摘要:The aims of this study were to investigate the effects of self-efficacy on adolescents’ school adjustments and to identify mediating effects of depression and aggression. To this end, we conducted descriptive analysis, correlation analysis, and path analysis, using data from the 2008 Korean Youth Panel Survey undertaken by the National Youth Policy Institute. Our analysis shows that self-efficacy has positive effects on adolescents’ school adjustments, while both depression and aggression have negative effects on adolescents’ school adjustments. Moreover, both depression and aggression have a mediating effect when it comes to self-efficacy and school adjustments. These results imply that schools should consider developing a service delivery system by providing students with professional services that enhance self-efficacy. Moreover, such services will be more effective when they are combined with a program that reduces students’ depression and aggression.