UMS scores for AS exams can be out of 200 or 300 depending on the subject. For exams out of 200, an A is 160, a B is 140, a C is 120, a D is 100, and an E is 80. For exams out of 300, an A is 240, a B is 210, a C is 180, a D is 150, and an E is 120. A2 exams are marked out of double the UMS points of the corresponding AS exams.