The intensity of globalization and internationalization stimulates activity of population in the world. As a consequence, the number of Russian citizens living and getting education beyond the boundaries of the Russian Federation increases. Special load in this case is on the municipal structures rendering educational services in the Russian language. Quality improvement of teaching Russian and status of educational services in the Russian language are the social priorities and assume serious rearrangement of additional training of Russian language teachers. In this regard, it would be relevant to evaluate professional competences of Russian language teachers in schools abroad; to detect competence lacunas of additional professional education; to correct the detected professional deficits by additional educational programs of various specializations and degrees of complexity. This work is aimed at detection of development strategies of the Center as a tool of distance support for Russian schools abroad. The research methods in this work are theoretical analysis of psychologic and pedagogical, sociological, economic publications devoted to the considered problem; analysis of practices of distance support courses in Russia and abroad; surveying, testing users of existing courses; analysis of expert opinions and quality appraisals of online training; analysis of statistic data. The activity of such Center would promote implementation of the Russian Schools Abroad concept, providing opportunity of annual systematic diagnostics of state of educational and methodological resources of foreign schools, supplying Russianists with modern methodological tools, allowing foreign schools to systematically raise the level of professional competences of teaching staff.