Bullying is a serious problem that affected children^s mental health and well-being. The number of bullying cases in Indonesia is among the highest in Asia. However, the bullying prevention programs are limited and have not decreased the number of bullying cases in Indonesia. Therefore, this study aims to design the bullying prevention psychoeducational intervention for the victims. This mixed-methods study using internet-based data collection was conducted in Bandung City, West Java, Indonesia. The study participants were elementary students (N = 3, two girls and a boy) aged nine years old who were school bullying victims. Bullying actions were measured by the reported frequency of experiencing being bullied by other children at school. Children also reported their perception of school climate. Two focus group discussions were conducted for needs analysis and discussed the design, which was prepared based on the need analysis results. Results showed that group psychoeducational intervention was needed to assist children from being victimized. Group psychoeducational intervention was designed through two phases of development (conceptual phase and operational phase), where each phase includes three steps. Results were discussed using Furr^s model for the design of a structured group psychoeducational program.
