<![CDATA[Background: Health, which refers to a complete physical, mental, and social well-being, enables individuals to live productively in their social and economic contexts. Recently, Indonesian society has been alarmed by the increasing number of cases related to children's health, both physically, such as the rising number of children experiencing obesity and stunting, and psychologically. Another urgent issue requiring special attention is the prevalence of school-aged children experiencing depression due to bullying. The incidence of bullying among students continues to rise across various educational levels, necessitating preventive measures and effective interventions. Objective: To analyze the level of students’ knowledge regarding bullying and to evaluate the effectiveness of a mental health literacy intervention. Methods: Employing a one-group pre-test–post-test quantitative descriptive design, this study involved 49 respondents selected through purposive sampling from a total population of 132 students at SMA Muhammadiyah 6 Surakarta, consisting of 19 regular students and 30 inclusive students with various conditions (slow learners, autism, dwarfism, physical disabilities, low vision, speech impairments, and hearing disorders). The intervention consisted of a 45-minute interactive mental health literacy session covering the definition, forms, impacts, and prevention of bullying. Knowledge was assessed using a structured questionnaire (Cronbach’s Alpha = 0.87) administered immediately before and after the session. Data were analyzed descriptively using IBM SPSS Statistics version 26. Results: The findings indicate that students' knowledge levels fall within a high category, with the proportion of correct answers per item reaching 85–93.9%. Students understand the definition, forms, impacts, as well as prevention and reporting steps related to bullying. Conclusion: The mental health literacy program has proven effective in enhancing collective awareness, empathy, and the courage to report incidents within the school environment. It can be concluded that the mental health literacy intervention plays a crucial role in fostering a safe and inclusive school culture.]]>
