The article deals with the problems of realizing the metadisciplinary approach to Russian schoolchildren. The problems are studied in methodological, methodic and practice-oriented aspects. The article also suggests their possible solutions. Within the framework of the research, some intermediate conclusions are made, which attract researchers' attention and allow focusing on current problems of the metadisciplinary approach and its implementation in the school educational process. The implementation of a system of educational "metadisciplinary" tasks is justified as a didactic means of the educational process, which ensures perceiving the information from different school disciplines and building skills to work with it. The authors shortly clarify the role of the terms "metadisciplinarity" and "interdisciplinarity" in Russian and foreign research works. There is also an example of a "metadisciplinary" task as a didactic means of teaching schoolchildren within the framework of socio-humanitarian disciplines. A special place in the article is given to the professional competence/identity of a schoolteacher, who is considered to have much influence on the successful achievement by schoolchildren of a metadisciplinary result in the educational process. The article contains views of foreign scientists. © 2017.