A dance school my DC goes to seem to take approx two years before they do an exam, and that includes the early pre and pre primary exams. Some parents with older girls complained that their children are behind other similar aged children, in terms of technique when doing auditions. Also seem to delay exams while waiting for newly joined people to reach standard, so as to take the exam together (very small class sizes).
When queried have been told that their children are not ready and so on. I wonder if this is normal, as I'm considering looking elsewhere if this is really the case.