Stanford expands K‑12 AI repository

Stanford’s Artificial Intelligence Hub for Education has expanded its K-12 research repository to 1,278 studies, giving schools a larger index of evidence on classroom artificial intelligence. (scale.stanford.edu) (edtechinnovationhub.com) EdTech Innovation Hub reported that Stanford added 133 papers in the latest update. The repository now covers pre-print and peer-reviewed studies focused on generative artificial intelligence in United States prekindergarten through grade 12 education. (edtechinnovationhub.com) (scale.stanford.edu) The repository is run through the SCALE Initiative at the Stanford Accelerator for Learning. Stanford says users can sort studies by categories including descriptive research, impact studies such as quasi-experiments and randomized controlled trials, and review research. (acceleratelearning.stanford.edu) (scale.stanford.edu) Artificial intelligence in this context means software that can generate text, feedback, lesson materials, or tutoring prompts from patterns in large datasets. Stanford built the repository to help district leaders, policymakers, researchers, and technology companies find studies on how those tools are being used and tested in schools. (scale.stanford.edu 1) (scale.stanford.edu 2) Stanford’s own 2026 review says the research base is expanding quickly, but strong cause-and-effect evidence remains limited. The report found that as of October 2025 the repository held more than 800 relevant papers, yet only 20 studies provided strong causal evidence on outcomes for students or educators. (scale.stanford.edu 1) (scale.stanford.edu 2) That gap tracks with the speed of school adoption. Stanford said in a separate 2025 study with SchoolAI that researchers analyzed behavioral data from more than 9,000 United States teachers over a 90-day period to examine how educators were actually using artificial intelligence tools. (schoolai.com) (forbes.com) Stanford launched the hub in early 2025 as districts were writing rules for student use, assessment, and teacher workflows. A Stanford news release said the repository was designed so school leaders could search evidence before making purchasing or policy decisions. (scale.stanford.edu) (govtech.com) The latest expansion means the index is growing faster than the pool of rigorous evaluations. For schools weighing new artificial intelligence products, Stanford’s repository is becoming easier to search at the same time the underlying evidence remains uneven. (edtechinnovationhub.com) (scale.stanford.edu)