Elite Colleges Mandate SAT/ACT, Signaling End of Test-Optional Admissions Era

The short version: The test-optional era at elite American universities is over. Driven by internal data and massive national studies, institutions like MIT, Dartmouth, Brown, and the rest of the Ivy League have reinstated SAT and ACT requirements. The reason is mathematical: standardized tests predict college success far better than high school grades do. For high school students building their college strategy, the actionable takeaway is clear—a strong test score is once again a mandatory component of a competitive application to highly selective schools.[4]

The data driving this reversal is stark. A landmark study by Opportunity Insights, a research group based at Harvard University, analyzed the records of students at "Ivy Plus" colleges. The researchers found that a perfect SAT score (1600) or ACT score (36) predicts a 0.43-point increase in a student's first-year college GPA compared to a student who scored a 1200 or 25. This difference is equivalent to a full standard deviation in the college grading distribution, making it a highly reliable signal of academic readiness.[1]

Conversely, the high school transcript has lost much of its predictive power. Widespread grade inflation has compressed high school GPAs, making it nearly impossible for admissions officers to distinguish between top applicants. The Opportunity Insights data revealed that a perfect 4.0 high school GPA, when compared to a 3.2 GPA, predicts a difference in first-year college grades of less than 0.1 points. In short, high school grades explain only a fraction of the variance in college performance compared to standardized tests.[1]

MIT was the first elite institution to act on this data, reinstating its testing requirement in 2022. Dean of Admissions Stuart Schmill noted that MIT's rigorous core curriculum—which requires two semesters of calculus and calculus-based physics for all students—made it impossible to reliably predict student success without standardized math scores. The institute found that students admitted without test scores were significantly more likely to struggle academically, regardless of their high school grades.[2]

The equity argument—the primary reason schools went test-optional during the pandemic—has also been upended by new research. The initial assumption was that dropping test requirements would help lower-income students who lack access to expensive test prep. However, a faculty research group at Dartmouth College found the exact opposite. Without a common test metric, admissions officers were forced to rely heavily on other factors like essays, extracurriculars, and counselor recommendations—metrics that are heavily biased toward wealthy students at well-resourced high schools.

Dartmouth's research identified a damaging "withheld score" phenomenon. Lower-income students were mistakenly hiding test scores that would have actually helped their applications. For example, a 1400 SAT score from a student attending a high school where the average score is 1000 is a massive signal of academic potential. But under test-optional rules, those students withheld their scores, fearing a 1400 was too low for the Ivy League. By reinstating the requirement, Dartmouth argued it could better identify these high-achieving students from less-resourced backgrounds.

Brown University reached a similar conclusion in March 2024. After a six-month review by an ad hoc committee, Brown determined that test scores, when evaluated in the context of a student's background, advance both academic excellence and diversity. The university emphasized a "testing in context" approach, meaning a score is judged against the educational opportunities available at the applicant's specific high school, rather than a raw national average.[3]

The Opportunity Insights study also tested for "calibration bias"—the concern that test scores might artificially inflate the predicted success of wealthy students. The researchers found no such bias. Students from different socioeconomic backgrounds who shared the same test scores achieved similar average levels of academic success in college. While it remains true that wealthier students generally score higher on the SAT due to accumulated educational advantages, the test itself accurately measures college readiness for all groups.[1]

By the summer of 2026, the Ivy League had completely reunified around mandatory testing. While hundreds of less selective colleges remain test-optional, the data has settled the debate at the top tier of higher education. Standardized tests are not a perfect measure of human potential, but they remain the most reliable, objective tool available to compare students from over 30,000 different high schools on a level playing field.[4]