. The school, operated by the
Japanese Ministry of Education, was established with the financial involvement of Japanese companies. It first opened as a supplementary school, with four teachers and 20 students, in the Convent of Our Lady Sion in September 1965. It was upgraded to an official supplementary school in 1974 when the Japanese Ministry of Education sent its first teacher; it had done so due to an increase in the student body. The day school was established on 18 June 1976. The Japanese Ministry of Education had sent , the first headmaster, to London the previous April. In October 1976 the school had 79 students, with 54 in primary school and 25 in junior high school. That month it moved to several buildings on the property of the Japan Club and the Japan Embassy Information Service Centre. In April 1977 the school moved to a new location, In April 1987, At the time of the move, the Japanese community had a position of relative expansion. In 1988 the company Wilmott Dixon Western did a renovation on the school facility, adding two rooms for science classes and seven other classrooms, with work scheduled to be done by May 1989. The cost was £725,000. In 1991 the school had 980 students. In 1999 the Saturday school had 1,602 students and 82 teachers at three sites, making made it the largest of the eight Japanese Saturday schools in the United Kingdom. At the time the Saturday school had three sites: Acton,
Camden, and
Croydon. It was a site of filming for the 2009 film
An Education. ==Academic standards==