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AI homework boost then exam drop study
Archived — this story has rotated out of today’s deck. It is kept here in full.
The gist
A China study of 27,000 students found AI use raised homework grades 18% but cut exam.
The finding questions whether AI homework help truly aids learning or just masks it.
Background
A large-scale study in China tracked secondary students using AI tools like Doubao and DeepSeek for homework. It found that while AI improved homework grades and reduced time spent, it led to significantly lower exam scores, suggesting that AI may be replacing learning rather than supporting it.
How it unfolded
- Aug 18, 2026The Economist publishes a graphic detail article on whether AI stops children from learning, highlighting the study.
- Aug 19, 2026Multiple outlets report the study's findings: homework grades up 18%, exam scores down 20% among AI users.
- Aug 20, 2026BigGo Finance reports the study details, including the 27,000-student sample and the drop in homework time from 64 to 45 minutes.
- Aug 21, 2026Inkl publishes a major study reveal, noting the 20% exam score drop and the 80% usage of AI platforms.
Who’s saying what
- Researchers
- The study's authors stress that AI should be used carefully, as it may hinder genuine learning.
- Experts
- Experts say AI may have broken the relationship between homework grades and knowledge retention for tests.
Still unverified
The study's methodology and sample representativeness are not fully detailed in the provided material.