The school, affiliated with the Episcopal Church in Micronesia, serves students from pre-kindergarten through 12th grade.

St. John's School opened in September 1962 with five teachers to serve children in kindergarten through fourth grade age groups.

In November 1962, Super Typhoon Karen destroyed the Quonset huts, which were replaced with tents by the Marines.

New tents were put up by the Marines and instructional kits given by the Red Cross helped the school get going again.

[1] In the mid-1950s a group of stateside civil workers primarily for Anderson Air Force Base submitted a petition to Bishop Kennedy in Honolulu requesting for an Episcopal mission here.

The large one served as the Church while the two smaller ones housed the Sunday School and the custodian, Mr. York.

The planners, who also composed the first board of the school included Gordon and Eleanor Mailloux, jewelers; Pat Ehrhart; Dottie Benson; Bob Hartin (Guam Ship Repair executive); and Frank Edwards, a businessman, who oversaw the modifying of the Quonsets to make them suitable for classrooms.

Having a background in education as well as a master's degree in Music, he also taught band and chorus on the secondary level.

The new tents were put up by the Marines and instructional kits given by the Red Cross helped the school get going again.

Bishop Kennedy gave him the Distinguished Service Cross for his great contribution to the church on Guam.

[4] The Knights field teams in seven sports: basketball, cross country, golf, rugby, soccer, tennis, and volleyball.