Teachers, one of the basic vital human resources of the education system, play an important role in comprehensive restructuring actions carried out in education, as well as in developing schools, increasing the quality of education, and forming an effective school culture and climate. Therefore, determining the variables that affect the qualifications, orientations, performances, motivations, and attitudes of teachers in processes related to teaching is considered important. The purpose of this study is to investigate the mediating role of perceptions of collective efficacy in the relationship between teachers' professional burnout and organizational commitment. In this study, the authors investigated the factors that affect the relationship between teachers' perceptions of burnout and their organizational commitment. They tested whether the perception of collective efficacy has a mediating role in this relationship. The authors chose collective efficacy because it is an important issue for teachers.