Much research points out that maltreatment of children is one of the main causes of school violence committed by adolescents. Maltreatment of children has significant influence on those children that commit school violence. Not every adolescent who has experienced maltreatment in his/her childhood becomes an offender and engages in school violence; that is, something works between the maltreatment experience of adolescents and the commission of school violence. This study verified the effect of maltreatment of children by parents in relationship to their committing school violence; and further, verified the mediating effect of self-control. For this purpose, this study utilized data from the “Field Survey on Maltreatment and Juvenile Delinquency Committed by Adolescents” conducted by the Korean Institute of Criminology in 2008. The data were collected through self-reporting questionnaires from elementary, middle, and secondary school students in Seoul City. A total of 1,418 students were analyzed with SPSS 18.0 among 638 elementary school students, 697 middle school students, and 723 high school students. As a result, it was found that emotional maltreatment rated the highest, which was 67.1%, followed by neglect, which was 46.9%, and physical maltreatment, which was 31.4%. Also, school violence committed by adolescents showed a high ratio of 19.5%. Baron and Kenny tested a research model and they found that the experience of adolescent maltreatment by parents had a significant impact on their committing school violence. Maltreatment of children by parents resulted in a significant impact on their self-control, which in turn generated significant impact on their committing school violence. It was proven that self-control has a partial mediating effect between the experience of maltreatment by parents and children committing school violence. Based on the research results, this study discussed the implication of practical intervention by parents, community, and school.

In the mean time that wrong child raising, excessive punishment, maltreatment and violence occurred at home are presented as important factors that cause juvenile delinquency, this study analyzed the mediating effect of self control between children’s maltreatment experience from their parents and their committing school violence.
The analysis results are as follows.
First, as a result of field survey on child maltreatment from parents, emotional maltreatment took 67.1%, the most part, followed by neglect, which took 46.9%. And the 3rd was physical maltreatment, which took 31.4%.
Second, as a result of field survey on adolescents’ committing school violence, those who committed school violence took 19.5%, which was lower than that of previous studies: 54.3% presented by Choonbeom Cho & Namhong Cho (2011); 28% presented by Youngshin Park & Euicheol Kim (2001); and 23.4% which was presented in the field survey by Youth Violence Prevention Foundation (2011). Although it was lower than school violence rate presented in previous researches, it shows the serious level of school violence committed by adolescents.
Third, as for the effect of children’s maltreatment experience from their parents on self control, emotional maltreatment and neglect had negative (-) effect on self control. Meanwhile, physical maltreatment did not have significant impact on self control. That is, the adolescents who frequently experienced emotional maltreatment and neglect have lower self control.
Fourth, as for the effect of self control on committing school violence, high self control of students had negative (-) effect on their committing school violence. That is, those who have high self control hardly commit school violence.
Fifth, as for the effect of children’s maltreatment experience from their parents on their committing school violence, physical maltreatment and neglect had positive(+) effect on their committing school violence. On the other hand, emotional maltreatment did not have significant effect on their committing school violence. That is, the more they get physical maltreatment from parents and the more they were neglected by their parents, the more adolescents school violence increased.
Sixth, as a result of verifying mediating effect of self control between children’s maltreatment experience from their parents and their committing school violence, physical maltreatment, emotional maltreatment, and neglect had direct impact on their committing school violence and also had indirect impact through self control as a mediator. Therefore, the variable of self control was shown as an incomplete mediating variable.
Through these results, it was found that maltreatment from the parents and committing school violence are not separate one but had high correlation each other. Therefore, it is required to provide solutions to increase social function of adolescents who have maltreatment experience and reduce their problems.

Limitations of the research
First, it was required to overcome the limitations of sampling. Since the subjects were restricted to adolescents in the Seoul region, the study bears the limitation of being a sample of adolescents representing Korean society. Thus, we have to seek a plan that will generalize the research by expanding the scope of the research nationwide.
Second, since the survey factors included the experiences of maltreatment by parents of their children/adolescents and school violence that they were reluctant to reveal, there is a possibility that respondents replied to their maltreatment experiences that depended on their subjective judgment or minimization of their commitment to school violence. Therefore, in order to elicit candid replies from adolescents, quantitative and qualitative surveys should be done together.
Third, as this research verified self-control only among various mediating variables that affect the child maltreatment experience and children committing school violence, it is required to complement the research on this aspect.
Fourth, this research has been done focusing on the commission of school violence. However, we should not exclude the possibility that school violence offenders may also be victims of school violence at the same time. Therefore, it is required to approach both school violence offenders and victims at the same time.