I think one of the reasons why wealthy dominate selective colleges is because selective colleges still largely rely on their pipeline of established set of private and highly ranked public schools to fill their incoming class. University of Chicago representatives come to my town and only visit three private schools. If you want to attend U Chicago out of our area, you better be going to those three schools. You don’t need to be extraordinary, but need to graduate in the top 10% of those three schools. A stronger kid at a local public is simply not even looked at. I suspect because many elite colleges don’t trust the education of most high schools provide. If you happen or have a hook (URM, first generation, athlete), then your odds are extraordinarily improved out of feeder schools but not necessarily out of rest of the schools. So they did pull back admitting only from feeders, but the spaces that opened up are mostly going to Questbridge applicants. So you can imagine that kids attending those feeders mostly come from very wealthy families. I think this process has less to do with AP scores and more to do with AP scores AND certain brand of schools.