Signal AI Tutoring Outperforms In-Class Active Learning — RCT / arXiv Systematic Review

Summary

A randomised controlled trial found AI tutoring produced significantly more learning than classroom active learning, and in less time. The study tested LearnLM, Google's educational AI model, in UK classrooms, in a collaboration involving the LearnLM Team, the ed-tech organization Eedi, and researchers including Craig Barton. The paper, posted to arXiv in December 2025 under a Creative Commons BY 4.0 license, describes the trial as exploratory and emphasizes that AI tutoring can safely and effectively support students. A systematic review posted to arXiv reached compatible conclusions.