--- title: A Brown professor's proof of mass AI cheating | daily.dev description: Brown University economics professor Roberto Serrano documented a dramatic drop in class performance when switching from a take-home to an in-person exam —... canonical: https://daily.dev/posts/a-brown-professor-s-proof-of-mass-ai-cheating-svi5oqisk twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: A Brown professor's proof of mass AI cheating | daily.dev og:description: Brown University economics professor Roberto Serrano documented a dramatic drop in class performance when switching from a take-home to an in-person exam —... og:url: https://daily.dev/posts/a-brown-professor-s-proof-of-mass-ai-cheating-svi5oqisk og:image: https://api.daily.dev/og/posts/sVi5oQisK.png og:image:alt: A Brown professor's proof of mass AI cheating og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # A Brown professor's proof of mass AI cheating **[The Next Web](https://daily.dev/sources/tnw)** · 3 min read · 1 upvotes · 0 comments ## Summary Brown University economics professor Roberto Serrano documented a dramatic drop in class performance when switching from a take-home to an in-person exam — from an average of 96 to 48 — providing concrete evidence that at least 50 students used AI to cheat on the midterm. Of 27 students who dropped the course or skipped the final after he announced the format change, 22 had scored a perfect 100 on the take-home midterm. Serrano has gone public with the data, framing widespread AI cheating as a societal risk. The case reflects a broader trend: Princeton surveys show nearly 30% of students admit to AI-assisted cheating, and universities are still struggling to adapt their assessment methods. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [College prof hides prompt to catch AI cheaters, finds human nature is pretty much as we thought](https://daily.dev/posts/college-prof-hides-prompt-to-catch-ai-cheaters-finds-human-nature-is-pretty-much-as-we-thought-uwcoaymm6) · The Register · 0 upvotes · 0 comments --- Tags: [#ai](https://daily.dev/tags/ai), [#chatgpt](https://daily.dev/tags/chatgpt) [View this post on daily.dev](https://daily.dev/posts/a-brown-professor-s-proof-of-mass-ai-cheating-svi5oqisk) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"A Brown professor's proof of mass AI cheating","url":"https://daily.dev/posts/a-brown-professor-s-proof-of-mass-ai-cheating-svi5oqisk","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/a-brown-professor-s-proof-of-mass-ai-cheating-svi5oqisk"},"datePublished":"2026-07-08T22:53:18.800Z","dateModified":"2026-07-08T22:53:38.355Z","description":"Brown University economics professor Roberto Serrano documented a dramatic drop in class performance when switching from a take-home to an in-person exam —...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/86b5f4499b36ade73d325aa301af4543?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/86b5f4499b36ade73d325aa301af4543?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"The Next Web","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"The Next Web","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/tnw","url":"https://daily.dev/sources/tnw"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/a-brown-professor-s-proof-of-mass-ai-cheating-svi5oqisk","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":1},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"ai,chatgpt","timeRequired":"PT3M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"The Next Web","item":"https://daily.dev/sources/tnw"},{"@type":"ListItem","position":3,"name":"A Brown professor's proof of mass AI cheating"}]} ```