They prioritize based on their institutional needs. If they need an athlete, he gets in. If they need an oboe player, he gets in. If they need to appease a fabulously wealthy donor, she gets in. If they need or want a student from Andorra because they haven’t had one for seven years, he gets in. If they need to maintain their connection with X Boarding School and want to take one more student, she gets in.
It’s impossible for anyone here to say.