Exploring the Effectiveness of Using LLMs for Automated Assessment of Student Self Explanations in Programming Education

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Main Authors: Lekshmi-Narayanan, Arun-Balajiee, Hassany, Mohammad, Brusilovsky, Peter
Format: Preprint
Published: 2026
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author Lekshmi-Narayanan, Arun-Balajiee
Hassany, Mohammad
Brusilovsky, Peter
author_facet Lekshmi-Narayanan, Arun-Balajiee
Hassany, Mohammad
Brusilovsky, Peter
contents Worked examples are step-by-step solutions to problems in a specific domain, offered to students to acquire domain-specific problem-solving skills. The effectiveness of worked examples could be enhanced by combining them with self-explanations, which ask students to explain rather than passively study each problem-solving step. The main challenge of this approach is assessing the correctness of the student's explanations. In the prevailing approach, student explanations are judged by their semantic similarity to an instructor's or domain expert's explanation. Given recent advances in LLM-based automated scoring, it remains unclear whether semantic similarity methods are still the most effective technique to automatically score textual student responses like essays or code explanations. Comparing these methods also requires quality datasets that offer distinctive features such as balanced class distributions and domain-specific labeled data for automated scoring tasks. In this paper, we present a rigorous comparison between LLMs and semantic similarity used for automated scoring, framed as a binary classification task.
format Preprint
id arxiv_https___arxiv_org_abs_2605_21614
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Exploring the Effectiveness of Using LLMs for Automated Assessment of Student Self Explanations in Programming Education
Lekshmi-Narayanan, Arun-Balajiee
Hassany, Mohammad
Brusilovsky, Peter
Human-Computer Interaction
Machine Learning
Worked examples are step-by-step solutions to problems in a specific domain, offered to students to acquire domain-specific problem-solving skills. The effectiveness of worked examples could be enhanced by combining them with self-explanations, which ask students to explain rather than passively study each problem-solving step. The main challenge of this approach is assessing the correctness of the student's explanations. In the prevailing approach, student explanations are judged by their semantic similarity to an instructor's or domain expert's explanation. Given recent advances in LLM-based automated scoring, it remains unclear whether semantic similarity methods are still the most effective technique to automatically score textual student responses like essays or code explanations. Comparing these methods also requires quality datasets that offer distinctive features such as balanced class distributions and domain-specific labeled data for automated scoring tasks. In this paper, we present a rigorous comparison between LLMs and semantic similarity used for automated scoring, framed as a binary classification task.
title Exploring the Effectiveness of Using LLMs for Automated Assessment of Student Self Explanations in Programming Education
topic Human-Computer Interaction
Machine Learning
url https://arxiv.org/abs/2605.21614