The purpose of this study was to examine whether a forgiveness group counseling program could be effective in encouraging school-bullying victims to understand and to forgive bullies. The subjects in this study were 22 5th grade students who were selected from among 300 fifth graders in K elementary school in the city of G. After a survey was conducted to identify school-bullying victims, the eleven children were assigned to an experimental group and a control group respectively. The instruments used in this study were Enright's Forgiveness Inventory(1995), Jang's Group-Bullying Victim Scale (2001) and Park's Revenge Scale(2005). The findings of the study were as follows; First, the experimental group got statistically significantly better scores in the revenge posttest than in the pretest, and this effect was sustained after four weeks later. Second, the experimental group showed statistically significantly better scores in the forgiveness posttest than in the pretest, and this effect was remained after four weeks later. The meaning of this study could be described as below; First, the greatest meaning of this study was that unlike earlier studies, it attempted to use a forgiveness program geared toward school-bullying victims and to evaluate its effect. Second, a guidebook for teachers and a workbook for students were provided in the form of lesson plans in order to ensure the successful application of the program. Third, the forgiveness program had an effect on easing the revenge of the abused children, and that would make it possible to cut off the vicious circle of turning abused hildren into bullies, as bullied children were likely to bully not only their bullies but also others.