@inproceedings{lee-etal-2026-llm, title = "Let {LLM} Tutors Ask First: Proactive {LLM}-Based Tutoring at Scale in a 1,500-Student Online Classroom", author = "Lee, Jonghoon and Youn, Geonjae and Lee, Seongmin and Im, Chaemoon and Kim, Joongheon and Yoo, Chuck", editor = "Li, Yunyao and Rehm, Georg and Tu, Mei", booktitle = "Proceedings of the 64th Annual Meeting of the {A}ssociation for {C}omputational {L}inguistics ({ACL} 2026)", month = jul, year = "2026", address = "San Diego, California, USA", publisher = "Association for Computational Linguistics", url = "https://preview.aclanthology.org/ingest-acl/2026.acl-industry.107/", pages = "1541--1554", ISBN = "979-8-89176-394-4" }