I agree, but I’d add a couple of things. First, admissions committees do care about SAT/ACT scores and GPAs for purposes of assessing whether the applicant is capable of doing the work and likely to succeed at the school. Research shows the tests have some validity when used for making that threshold determination, and that’s all the College Board and ACT claim for their tests. . Higher test scores do correlate somewhat with higher success rates, but marginal differences in scores at the top end are pretty meaningless for that purpose, especially at highly selective schools where typically upwards of 90% of enrolled freshmen graduate.
Second, I agree that many schools (though not all) care about test scores for prestige and ranking purposes, but here, too, marginal differences at the top end are far less important than many on CC seem to think. What’s typically published is the 25th and 75th percentile medians, and US News uses test score medians for ranking purposes… But any score above the school’s 75th percentile will have exactly the same effect on those medians as any other score above that level—it will, in combination with others, pull the medians marginally higher. So if you’re the University of Michigan and your ACT 25th and 75th percentiles are 30-33, a 34 will help you just as much in the rankings and published data as a 35 or a 36. And if you’re the University of Detroit Mercy with ACT medians of 22-27, any score above 27 will help you just as much as a 36. So once an applicant is in that range, other admissions factors are likely to take precedence over marginal differences in test scores.
In either context, the notion of an applicant being “overqualified” seems rather meaningless, because it’s based on a misunderstanding about how test scores and GPAs are actually used in the admissions process… But I think calmom has it exactly right: schools do care about yield management because it’s an institutional imperative to get the size of the entering class right. An applicant’s numerical credentials may figure into that, but so do many other factors. For example, I’ve read that something like 80% of University of Michigan legacies who are offered admission enroll, while their overall yield is in the mid-40% range, and OOS yield even lower. In-state yield is right around 70%… So an in-state legacy legacy with a 36 ACT and 4.0 UW GPA will look a lot more attractive to Michigan’s admissions committee than an OOS non-legacy with identical scores and GPA, especially one coming from a school where they’ve historically gotten a low yield. And for that matter, an OOS legacy with a 34 or 35 probably looks more attractive to them than the low-yield 36/4.0. It’s not that the low-yield 36/4.0 is “overqualified.” Some 36/4.0’s are being admitted; it’s just that some are more likely to enroll, and that makes them more attractive candidates for admission…