So what? Are you inferring this is the result of the ACT/SAT?
I’d suggest that testing has nothing to do with college admissions in total, since there are plenty of colleges every May still seeking to fill a class.
(Hint: don’t you think out 50% dropout rate in urban high schools-- pre testing – contributes towards students not going to college?)
See, here’s the thing: all colleges are test optional, but optional for admissions. In other words, if HYPS wants a kid bad enough, they can and will ignore their scores. (Well, the sports side of the Ivy League does have some formula, but if the applicant is not a sports star, but otherwise, hooked, admissions can accept him/her with any score that they have.)
Testing companies already do this. Such a discussion is easy to find on CB’s website. But anyone who took AP Stats would immediately realize the fallacy – that the good researchers in Harvard’s Educ school failed to recognize: just bcos the whole testing pool may only move xx points on a retake, there are some students – albeit rare – that can jump 300 points. So, by following this stupid recommendation, they are limiting such students.