Ivy League Professor Suspects AI Cheating, Shifts to In-Person Exam; Scores Drop by Half

A Brown University economics professor, Roberto Serrano, suspected students were using generative AI to cheat on exams and ordered an in-person final. The results showed a dramatic 50% decline in scores, suggesting widespread AI-enabled cheating had been masking a lack of genuine learning. A separate survey of Princeton students found nearly 30% admitted to using AI on exams or assignments, highlighting a growing issue even at elite institutions.