Hey everyone, I am currently a first-year grad student, and I'm having a little bit of trouble in quantum mechanics. I'm doing alright in E&M and Stat Mech. but on the quantum mechanics exams, I'm usually scoring about 10-15 points below the median. To study, I first make sure that I'm thorough with the concepts, then I work through extra problems that weren't assigned for homework, but I still don't seem to be prepared enough for the tests. The professor I have is known for being tough, but if I'm behind the majority of the class, there must be something that I'm not doing right. Has anyone else had a similar experience? Any help or suggestions would be greatly appreciated. Thanks.