If you were recruited to an elite university primarily for your ethnicity but did not have the same intelligence as the majority of students, would you want to be around them constantly and feel the pain? Hence people self segregate for some peace. A better study would be to document the fate of these recruited students fifteen years after they leave.
I'm guessing you'd find many of those with “Affirmative Action Degrees” in mid-level jobs doing the same thing for the company they work for that they did for the school they went to......Providing cover for the “Box Checker Police”....
The “Peter Principle” is alive and well..../s