<p>There are several problems with your criticisms sbergman, but they are kind of obvious. One, the fact that a university welcomes more students doesn’t mean that the matriculation numbers of smaller schools should automatically be lower – it just means that people at the prep schools included in the study are more likely to attend certain larger schools than smaller lac’s. Also, the inclusion of so many different schools in diverse geographical areas reduces any kind of bias based on the matriculation numbers of one or a couple individual schools in a certain area. Last, the data included different years based on what the schools themselves provided, so the fact that one school was popular in one year would not skew the data.</p>