This study addresses the limited research on the implementation of Islamic Education Policy (IEP) for bullying prevention in pesantren (Islamic boarding schools), despite its critical role in shaping students’ moral development and institutional well-being. The research aims to analyze and compare the effectiveness of preventive, detective, and curative IEP models in three pesantren—Nujumul Huda, Darul Kamilin, and Al-Falah—while identifying key supporting and inhibiting factors and broader policy implications. Utilizing a qualitative multiple case study design, the study engaged 33 respondents selected through purposive and snowball sampling. Data were collected via in-depth interviews, participant observation, and document analysis, and processed using Miles and Huberman’s thematic framework with support from NVivo 12 Plus software. Findings indicate that the integration of preventive, detective, and curative strategies rooted in Islamic moral teachings substantially reduces bullying incidents and promotes akhlaq al-karimah (noble character) among students. Among the cases studied, the Al-Falah model emerged as the most effective, due to its psycho-educational-religious approach that emphasizes participatory engagement and restorative practices. The study concludes that sustainable bullying prevention in pesantren requires contextual, holistic policy integration that aligns national education frameworks with the cultural and religious dynamics of Islamic boarding schools. Theoretically, the research advances the integration of Social-Emotional Learning, Human-Centered Learning, and the Critical Pedagogy of Care within Islamic educational contexts. Practically, it offers adaptive policy recommendations for pesantren leaders and government stakeholders to reinforce anti-bullying initiatives anchored in Islamic values and community participation.