I took Gantner's history of California class over the summer. The guy is an awesome lecturer with an expansive vocabulary. Very confident and knowledgeable. His political views are very left wing, and once or twice he digressed into full on rants. This became a little distracting for me as I am quite conservative. But Gantner is very respectful towards students, and never made anyone uncomfortable for disagreeing with him. He is hilarious as well, and a few of his bitter one liners had me dying. As far as assignments, my class was not typical as Gantner was experiencing a family emergency at the time. Our grade ended up being comprised of a single paper, which I put a weekend into and finished with an A. I highly Gantner for anybody who enjoys strong lectures with a lot of humor on the side.
Summer 2020 - Professor Gantner's class is entirely based on the readings; the first day of class he told everyone their attendance and participation wouldn't affect their grades at all. The midterm and final (about 4 pages each) are based on topics from the readings, and they make up the entirety of the class grade. The due dates are pretty flexible, but that was a result of being incredibly vague (we were told different things on the syllabus, in class, and in office hours.) The class itself is interesting if you want to actually learn about California history (especially when Professor Gantner shows historic pictures) but entirely irrelevant if you just want to get a good grade in the class.