aiqbench analysis
PEARL introduces a novel reinforcement learning framework that moves beyond simple answer correctness to train LLMs on progressive pedagogical guidance and multi-turn tutoring strategies. By simulating diverse student cognitive states and balancing competing educational objectives, this research directly addresses the gap between standard problem-solving models and effective Socratic teaching methods. The approach demonstrates competitive performance against leading proprietary systems while advancing the specific mechanics of machine learning for education.
PEARL: Training Socratic Tutors with Pedagogically Aligned Reinforcement Learning
arXiv:2605.29582v2 Announce Type: replace Abstract: Large Language Models (LLMs) show strong potential as educational tutors. Existing approaches typically train them to solve problems and provide correct answers, but this problem-solving-centered paradigm overlooks key requirements of effective tutoring: progressive guidance and the coordination of multiple pedagogical objectives across multi-turn interactions. Developing such tutors remains challenging because student behavior varies substantially with individual knowledge states, pedagogical effectiveness depends on multiple factors beyond final-answer correctness, and coordinating these objectives over tutor-student interactions is inherently difficult. To address these challenges, we propose PEARL, a PEdagogically Aligned Reinforcement Learning framework for training Socratic tutoring agents. First, we introduce a controllable student simulator that disentangles latent cognitive states from response generation, enabling simulation of diverse abilities and misconceptions. Second, we develop a pedagogically aligned reward model that jointly assesses pedagogical quality and objective correctness. Finally, we propose a stable multi-objective reinforcement learning approach that balances competing pedagogical objectives during tutor training. Experiments across multiple benchmarks show that PEARL performs competitively against tutoring-specific open-source systems and leading proprietary LLMs.
Abstract:Large Language Models (LLMs) show strong potential as educational tutors. Existing approaches typically train them to solve problems and provide correct answers, but this problem-solving-centered paradigm overlooks key requirements of effective tutoring: progressive guidance and the coordination of multiple pedagogical objectives across multi-turn interactions. Developing such tutors remains challenging because student behavior varies substantially with individual knowledge states, pedagogical effectiveness depends on multiple factors beyond final-answer correctness, and coordinating these objectives over tutor-student interactions is inherently difficult. To address these challenges, we propose PEARL, a PEdagogically Aligned Reinforcement Learning framework for training Socratic tutoring agents. First, we introduce a controllable student simulator that disentangles latent cognitive states from response generation, enabling simulation of diverse abilities and misconceptions. Second, we develop a pedagogically aligned reward model that jointly assesses pedagogical quality and objective correctness. Finally, we propose a stable multi-objective reinforcement learning approach that balances competing pedagogical objectives during tutor training. Experiments across multiple benchmarks show that PEARL performs competitively against tutoring-specific open-source systems and leading proprietary LLMs.
Machine Learning (cs.LG); Computation and Language (cs.CL)
arXiv:2605.29582 [cs.LG]
(or arXiv:2605.29582v2 [cs.LG] for this version)
https://doi.org/10.48550/arXiv.2605.29582 Focus to learn more arXiv-issued DOI via DataCite
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Full text under the publisher's open licence · 263 words
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