in UCLA, especially for the final, which makes you want to end your life immediately. What I wanna say: you wanna be alive? Do not take his class!