this is a good article.

Coaches are limited by how many athletes they can recruit. NCAA rules. If the tennis coach recruits an extra, it has to come from lacross or football. And in an example of Norwestern, Harvard and Stanford trying to recruit a star soccer player, only Norwestern can offer a scholarship. So although the 70% acceptance for a only a 4 level applicant. That can be from a group of 5 athletes. Probably for football or hockey. Since they need so many players for those 2 sports.