Welcome to St. Mary’s International School

Update: Facilities Maintenance

The Athletic Field and Tennis Courts will be closed for maintenance July 1–Aug. 6. They will not be available for use during that time.

2016-17 School Calendar

View the 2016-17 School Year Calendar here.

Welcome to St. Mary’s International School in Tokyo

St. Mary's International School has been providing quality education to the international community in the Tokyo area for over 50 years. Now in our second half-century, we have close to 1,000 boys from approximately 60 different countries. This international student body, rich in cultural and religious diversity, contributes greatly to the unique educational experience we offer. More ...