1, Medinschi, and translated "Midinsky". Soviet educational historian. Graduated from Petersburg University. He has taught in Moscow Shanyavski University, Moscow II University, Moscow Lenin Teachers College and Moscow Communist Higher Education College. 1944 ——1948 is the director of the research department of educational history of the Institute of Educational Theory and Educational History of the Russian Academy of Educational Sciences; 1947 ——1952 is a member of the presidium of the College of Education. Mainly engaged in the study of educational history, but also studied the problem of off-campus education. He is the author of Encyclopedia of Off-campus Education, History of Education (co-authored with Constantinof and Chabayleva), Life Activities and Education System in makarenko, History of World Education, A Brief History of School Education in Russian Soviet Socialist Republic for 30 Years (co-authored with Constantinof), etc.

2. Ivan andreyevich Kailov, a famous educator in the former Soviet Union, was one of the representatives of Soviet pedagogy in the forties and fifties. 19 17 graduated from the physics department of Moscow university, and 1935 received a doctorate in education. 1937, successively served as the director of the teaching and research section of Moscow University and Moscow Lenin Teachers College. 1942- 1950 was the editor-in-chief of Soviet pedagogy. The book Pedagogy edited by him had a great influence on China.