He was very understanding of my situation.
Extremely intelligent but don't count on him to prepare you for the exam if you have him for AP.
Grreat he does not give grades away you have to work for them
He knew his material but communicated it to us very poorly. It was all lecture and didn't do too well on the ap test. I slept the most in there..
Herdlien doesn't make the class exciting/worthwhile. Lectures are very dull and boring. Makes you feel stupid if you ask a question. Not very helpful