[professoretc]

The rule for college/uni I've always heard (and repeated to my students) is 2 hrs outside of class for every hour in class. So a 4 unit (= 4 in-class hours/week) class should have 8 hrs of outside time dedicated to studying and homework.

[JohnMakin]

if this was the case for everyone I never would have had a chance at graduating while working multiple jobs