In the context of the development of data-based management, the transition to decision-making models based on Big Data technologies, in the context of the development of the national data management system, the issues of educational data analytics, the problems of the fragmentation of digital data analytics services, as well as the need to develop the teacher’s competencies in working with educational data. The structural and functional analysis of digital resources of educational data with which a modern teacher should work is presented. The competencies of the teacher in the field of analysis of educational data are characterized. The concept of “Pedagogy based on data” is considered as a new area of pedagogical knowledge and a methodological basis for the development of teachers' competencies in the field of data analysis. The author analyzes the possibilities of modernization and integration of digital data analytics services in the context of the implementation of the National Data Management System in Russia.