The purpose of the study is to reveal the effects of School-based Professional Learning Communities(School-based PLCs) on students’ non-cognitive skills,. In particular, this study tried to find the possibility of PLCs as a factor in determining effective schools by revealing the paths of effectiveness in the processes of schooling. This study conduct statistical analysis of multilevel structural equations modeling(MSEM) were performed using data from the 4th and 6th years of the Gyeonggi Education Panel Study(GEPS). It confirmed the effect of School-based PLCs influencing non-cognitive skills, and established the path. As a result of the analysis, non-cognitive skills, - students' self-esteem, school satisfaction and discriminatory experience - showed a positive influence. First, as School-based PLCs developed, it had a positive effect on teachers' satisfaction and enthusiasm that their students' perceived. Second, this advanced School-based PLCs improve the Teacher-Student Relationship. School-based PLCs were playing a role in determining effective schools that contributed to students’ non-cognitive skills, while improving school culture. Finally, School-based PLCs was effective in the non-cognitive skills of students, which was found to increase self-esteem and school satisfaction and to alleviate the discrimination. The findings suggest the need to approach PLCs as practical activities in schools to improve the school education through reorganization of school culture beyond the status of alternative training to enhance teacher expertise.