Background: Bullying is the problem that many schools face all over the world and can be considered a complex problem in school children lives. It affects all students, either bullies or victims, and those who attend the interpersonal violence and negatively affects their self-esteem. Aim of the study was to evaluate the effect of educational program on level of self -esteem of school age children and adolescents exposed to bullying. Design: This study followed a quasi- experimental research design. Setting: It was conducted at two basic education schools and one secondary school in Kafr Elsheikh city affiliated to Ministry of education. It was an online study through using Google forms Tools: The data of this study was collected using the following two tools: Tool I:Rosenberg Self-Esteem Scale (RSES) , Tool II: The Child Adolescent Bullying Scale (CABS):It consist of two parts: Part I: Socio-demographic data Questionnaire , Part II: The Child Adolescent Bullying Scale (CABS).Result: The main results revealed that the level of self-esteem and bullying of the studied subject were improved after implementation of the educational program. Also, there were a statistically significant negative correlation between total score of self-esteem and bullying of studied subject. Conclusion: The present study concluded that the educational program sessions played an important role in improving self -esteem and reducing bullying among school-aged students. Recommendations: implementing further educational program for students concerning effective coping strategies with stressors result from bullying was recommended.