Mexico’s National Autonomous University (UNAM) will require nearly 58,000 applicants to sit for a new in-person entrance exam after its first fully online admissions test triggered widespread concerns over cheating. The decision followed a review by a technical committee after score distributions jumped sharply from prior years. In UNAM’s 120-question exam, the share of students scoring above 100 points had held at 3.5% from 2021 to 2025, but rose to 16.3% this year. The proportion scoring above 110 points climbed from 0.9% to 5.5%. A total of 158,723 people took the exam. The university said the online format, held from late May to early June, used a locked browser, AI camera proctoring software and human review. Even so, about 2% of papers were voided. The committee identified three main forms of misconduct: mobile phone use during the exam, outside assistance during answers, and impersonation by stand-ins. On July 31, committee member Eduardo Bárzana García presented the findings, after which UNAM adopted a four-part plan centered on a controlled in-person retest. Final admission decisions will be based solely on those new scores. The move affects all applicants this year who either had already met the admission threshold or whose scores reached the minimum cutoff recorded by each program between 2021 and 2025.