Our institution is on an academic quarter system and courses are 11 weeks long, unless otherwise noted. As a general rule, one academic unit typically requires approximately three hours of work outside of the classroom each week.
For example: 4-unit course, 4 units x 3 hours of studying (per unit/per week) = 12 hours of study time per week.
Please note, these are suggestions for weekly study hours only and actual times do vary.