Someone with access to the full stats from the other schools can chime in, but I believe USMMA may be the highest for attrition. The drop rate during Indoc, Beast, etc., are very similar, 1-1.5%. Then, it is during the first year that drops are heavy at USMMA, and then again after sea year. I do not know of where the statistics for set backs are. But, I do know that the 210 total graduate figure includes set backs originally in the class of 2019, who joined the 2020 class at some point in the past, and, do not include those who were set back from the class of 2020 into the class of 2021. That being said, assuming the number of set backs a class suffers, equal the number of set backs a class gains, the attrition rate is high. There are similar numbers, if not worse numbers, from past classes. The set backs can occur for medical issues, but they often occur for academic issues. I think, but could be wrong, the fact that there is a trimester system, and sea year is set up on two tracts that divide a class-A split and B split, the ability to take a class over the next trimester to address a failure is limited. (Currently, there is an attempt to remedy some of this with a third tract, but I am not fully aware of how it works, although i think it has started to be used )