Great teacher, really hard but you will learn a lot. Yes you do have to work really hard and do all the work as the tests are harder then the homeworks or material he presents in classroom lectures. But if you study hard you will be able to do well. I liked him because he was one of the few teachers in sfsu that have great lectures prepared - so he works hard and expects us to work hard as well. He is one of the reasons why i think of going to grad school teachers like him give me hope. So I will keep hoping that some of my grad teachers will be at least half as good as him.