120A was tough. I wouldn't say Wainwright was, though. Twice weekly office hours provided plenty of time to get clarification of homework, previous quiz questions, or general prob/stats questions. Every-other-week quizzes were tough, made by TAs, but only 12% of total grade. Mandatory section attendance (13%). Very information-dense. Worth it!

His lectures and pretty boring, and often irrelevant to homework and test material, but he is amazing during office hours, and if you put in the work to teach yourself how to do the homework, the tests should be a walk in the park. The biweekly quizzes are tough, but do-able with ample studying. Will prepare you for 120B.

Did not go to a single lecture and was able to get A+. Homework is free points and the tests are generously curved, but the biweekly quizzes (12% of grade) are difficult. Easy if you keep the topics organized! Anyone who got an F and rated him a 1.0 is simply not cut from the same cloth.

Wainwright was a fair professor and grader. PSTAT120A is always going to be a tough class, but he did a great job breaking down and explaining the material. The midterm and final were both very long, but the questions were fair. Go to CLAS and stay on top of the material from the beginning and you'll be okay

Honestly, this class was not as insane as people say it is. From my experience, the quizzes were more difficult than the exams themselves, and as long as you pay attention in section, you will be fine. Textbook is another big thing, it's not required but it is EXTREMELY helpful especially when studying for exams. Class was scaled very fairly too.

Lectures are not helpful and are rly boring, but his slides are useful. I like how his HW is a bit challenging but you are still getting full credit because he posted solutions the week after. Exams are not hard as long as you study, but they are pretty long and time consuming. Def recommend taking 120A with him because his grading is pretty fair.