Learning
Students are encouraged to act on their learning so they might positively impact their own lives and the lives of others.
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Living
Within our international multi-faith community lies our greatest strength, but also our greatest challenge as to how we let every voice feel heard and included.
Loving
While academic achievement is central to life at Seisen, we also emphasize student leadership, spirituality and service.
A Catholic Kindergarten to Grade 12 IB international school in Tokyo
Preparing global leaders, critical thinkers and compassionate women for tomorrow.
Our Stories
Learning to Love, Loving to Learn since 1962
Lim Family
Iwase Family
Mary Chu, 1980s (SFSA President)
Lim Family
Being part of the Seisen Family means being open to all nationalities, ethnicities, and backgrounds.
With faculty and students from around the globe, Seisen helps shape our girls' understanding and perception of the world. The opportunity to attend Seisen allows them to experience things they wouldn't otherwise have, and that's something we are grateful for. It has taught my daughters to conserve water, not waste things unnecessarily, and be good global stewards of our environment. In Seisen, we have become part of a wonderful supportive community that prepares our daughters for a bright future.
The choice to send our girls to Seisen has been the best one we could have made and we are confident they will be prepared for whatever lies ahead in their future.
Iwase Family
What being a Seisen Family means to us!
Seisen isn't just about our children's education, it's about immersing them in a warm, welcoming, and diverse global family. Being part of this Seisen Family means becoming a valued member of this vibrant community. Students’ families and the school partner to co-create a nurturing learning environment for our children. There's constant open dialogue, where everyone's voice is heard and valued, regardless of background. It's not a one-sided relationship – it's casual, friendly, and even fun with a good sense of humor!
We feel integral to the school's journey to see our children become compassionate global citizens in this multicultural world.
Mary Chu, Seisen Former Students's Association President
“Every memory of Seisen is wonderful which includes the Sisters, my friends, teachers, staff, classes, participating in extracurricular activities, and being involved at school. What they all have in common is that as a child and student, I knew that I belonged at Seisen. As students, we always accepted each other even for our differences in culture, religion, and opinions. We didn’t judge and were never judged. I’m grateful to my parents for choosing Seisen for me since Seisen is a big part of who I am today."
Facts & Figures
The Seisen Story
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The Seisen Experience
Programs & Features
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Ethos
Spiritual Life
The Seisen Story in International Education is a story grounded in an educational philosophy of love and service as nurtured by the Handmaids of the Sacred Heart of Jesus
Arts
Fine and Performing Arts
Students are able to use their creativity and explore many forms of art.
Athletics
Athletics
Team membership provides experiences that help students grow and develop both in the athletic environment and the classroom.
Innovation
Women in Science and Technology
Passionate and motivated students pursue science to a higher level in an international environment.
Community
Home-School Partnership
Parents organize a variety of activities for further strengthening Seisen community.
Leadership
Staff Who Care
A professional, international staff of 99 teachers from 23 countries provide a safe and challenging CIS/NEASC accredited education for our students.
News & Events
The latest school updates
![Seisen composer aims to help others feel the thrill of music]([{"url":"https://resources.finalsite.net/images/f_auto,q_auto,t_image_size_1/v1743469677/seisencom/dfarvc4fo8w0a1ajo7j6/unnamed_2.jpg","width":256},{"url":"https://resources.finalsite.net/images/f_auto,q_auto,t_image_size_2/v1743469677/seisencom/dfarvc4fo8w0a1ajo7j6/unnamed_2.jpg","width":512},{"url":"https://resources.finalsite.net/images/f_auto,q_auto,t_image_size_3/v1743469677/seisencom/dfarvc4fo8w0a1ajo7j6/unnamed_2.jpg","width":800},{"url":"https://resources.finalsite.net/images/f_auto,q_auto,t_image_size_4/v1743469677/seisencom/dfarvc4fo8w0a1ajo7j6/unnamed_2.jpg","width":1200},{"url":"https://resources.finalsite.net/images/f_auto,q_auto/v1743469677/seisencom/dfarvc4fo8w0a1ajo7j6/unnamed_2.jpg","width":1600}])
(Hwi Young Kim - Class of 2025) "
![Varsity Basketball Returns to the Chiang Mai Championship]([{"url":"https://resources.finalsite.net/images/f_auto,q_auto,t_image_size_1/v1738298179/seisencom/fegstowqkma3dfskwjcv/20250124_145845.jpg","width":256},{"url":"https://resources.finalsite.net/images/f_auto,q_auto,t_image_size_2/v1738298179/seisencom/fegstowqkma3dfskwjcv/20250124_145845.jpg","width":512},{"url":"https://resources.finalsite.net/images/f_auto,q_auto,t_image_size_3/v1738298179/seisencom/fegstowqkma3dfskwjcv/20250124_145845.jpg","width":800},{"url":"https://resources.finalsite.net/images/f_auto,q_auto/v1738298179/seisencom/fegstowqkma3dfskwjcv/20250124_145845.jpg","width":1008}])
The team needed to win both of their final pool play games to make it into the semi-finals.
