Introduction. The phenomenon of professional burnout manifests itself in a wide range of professions, and its consequences affect the professional health of employees, their work motivation, labor productivity, etc. Therefore, a significant number of heads of organizations, including educational organizations, face the problem of professional burnout of employees. The modern professional activity of a teacher is characterized by a constant change in the conditions for performing professional duties, which are associated with a continuous increase in the load on their mental adaptation mechanisms. In the context of this study, the occurrence of professional burnout was considered as a result of complications in the adaptation process. Therefore, the hypothesis of this study was the assumption that the insufficient level of development of the adaptive potential of a person, in particular a teacher, is one of the main prerequisites for the occurrence of professional burnout. Materials and methods. In the course of the psychological study, the following methods were used: a burnout questionnaire (Maslach Bornout Inventory, MBI, adapted by N. E. Vodopyanova, E. S. Starchenkova, 2001), a multilevel personality questionnaire "Adaptiveness" developed by A. G. Maklakov and S. V. Chermyanin, the method "Integral satisfaction with work" Fetiskin N. P., Kozlov V. V., Manuilov G. M., the method "Communicative and organizational inclinations" V. V. Sinyavsky, V. A. Fedoroshin (KOS), R. Cattell's 16PF multifactorial personality questionnaire, a method for diagnosing social and psychological attitudes of a person in the motivational and need sphere O. F. Potemkina, Eysenck Personality Questionnaire EPI. For a comparative analysis of general education organizations teachers with high and low levels of professional burnout, we used Student's t-test, correlation analysis (r-Pearson correlation coefficient). Results. The study was conducted on the basis of the Volosovsky municipal district, in several educational organizations of the district. In total, the personal characteristics of 80 teachers of educational organizations of the district, with different experience in teaching, were studied. The results of the study presented in the article prove that the insufficient level of development of the adaptive potential of the teacher's personality is one of the prerequisites for the occurrence of professional burnout. Discussion and conclusion. In this article were identified the psychodiagnostic tools, which allowed to develop a system of measures in the educational organization to prevent and to overcome the teacher’s professional burnout. There were made recommendations on creation of a system of psychological and pedagogical support for teachers of general education organizations, in the context of this study.