Juvenile Violence at school comes to serious crimes over the simple deviation. Because of rapid industrialization, adolescences fall into confusion of values and do not feel guilty and responsibility. Juvenile violence age group is younger and general. It\'s not limited girl students as well as boy students, especially girls students are increasing more. The problem is the trend of violence, that is there is no goal or motive, it goes on fun and play. Juvenile Violence is not only family issues but also school matters. It is the problem awaiting solution family, school and community altogether. In this study, it examines factors of juvenile violence and the actual condition and prevention programs of America and Korea. It is purpose to present how to develop juvenile violence and protect and eradicate it.