The monograph traces the history of the Lancaster school in Russia in the first quarter of the 19th century. (1814-1826). The author characterizes the new methodology adopted according to British models - the system of mutual education, the specifics of approving Lancaster schools on Russian soil, reveals the incentives for the imperial authorities to abandon this reform and assesses its importance for the state and society. The monograph is addressed to historians, teachers, teachers and students of historical and pedagogical faculties of universities, teachers and students of secondary educational institutions, everyone interested in history.