Reading a lot of posts on SDN I've read about students getting shelf exam scores in the teens, 20's, 30's how does that happen? Are the shelf exams that hard? How bad is the time restraint on the exams? I thought that at most schools you are required to pass the shelf exams in order to pass the rotation irregardless of what you get on the other parts of the rotation. I'm kind of worried because these people seem to go through weeks of a rotation without trouble and then get a score like that... is that so uncommon?I'm worried because I don't want to get a score in that range but need some advice so that I don't end up in that situation.