My school breaks down a little different, we do all the a&p, micro, nutrition, etc, then we start clinicals AFTER that, so most people only have one class - they group the class, clinical and lab together so its one unit and counts as 12 credits, which is full time. Anyway, to answer your question, I can't study for hours on end I lose focus. I study for 3, 30 min sessions. So 1 1/2 hrs per day.