Pedagogical diagnosis provides a scientific approach to the organization of methodical work with teachers, their professional and mutual development. Therefore, it plays an important role in the methodological, educational processes and in the school management process. The pedagogical diagnosis obtained as a system of studying the level of professional development of a teacher serves as a basis for identifying difficulties in the work, encouraging the search for alternative ways to overcome them. At the same time, it allows to identify the strengths of the teacher, to strengthen them and to identify specific ways and means of developing individualized methods of pedagogical activity and teaching model.