Educational institutions refer to places and educational administrative organs that carry out all kinds of educational work. Narrow sense refers to all kinds of schools at all levels. Broadly speaking: (1) schools of various types and degrees (such as ordinary schools and professional schools); (2) Preschool education institutions (such as nurseries and kindergartens); (3) Off-campus educational institutions (such as children's palaces and counseling stations); (4) Adult education institutions (correspondence universities, TV universities, broadcasting universities, adult self-study examination stations, etc.). ); (5) Educational administrative organs at all levels (Ministry of Education, Department of Education, Education Bureau, Education Department, etc. ); (6) Educational research institutions.