There is no number that can be given. It is true that the prep school is for individuals that the academy sees as having potential but are lacking in a particular area.
The prior enlisted is mainly because these individuals have been out of school for a number of years. Usually at least 2, but up to 4-5 years. It's difficult to put them directly back into a top-10 type of school when they haven't been in classes since they were 17 years old.
Others, based on their environment, because of economics, academic opportunities/lack of, social/cultural upbringing, etc... may show potential but didn't have the opportunity to take the academic courses that most applicants did. But they show the potential.
Athletes: Many people recognize when an individual excels in academics. Many recognize when an individual excels in JrROTC, CAP, or scouting. Some recognize how others have excelled in EC activities like be the president of club, volunteering, etc... But many don't like to recognize athletics as an area to excel in that is equally as important or as impressive. Because sports and the military both emphasize as one of their most important attributes "Team Work", many don't see this as important; vs academics, JrROTC, CAP, etc... They see athletes as the stereotype of many colleges where they bring in an individual who is exceptional in athletics but sucks in academics.
The air force and academy want the well rounded individual. The prep school looks for individuals who are well rounded and have potential, yet they are lacking in an area; usually academics. I have seen plenty of individuals that the academy wanted because of they excelled athletically; but the academy said NO because they knew they couldn't/wouldn't succeed at the academy academically, socially, etc... I know first hand where some of the coaches; like Coach Calhoun looked at a highly recruited athlete, and said NO... He's not a good fit for the academy.
So your question can't really be answered. It isn't a matter of: "X" amount of athletes; "Y" amount of minorities; "Z" amount of prior enlisted; etc... The prep school is about individuals who show promise; probably excelled in one or more areas; but is lacking in an area (Usually academics). Who they choose isn't based on how many of what category they already have. It's based on the individual and wheat they consider will add value to the next academy class to add to it's diversity.
P.S. There is no "Application" for the prep school. it's simply.... You apply to the academy, and the academy decides if you receive an appointment; a prep school slot; or a "Sorry, try again next year" letter.
