This research is aimed at verifying the effectiveness of a training program in developing the professional performance of social workers in dealing with the negative effects of school bullying towards autistic students. The researcher adopted a quasi-experimental approach. The sample includes (22) social workers working with autistic students in Beni-Suef City (experimental group). The training program was implemented for three months through weekly sessions with the experimental group. The researcher used a professional performance scale that has four dimensions as shown: scientific knowledge and professional information, professional skills and abilities, the professional directions. and professional experiences. The results of the research training program succeeded to develop this professional performance.