Microsoft and University of Illinois introduce StudentSim to build realistic student replicas for AI tutor training
Researchers at Microsoft and the University of Illinois released StudentSim, a two-stage system that builds individualized student replicas from limited data (using Alibaba's Qwen3-4B-Instruct as a base) to simulate both typical mistakes and responsiveness to instruction. Tested on public datasets in chess, English-as-a-foreign-language and math, StudentSim outperformed a prompted GPT-5.4 in predicting behavior and yielded better tutor training in a chess proof-of-concept; the code is available on GitHub.