AI Matters
Why it matters
Study shows GPT-4o significantly boosts student grades on assignments
The Decoder The skills that earn top grades are the ones AI can fake best
An experiment with over 1,000 university students found that using GPT-4o boosted grades on a marketing assignment by nearly a full point on a five-point scale.
Why it matters
As AI tools make it easier to get high marks without deep understanding, schools may need to fundamentally change how they evaluate student learning.
Latest brief · Aug 31, 2026