[2] Student demographics reflected the diversity of the Yokohama foreign community with a wide mix of nationalities represented.

By March 1937, the number of students had reached 102 compared to 52 in the previous year instructed by a teaching staff of twelve.

In the same year the Yokohama Country and Athletic Club agreed for the school to use its field on Wednesday afternoons for cricket and football.

The school continued to expand in both facilities and enrolment through the 1960s and 1970s, and initiated its first International Baccalaureate Diploma Programme (IBDP) from 1986.

The school caters primarily to the foreign community in Yokohama and the nearby Tokyo suburbs as well as Japanese students that have spent extended periods overseas.