good and nice man! Really interesting class, the material was great. But he rambles a lot, goes off on tangents mixes really confusing stories into his lectures. Not good articulation. tests are HARD, make sure to memorize EVERYTHING WELL, and applying that info for every topic. Imagine a hard take home test w/o notes. curved 1st mid 52 2nd mid 48

The concepts are easy, but the exams are difficult, as you have to apply what you have learned in various scenarios. Nonetheless, the grading is heavily normalized. Dr. Mahan is a solid instructor. Be sure pay attention to what he writes and says in lecture. Do note any of the points he has "starred," and be sure to go to office hours, if you can.

Quite literally one of the hardest upper division biology classes at UCSB. The tests are only based on his lectures, but are still so hard. The averages for midterm one and two were around a 43 and a 50. I will say it was a SUPER interesting class and he's a great teacher, but overall not an easy course.

What a mess this class was. Yeah, he's hilarious and is available for lots of office hours but when the average for both midterms is 40% and he decides to make the final 10x more difficulty covering material that was never taught.. you gotta take a second to look at the teacher. Interesting subject, complete garbage professor.

I would highly recommend taking a class with Mahan. His tests are really hard but he actually cares about the students doing well so if you go to his office hours it helps a lot. If he stars something on the board, 98% chance it will be on the midterm or final.

Great guy, great professor. Tests are really hard and require you to think outside the box which makes it very tricky, especially if you only have 50minutes. Large part of grade for 132L is also for an exam which isn't too related to the actual lab which is dumb. Should have been more based on lab performance and results in lab instead.