New AI tutor achieves 0.71-1.30 SD effect size in Dartmouth course [pdf]

AI-assisted Education, Learning Analytics, Intelligent Tutoring Systems(intextbooks.science.uu.nl)view on HackerNews

intelligent textbookslarge language modelsformative assessmentintelligent tutoringretrieval-augmented generationreading engagementconstructed-response assessment

Author: jonahbard

Date: 7/5/2026

Article Summary:

This study presents Phosphor, a digital learning platform that integrates LLM-graded formative assessment into instructional content, and reports results from a deployment with 151 students across three sections of Introductory Statistics at Dartmouth College.