I tried getting off for a class for this semester. The class goes from 5-8, and I work 5-10. They wouldn't let ANYONE have off in our sort this semester. So I just ended up dropping the class. This class I needed in order to take other classes. Luckily I was already registered and everything for those other classes so I am able to stay in those classes according to the head of my programs department.
But they did give me off last semester on Mondays cause I had the same situation.