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Welcome to St. Mary’s
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.
St. Mary's is an all boys' school, and our programs are specifically designed to meet the educational and developmental needs of boys. We offer a private, college-preparatory program and provide a sound liberal arts education that enables our students to enter and succeed in the best colleges and universities around the world. St. Mary's fosters an atmosphere which allows students to fully express themselves through a wide range of academic and artistic activities.