Learning to Love, Loving to Learn

We are


Share your Phoenix Pride

Seisen International School Students are


Learn about 

Leadership at Seisen

Serving the Tokyo Expatriate Community

Since 1962

Learn about our tradition of education.

Seisen International School Students Are

Globally Minded

Learning to Love, and Loving to Learn

Through Collaboration and Community


The only Kindergarten in Setagaya accredited by:

Japan Council of International Schools

Why is JCIS accreditation important?

Seisen International School students are


Seisen is a Catholic school that encourages students to develop their own beliefs

Learn more

Seisen Students Are



Learn More about IB-PYP at Seisen

Seisen International School students are



As I was cycling around my neighborhood yesterday, I noticed two of the sakura trees had bloomed.  So of course I stopped, got off my bike, and snapped a picture.  And it was a great reminder of how even when the world feels like it is in chaos, we can still count on nature to reassure us

There is a famous line in Francis Ford Coppolla's, 1972 Academy Award winning film "The Godfather", that says, "We go the mattresses".  This line was made famous again in Nora Ephron's 1998 romantic comedy, "You've Got Mail".  Essentially, "go to the mattresses" is an expression that means to prepare for battle.

Jiggle Friday is the practice of pausing in daily life to reflect on goodness and what invites gratitude. 

How many of you exist in an echo chamber?  How many of you are able to listen to a different, even dissenting perspective, without becoming defensive or taking it as a personal attack? What can you do to become more open-minded?

Practicing wellness is an integral part of staying healthy, so I wanted to offer some tips for both students and adults during this time.

In times of uncertainty, it is most important to be aware of gossip and how information is being communicated.  We have seen an incredible amount of disinformation regarding the Coronavirus outbreak being circulated around the internet. 

A Catholic K-12 IB international school in Tokyo,

preparing global leaders; critical thinkers and compassionate women for tomorrow.

Seisen Weather Forecast