 They generally operate on weekends, after school, and other times not during the hours of operation of the day schools.The Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT), as of 1985, encouraged the opening of "hoshū jugyō kō" in developed countries.It encouraged the development of full-time Japanese ("person," not "language") day schools, in Japanese "nihonjin gakkō", in developing countries.