The skills that earn top grades are the ones AI can fake best
GPT-4o boosted student grades by nearly a full point — but Bocconi researchers found no evidence of actual learning. The skills that earn top marks are precisely the ones AI can fake.
Why it matters
AI is gaming educational assessment systems, raising questions about whether grades now measure capability or just tool access. This matters for practitioners hiring graduates and institutions credentialing AI-era talent.
The key facts
10 to knowGPT-4o improved marketing assignment grades by ~1 point on a 5-point scale
Study involved 1,053 Bocconi University students
No independent learning was tested or confirmed
Research suggests AI-assisted performance without independent thinking causes long-term harm
The skills that grade well are the ones most vulnerable to AI substitution
GPT-4o boosted marketing assignment grades by ~0.9 points on 5-point scale (Bocconi University, 1,053 students)
Grade improvement achieved without evidence of independent learning or skill retention
Studies indicate AI-assisted performance without critical thinking causes long-term learning harm
The skills that score highest are the ones most susceptible to AI simulation (marketing, writing, analysis)
Implications: credential inflation, employer trust erosion, workforce skill gaps at scale
Go to the source
The Decoderthe-decoder.com
Publisher excerpt: GPT-4o boosted grades on a marketing assignment by nearly a full point on a five-point scale in an experiment with 1,053 Bocconi University students. Whether they actually learned anything wasn't tested. Other studies suggest that AI-assisted performance without independent thinking does long-term…