GenAI availability produced no significant differential effect on final grades in more GenAI-susceptible courses relative to less susceptible ones¶

Claim · All claims
Evidence · 1 study · causal r2 · q2
Currency · newest study 2026 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q2 i? Comparing post-AI to pre-COVID periods, the grade difference between fully susceptible and fully non-susceptible courses was 0.03 grade points (SE = 0.052, not significant), with the bounded estimate ranging 0.030–0.045. → Dumlao 2026

Evidence¶

Dumlao 2026¶

Dumlao, J. M. Z., Wang, M., Xie, Z., Hu, J., Bar, I., Chaney, G., III, Gold, H., & Teplitskiy, M. (2026). Generative AI Availability, Grades, and Student Satisfaction at a Large University. arXiv. https://arxiv.org/abs/2607.21534 doi:10.48550/arxiv.2607.21534

q2 · i? · causal · r2

Difference-in-differences analysis of administrative grade records from a large U.S. university (fall 2016–fall 2025), using a TWFE model with course, student, and semester fixed effects and a COVID-window interaction. The preferred estimate was "0.03 (SE = 0.052, n.s.) grade points"; the persistent-COVID bound was 0.045 (SE = 0.026, p < 0.1).

"Comparing post-AI to the pre-COVID period, the difference between final grades in fully susceptible (Susceptibilityc = 1) and fully non-susceptible (Susceptibilityc = 0) courses was 0.03 (SE = 0.052, n.s.) grade points on average."

Discussion¶

Related Claims¶

• The share of students earning at least an A rises in more susceptible courses after ChatGPT under the preferred bound, but the shift fails parallel trends and is read as descriptive, not causal — related
• Positive average grade effects appear only under COVID-laden treatment anchors, indicating such readings reflect the COVID shock rather than ChatGPT — related
• More GenAI-susceptible courses show no raised grade floor after ChatGPT: passing-margin and failing/withdrawal probabilities are null under both COVID assumptions — related
• Effects of GenAI availability on self-reported understanding are insignificant; effects on interest are significant only under the transient-COVID assumption — related
• Grade effects of GenAI availability do not differ across terciles of students' prior academic preparation, robust across multiple ability proxies — related