On the issue of establishing the parameters for defining a philosophical school

Introduction. At present, the issue of defining the parameters of attribution to a philosophical school in the historical and philosophical aspect continues to be debatable. This issue can be presented both in a broad sense - defining the parameters of attribution to a philosophical school common to philosophical schools, and in a narrow sense – the possibility of identifying the “Moscow Metaphysical School”. Theoretical analysis. A weighty argument that confirms the existence and development of the “Moscow Metaphysical School” is the possibility of identifying in the works of the authors a conceptual model of sobornost, including the socio-ontological aspect, starting with the works of Vladimir Solovyov, and the socio-practical aspect, actualized in the form of a philosophical community in Nikolai Grot, and a university community in Sergei Trubetskoy. The conceptual model of sobornost formed the basis for identifying the parameters of a philosophical school. Conclusion. The “Moscow Metaphysical School” corresponds to the designated parameters of civilizational identity, inclusion in the historical-cultural and civilizational field, connection with previous philosophical schools and communities, influence on subsequent philosophical schools and communities, presence of a valuable object of philosophical research, community without external coercion to unity, intersection not only along the line of science, but also along the line of destinies of philosophers, the presence of a value scale shared by all members of the philosophical school, mutual citation, external and internal communications, innovation in philosophy.