![wrestling team]([{"url":"https://resources.finalsite.net/images/f_auto,q_auto,t_image_size_1/v1736222042/seisencom/j7lus42dv98o9v3xdxvc/IMG_3062.jpg","width":256},{"url":"https://resources.finalsite.net/images/f_auto,q_auto,t_image_size_2/v1736222042/seisencom/j7lus42dv98o9v3xdxvc/IMG_3062.jpg","width":512},{"url":"https://resources.finalsite.net/images/f_auto,q_auto,t_image_size_3/v1736222042/seisencom/j7lus42dv98o9v3xdxvc/IMG_3062.jpg","width":800},{"url":"https://resources.finalsite.net/images/f_auto,q_auto,t_image_size_4/v1736222042/seisencom/j7lus42dv98o9v3xdxvc/IMG_3062.jpg","width":1200},{"url":"https://resources.finalsite.net/images/f_auto,q_auto/v1736222042/seisencom/j7lus42dv98o9v3xdxvc/IMG_3062.jpg","width":1344}])
The Seisen Wrestling Team started their Winter break with a competition in Okinawa.
![Participation in school drama productions leads to summer acting classes]([{"url":"https://resources.finalsite.net/images/f_auto,q_auto,t_image_size_1/v1732671670/seisencom/srfmvhxdhrzt27trhv2o/unnamed-1_2.png","width":256},{"url":"https://resources.finalsite.net/images/f_auto,q_auto,t_image_size_2/v1732671670/seisencom/srfmvhxdhrzt27trhv2o/unnamed-1_2.png","width":512},{"url":"https://resources.finalsite.net/images/f_auto,q_auto,t_image_size_3/v1732671670/seisencom/srfmvhxdhrzt27trhv2o/unnamed-1_2.png","width":800},{"url":"https://resources.finalsite.net/images/f_auto,q_auto,t_image_size_4/v1732671670/seisencom/srfmvhxdhrzt27trhv2o/unnamed-1_2.png","width":1200},{"url":"https://resources.finalsite.net/images/f_auto,q_auto/v1732671670/seisencom/srfmvhxdhrzt27trhv2o/unnamed-1_2.png","width":1600}])
(Cassie Bucy - Class of 2025) "At SCAD I was able to meet people from all over who were just as passionate about acting as I was, and getting to work with each of them in different ways was an amazing experience and has helped me to become a better group member. "
![Bridging Smiles and Building Bonds: SIS Students' Transformative Service Trip to Vietnam Fall 2024]([{"url":"https://resources.finalsite.net/images/f_auto,q_auto,t_image_size_1/v1731386440/seisencom/dibppqw2ruvs8s61o9e8/IMG_2741.jpg","width":256},{"url":"https://resources.finalsite.net/images/f_auto,q_auto,t_image_size_2/v1731386440/seisencom/dibppqw2ruvs8s61o9e8/IMG_2741.jpg","width":512},{"url":"https://resources.finalsite.net/images/f_auto,q_auto,t_image_size_3/v1731386440/seisencom/dibppqw2ruvs8s61o9e8/IMG_2741.jpg","width":800},{"url":"https://resources.finalsite.net/images/f_auto,q_auto,t_image_size_4/v1731386440/seisencom/dibppqw2ruvs8s61o9e8/IMG_2741.jpg","width":1200},{"url":"https://resources.finalsite.net/images/f_auto,q_auto/v1731386440/seisencom/dibppqw2ruvs8s61o9e8/IMG_2741.jpg","width":1344}])
HS students on their service trip experience in Vietnam left a long-lasting impact through developing relations with children at Ai Linh Love School.
