<![CDATA[Bullying in schools is an issue related to the safety, well-being, and character development of students, requiring strategies that are not only responsive but also preventive through the strengthening of school culture. This study aimed to analyze the implementation of the Character Building program as a strategy for addressing bullying at Saint John’s Gading Serpong Senior High School. The study employed a qualitative approach with a case study design. The participants consisted of 18 informants, including 7 main informants comprising the principal, vice principal, counselor, and 4 teachers, as well as 11 students as supporting informants. Data were collected through in-depth interviews, direct observation, and documentation, and were analyzed through data condensation, data display, conclusion drawing, and open, axial, and selective coding based on 12 research indicators. The findings indicate that the implementation of Character Building operates through three main mechanisms: character-value internalization, positive behavioral habituation, and school-system reinforcement. The field findings also identified one form of verbal bullying involving teasing or comments about peers’ backgrounds; the case was reported as minor and addressed through collaboration among teachers, the disciplinary team, and students. The program was reinforced through teacher role modeling, anti-bullying regulations, counseling services, monitoring, communication with parents, and periodic evaluation. The study concludes that Character Building is implemented as an integrated character education system embedded within school culture to support the prevention and handling of bullying. Practically, the program should maintain integration among its components while increasing students’ active participation.]]>
