You're under the wrong impression if you think MBA is concerned with having the wealthiest Nashvillians' kids roaming its halls. The fact that many of the parents of MBA students are wealthy is a function of the tuition, which is expensive. MBA does not, however, target any Forbes list for its students. It wants great students who fit its well-rounded motto regardless of their financial position. When I look back at my classmates, most of them were upper-middle class families that made big sacrifices to send their kids to MBA. Admittance is about the quality of the student, not the bank account of the parent. I would point out that having wealthy parents does not equate to being a gifted student.
As for MBA alumni, you first have to consider that a large number of them do not matriculate back to Nashville after college. Of the ones that do come back to Nashville, many of them do want to send their sons to MBA. Some of them don't. Some of the don't have sons or don't have kids at all. Not all of them can afford it. Not all of their children can get in. The school isn't the right fit for everyone either. I know some MBA alumni who had sons and daughters who sent their kids to EHS for the conveneince of having them at the same school. Some of their kids went to Ensworth for elementary school and really wanted to continue on for high school. There are lots of reasons that a parent might choose one over the other, but I can assure you that MBA doesn't have any problem filling its classes, and a large number of alumni are still very interested in sending their kids their if they are so able.