That Brown 'Cheating Chart' Is Really About How Grades Replaced Learning — And AI Just Made It Visible
82% of University of Pittsburgh students say AI use hurts their own learning — yet they use it anyway because grades, not learning, are what the system rewards.
The Brown Chart Isn't About Bad Students — It's About a Broken Game
By now you've probably seen the side-by-side grade distributions from Brown University economics professor Roberto Serrano's welfare economics course. A take-home midterm: 96% class average. An in-person final given weeks later: 48.6% average — the lowest in the course's 20-year history. Between those two exams, 18 students dropped the class, 9 never sat the final, and 19 ultimately failed. The instinct is to read this as a cheating scandal. University of Pittsburgh motivation researcher Leo Schumann has a more uncomfortable argument: the chart is actually showing you something that's been true for decades, and AI just stripped away the last thing hiding it.
What Students at Pitt Are Actually Telling Researchers
When Pitt surveyed 2,251 undergraduates through the Student Experience in the Research Institution survey in spring 2024, the numbers pushed back against the "lazy, cheating generation" narrative. Thirty-eight percent of students said they hadn't used AI at all that academic year. Only 15% used it several times a week or daily, and the most common uses were brainstorming, generating practice questions, and making flash cards — not ghostwriting essays. The same patterns held across more than 45,000 students at 11 peer research universities. That's a meaningful sample, and it doesn't describe a generation hunting for shortcuts.
The more revealing data came from face-to-face conversations. In spring 2025, 13 Pitt faculty researchers sat down with 95 students across four campuses. Students could describe, with clear self-awareness, which AI uses were helping them learn and which weren't. They used it anyway — because the deadline was tomorrow, because the assignment felt like busywork, or because they'd hit the edge of their understanding with nowhere to turn.
“"I have a grade that I need to accomplish at the end of the day … If it's either I do it … versus fail? I'd rather do it."”
This issue draws on reporting and data from Inside Higher Ed.