Maybe it's just my university, but I spend 21 hours a week in class, even though I am officially taking 15 "units"). Most STEM classes are a 6 hour/week time commitment even though they are only listed as 4 units officially.
Also, class time is split about 60/40 between professors and graduate (sometimes undergraduate) student instructors. Class size for the student instructors is 25-30 and class size for the professors is anywhere from 100-1400, depending on the class. Some upper div classes are notably smaller, depending on the department. It's my understanding that this setup is pretty common at large public universities.
Also, class time is split about 60/40 between professors and graduate (sometimes undergraduate) student instructors. Class size for the student instructors is 25-30 and class size for the professors is anywhere from 100-1400, depending on the class. Some upper div classes are notably smaller, depending on the department. It's my understanding that this setup is pretty common at large public universities.