AP Chemistry's not an easy course, there were too many kid's in each class, and you're just a bit afraid of your AP students, but an awsome teacher
The Kleinmiester, The Kleinster, Kleinmaster Chemistry!!! Klein is a great teacher and probably the most helpful one I know of off hand.
an extremly intelligent man full of information, he just needs to work on the ability to pass that information onto his students.
I stayed after with him everyday for a month before my AP exam, and I learned everything I had to.