The purpose of this study is to develop a social adaptation scale for adolescents. To achieve this purpose, the first preliminary scale was derived after selecting items based on prior research and verifying the content validity of the derived 3 factors (school adaptation, family adaptation, friends adaptation) and items." In order to develop the scale, a questionnaire survey was conducted on 217 teenagers living in Daegu City, South Korea. With collected data, a confirmatory factor analysis was conducted to examine the construct validity of the preliminary scale. Through this scale development process, this study finally developed a final scale consisting of 9 items in three components that constitute adolescent social adaptation. The social adaptation scale verified and developed in this study can help adolescents to lead a more vibrant life by confirming the degree of adaptation to their families, friends, and school. Furthermore, developed scale help to verify the effectiveness of social services provided to adolescents as an important tool. The social adaptation scale developed in this study will reliably measure and evaluate the performance of social adaptation targeting adolescents, and the relationship with schools, families, and classmates will be further improved. In addition, it is expected that systematic feedback information can be provided for the organization and operation of career education courses.