The purpose of this study were to find out the effects of group art therapy program on self-esteem and adaptation of school life of elementary school student for the prevention of school violence. and its effectiveness in the prevention of school violence. Nowadays elementary school violence has become serious and has assumed different aspects from secondary school violence in its grouping, systematization, and aggressiveness. This research was conducted once a week for a total of twelve weeks(two hours) with an experimental group composed of twenty student offenders (14, maleㆍ6, female) selected from B elementary school in central seoul as the experimental group. Moreover, a similar group was selected as the control group from preliminary pretesting and left untreated. The method of analysis for effectiveness verification was to use sample matching t-test in order to measure the extent of the change and the average differences between before and after the program conducted. The results of the research confirmed that the experimental group meaningfully increased their sense of self-worth and the ability to adapt to school life; the group art therapy program of this research had a positive effect in the prevention and reduction of elementary school violence. Consequently, development and utilization of group art therapy programs can be considered to be very meaningful for the prevention and reduction of elementary school violence. In the foreseeable future, it is anticipated that group art therapy programs for elementary school violence will continue to be developed and utilized actively.