Researchers introduce TutorMoments, a framework designed to measure if large language models can balance the pedagogical trade-off between providing support and encouraging independent reasoning. Built on real one-on-one math tutoring transcripts, the system replays decision points to evaluate model behavior against human-annotated ground truth.

The evaluation uses 462 de-identified transcripts from U.S. students in grades 2-7, annotated by experienced teachers who flagged moments requiring scaffolding or rigor. Models tested tend to over-help when given a plain prompt, but performance improves when the prompt explicitly defines the trade-off between helping and holding back. Despite improvements, LLMs still differ widely in reliability and use fewer strategies than human tutors, often failing to match the nuanced judgment of experienced educators. The team releases the dataset, code for the replay pipeline, and model replays to help researchers build AI tutors that adapt to student needs rather than doing the work for them.