Generative AI Use Linked to Lower Exam Scores in 2026
A study found that while AI helped with homework, students saw exam performance drop.
Updated on Sept. 20, 2026 in Homework
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A 2026 study of more than 26,000 students found that while generative AI increased homework scores by 18 percent and improved completion times by 30 percent, it was linked to a significant decline in test results. Within six months of consistent AI use, monthly exam scores for these students decreased by 20 percent.
Why it matters
Experts warn that offloading academic tasks to artificial intelligence may hinder the development of critical thinking and cognitive growth. Building a deep foundation of knowledge requires independent mental effort that AI shortcuts appear to bypass.
The study followed 26,000 students across grades 7 to 12, documenting that while homework efficiency improved, exam performance fell by 20 percent within six months. Data from the eSafety Commission notes that 78 percent of Australian children now use AI assistants for tasks like writing or editing.
The players
eSafety Commission
An Australian government agency responsible for online safety and research into how children interact with digital tools.
The details
Students utilized generative AI to assist with homework and academic assignments, which initially masked gaps in subject mastery. Because deep thinking is required to build cognitive reserve, relying on AI for writing or translation impairs the brain's ability to retain information. Education systems are now evaluating shifts in assessment methods to combat this decline in student performance.
Timeline
The study of 26,000 students was published in 2026.
Student exam scores fell by 20 percent within six months of consistent AI use.
The Home Front
This research follows the pattern set by the eSafety Commission findings regarding widespread adoption of AI among younger students. It highlights a critical shift in the household landscape as education systems prepare to reform teaching and assessment methods.
Parents should monitor how children utilize AI tools for daily assignments to ensure the technology is used for supplemental support rather than replacing independent study. Consider setting specific times for screen-free homework to help students reinforce critical thinking skills.
The takeaway
Artificial intelligence can provide a temporary boost in homework efficiency, but it may come at the cost of long-term academic retention. Families can encourage better study habits by ensuring children treat AI as a secondary resource rather than a primary tool for completing schoolwork.
Further reading
Learn more about managing student technology use in our Homework guide.
Source note: This article includes information reported by Australian Broadcasting Corporation.
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