1893 Kailov was born into a teacher's family in Ryazan, Russian Federation. 19 17 graduated from the Department of Mathematics and Physics of Moscow University, majoring in natural science, and joined CPSU in April of the same year. 1937 mainly engaged in agricultural education.

1937, successively served as the director of the teaching and research section of Moscow University and Moscow Lenin Teachers College.

1942- 1950, editor-in-chief of Soviet pedagogy magazine.

1946- 1966, President of the Academy of Educational Sciences of the Russian Federation.

1949- 1956, Minister of Education of the Russian Federation.

1In August, 966, he was appointed as the first president of the former Soviet Academy of Educational Sciences.

Kailov received his doctorate in education from 1935 and became an academician of Russian Academy of Education from 1943. He was elected as an alternate member of the former CPSU Central Committee, a member of the Central Inspection Commission and a former representative of supreme soviet of the ussr. 1978 died at the age of 85.

Kailov wrote many books in his life, such as the great educator Jan Ames Comenius, the two-volume Dictionary of Education and the four-volume Encyclopedia of Education. He also compiled a variety of textbooks and teaching reference books for ordinary schools and institutions of higher learning. Among them, Pedagogy, edited by him, is the most widely circulated and influential (there are two versions in Russian: 1948 and 1956).