[5] The Guam Japanese Association began considering making one in March 1972 and it opened by May 1973.

It occupied the conference room of the Japan Airlines office at Guam Airport, then St. John's School beginning in September 1975, then to the Fujita Hotel beginning in September 1979, then six classrooms in Tamuning Elementary School beginning in July 1987.

[6] Around the years 1987-1989 there was a committee held to establish a Japanese day school in Guam, with the decision to formally create a Japanese school being made in April 1988.

Originally its campus was the Pacific Islands Club (PIC) Hotel in Tamuning, near Hagåtña (Agana), which now housed both day and weekend schools.

[6][11] A kindergarten division was created in 2002, with 2 students enrolling that year.