The importance of a qualitative renewal of the additional professional training system for Russian language teachers of foreign schools gives rise to many problems of both theoretical and organizational nature. The following ones are particularly relevant: 1) the determination of professional deficits of teaching staff; 2) the identification of gaps in the current system of additional professional training for Russian as a foreign language teachers; 3) the correction of the identified professional deficiencies through additional educational programs on various directions and degrees of complexity. The solution to these problems is impossible in the absence of the concept of additional professional training system for Russian as foreign language teachers, formed on the basis of an ethno-oriented approach, which involves the development of models of advanced training for teaching specific ethnic groups. Since the organization of additional professional training for Russian as foreign language teachers of foreign schools is closely related to the type of educational institution in which the teacher works (national state, national non-state, weekend school, schools under the Russian Orthodox Church, etc.), it is advisable to consider the educational content of advanced training programs from two points of view: 1) from the point of view of the requirements for the training of the contingent of students, 2) from the point of view of the requirements for the personality of the teacher of a particular educational institution. Taking these factors into account is important, since it directly affects the nature of the training content and the technologies used. This study offers the options for modular educational programs for additional training in three fields of activity (subject, organizational, methodological, psychological).