Fast Facts


Okinawa Christian School International was established in 1957 to provide Christ-centered education for the children of evangelical missionaries. OCSI currently serves over 300 families who desire this type of education for their children, and we have over 400 students in our (preK-12) day school program.

Our classes (except foreign language) are taught in English, and we use an American-style program that addresses the whole person, is Biblically based, recognizes all truth is God’s truth, emphasizes sharing the Gospel and discipleship, and encourages Biblical thinking and living:

  • Elementary program—Bible, core academics, and specialist instruction in art, computer applications, Japanese language, music, physical education, and library skills.
  • Middle school program—Bible, core academics, and exploratories in art, computer applications, Japanese language, music, and woodshop.
  • High school program—Bible, core academics, electives (art, computer applications, music, woodshop), honors courses (English, math), Advanced Placement courses (English, math), online courses from Sevenstar, and cocurricular program including sports and student government.

Academic Calendar

The academic year has 180 instructional days and is divided into two semesters (August – January, January – June). The middle school and high school uses a modified block schedule.


Western Association of Schools and Colleges (WASC) since 1981
Association of Christian Schools International (ACSI) since 1991

As a result of OCSI being accredited by an North American agency, graduates are qualified to apply for admissions to Japanese universities with English-based programs.


Mr. Michael Essenburg, superintendent
Mrs. Latasha Calvin, secondary principal
Mrs. Megan Roe, elementary principal
Mr. Jonathan Simburger, business manager

College and University Acceptances

During the past 5 years, graduates have been accepted into colleges and universities in the US, Japan, Australia, Canada, China, Germany, New Zealand, the Philippines, South Korea, United Arab Emirates, and the United Kingdom.

View the complete list


Expected Student Outcomes

Government Status

Gakko Hojin

Graduation Requirements

View the complete list of graduation requirements


Legacy class

Okinawa Christian School International was established in 1957 as a school for the children of missionaries living in Okinawa. During the first year, Mrs. Esther Austin taught a class of 11 children in an unused building at the Far East Broadcasting Network’s facility in Chatan.

The school eventually moved into a more permanent facility on present-day Camp Lester (then called Camp Kuwae) consisting of two Quonset huts. Missionary parents who started the school were aware that many other parents desired a Christian, English-language education at an affordable price. Believing that every child deserved an opportunity to receive an education taught from a Biblical perspective, the missionaries decided to open the doors of the school to any child, regardless of religious affiliation.

Legacy campus

Looking forward to the future, OCSI purchased land on Hacksaw Ridge in Urasoe City, a site of fierce fighting during the Battle of Okinawa in WWII. By 1965 students moved into a new, larger school facility (pictured at right). This expansion led to OCSI celebrating its first commencement when the graduating Class of 1969 received their diplomas.

By 1986, OCSI was looking to expand again. OCSI purchased the current campus in 1996 and began classes in this new facility during the 1996-1997 school year.


Our enrollment is as follows:

  • Pre-K to Kindergarten (K3 – K5): 44
  • Elementary (grades 1-5): 182
  • Middle school (grades 6-8): 91
  • High school (grades 9-12): 91


We have over 40 teachers (full and part-time) who come from the US, Canada, Japan, and the Philippines.


  • Grades K-2: DRA
  • Grades 3-8: MAP
  • Grades 9-12: PSAT, SAT, ACT, AP