<p>You have to buy a new DOC book every quarter. The syllabus varies a little from year to year, as well as from professor to professor. DOC 1 is generally agreed to be okay, and the standard of writing is much lower than that in DOC 2, as I’ve seen. DOC 2 is much more dense and the least-liked, being full of Supreme Court cases. Writing-wise, I think the TA’s are forced to grade more harshly than in DOC 1. DOC 3 is the favorite - I hear you get to watch movies. Still, even DOC 2 isn’t that bad, even if it’s 6 units. I’ve had to work much harder in chemistry classes that are only 4 units.</p>