, or , are supplementary Japanese schools located in foreign countries for students living abroad with their families. Hoshū jugyō kō educate Japanese-born children who attend local day schools. They generally operate on weekends, after school, and other times not during the hours of operation of the day schools. The Ministry of Education, Science, Sports and Culture (Monbusho), 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. In 1971, there were 22 supplementary Japanese schools worldwide. By May 1986, Japan operated 112 supplementary schools worldwide, having a total of 1,144 teachers, most of them Japanese nationals, and 15,086 students. The number of supplementary schools increased to 120 by 1987. As of April 15, 2010, there are 201 Japanese supplementary schools in 56 countries. Operations These schools, which usually hold classes on weekends, are primarily designed to serve the children of Japanese residents temporarily residing in foreign countries so that, upon returning to their home country, they can easily re-adapt to the Japanese educational system. As a consequence, students at these schools, whether they are Japanese nationals and/or permanent residents of the host country, are generally taught in the age-appropriate Japanese curriculum specified by the Ministry of Education, Culture, Sports, Science and Technology (MEXT). Article 26 of the Constitution of Japan guarantees compulsory education for Japanese children in grades one through nine, so many weekend schools opened to serve students in those grades. Some weekend schools also serve high school and preschool/kindergarten. Several Japanese weekend schools operate in facilities rented from other educational institutions. The majority of the instruction is kokugo (Japanese language instruction). The remainder of the curriculum consists of other academic subjects, including mathematics, social studies, and sciences. In order to cover all of the material mandated by the government of Japan in a timely fashion, each school assigns a portion of the curriculum as homework, because it is not possible to cover all material during class hours. , author of "Japanese Community Schools: New Pedagogy for a Changing Population", stated in 2011 that the supplementary schools were dominated by "a monoglossic ideology of protecting the Japanese language from English". The Japanese government sends full-time teachers to supplementary schools that offer lessons that are similar to those of nihonjin gakkō, and/or those which have student bodies