OpenLearnLM Benchmark: A Unified Framework for Evaluating Knowledge, Skill, and Attitude in Educational Large Language Models. - Unggi Lee; Sookbun Lee; Heungsoo Choi; Jinseo Lee 002; Haeun Park; Younghoon Jeon; Sungmin Cho; Minju Kang; Junbo Koh; Jiyeong Bae; Minwoo Nam; Juyeon Eun; et al. (CoRR, 2026)