After the Bolshevik coup in late 1917, when the new Soviet regime began persecuting religion and spiritualism, the School continued operating clandestinely. However in 1926, the School and the domicile of its members were raided by Soviet authorities: the documents destroyed and those who were linked the School were arrested.
Following the Bolshevik coup in late 1917, when the new Soviet government began suppressing spiritual movements, the School continued to operate underground. Nevertheless, in 1926, the School's headquarters and its members' homes were raided by Soviet authorities: documents were destroyed, and those suspected of connections to the School were detained.