Abstract: The urgency of the problem under investigation is conditioned by the fact that the world is undergoing changes in all spheres of human activity. Our country is not an exception. Today, Russian society needs people with a sense of responsibility for the fate of the country, educated, able to cooperate, mobile, moral, pragmatic people who can make responsible decisions. The requirements for a modern school graduate are described in the federal state educational standards. They are related to the necessity of competence development. The study outlines the conditions of the experimental work and the results, aimed at the formation and development of social competence among of student self-government. The results of the experimental work, we revealed some of the student self-government features as one of the factors in the of student social competence formation and development; the structural model of student social competence formation and development was designed and implemented in the student self-government; the conditions for the effective of social competence formation and development are revealed; the criteria are determined according to which the level of student social competence is determined. The study materials may be useful to research the problems of secondary school student competence formation and development of competence of teachers, tutors, responsible for the formation and development of social competence among students and of the training course tutors. The materials of research may be used to develop the guidelines for school staff involved in the development of social competence among students.