I think 12 hours is wholly unrealistic for 2 college courses, never mind in general. I think there are very few instances in which people study 12 hours a day.


Your courses are condensed right? Even so, I reckon doing a couple of hours of solid work for each subject a day is probably adequate.


Hard to know, depends on the workload & you as well... some people can get away with doing less work than others.


Are all your course materials spoon fed, or do you have to look stuff up? That makes a difference too.