School violence has become a serious social issue in Korea, and this article was attempted to formulate a comprehensive and systematic conceptual framework for understanding and intervening school violence. For the purpose, school violence was defined, and existing theoretical approaches to school violence were organized into two major approaches (i.e., individual traits approach and socio-environmental approach), and research findings of each approach were reviewed and examined. Because of several problems and limitations inherent in each approach, the author proposed a new model of school violence, an integrated model, for the comprehensive and systematic conceptualization. The characteristics and implications of the proposed model for future research and intervention were discussed.