Welcome
Welcome to the Seisen International School Website.
SIS is an all-girls’, grades 1-12 Catholic school, with co-ed Montessori Kindergarten, located in Tokyo, Japan. Students and faculty from over 60 countries are represented at SIS, with English being the main language of instruction.
Contact information:
Name: Seisen International School
Address: 12-15 Yoga 1-chome, Setagaya-ku, Tokyo 158-0097
Telephone #: 03-3704-2661
Fax. #: 03-3701-1033
Thank you for visiting the Seisen website.
Please send any comments, suggestions, or questions to: sisinfo@seisen.com