[1] Japanische Ergänzungsschule in Düsseldorf (デュッセルドルフ日本語補習校 Dyusserudorufu Nihongo Hoshūkō), a Japanese weekend school, is a part of the institution.

[3] In 1972 classes for grades 1-4 opened at the Don Bosco School in Oberkassel, with 90 students.

Due to overcrowding, the junior high school moved to a satellite building in 1983.

[5] As of 1985, as there were not yet any Japanese curriculum high schools in Europe, graduates typically went back to Japan to attend high school as they were not equipped enough in German to enter German upper secondary education systems.

Fukushima, an official of the school quoted in an Associated Press article, stated in 1985 that he wanted to organize inter-cultural activities such as stage plays and picnics and to increase instruction time of German classes to increase interaction between Japanese and Germans in the area.