It's never what the teacher said, exam, homework, anything that will give, you have too expect to do more than what he tell you otherwise dont expect to pass his class. When he was teaching our group, they never had that many drop out or cancelling of the program he teach. For one of the intra exam he told us that it would be a lot of small anwser but it was 4 question that took 30m each to explain and the time limit was 2h. Dont get me wrong, ive pass his class, not a good grade (70%), but ive gived more energy that all my other class combine and ive an average of 85%.