My college had comprehensive exams. It was hard enough remember specific details of a class you took 3 years ago even when you were in other classes, seeing th

My college had comprehensive exams. It was hard enough remember specific details of a class you took 3 years ago even when you were in other classes, seeing the professors every day, and constantly talking about the field. I can't imagine taking a year off and then trying to come back and remember everything after being away.