10th Anniversary Campaign

One life.
Realize your potential.
Be a catalyst for positive change.

Learn more about us and our unique mission

Our High School

As Japan’s first full-boarding international high school (grades 10-12), we are committed to educating intellectually curious, compassionate, and innovative students from around the world who are eager to make a difference.

About Us

UWC ISAK Japan opened its doors in 2014 as International School of Asia, Karuizawa (ISAK) before joining the UWC movement as its 17th member school in 2017. We are deeply committed to the pursuit of innovative models of education that will serve the next generation of leaders in a rapidly changing world.


At a Glance

Countries Represented
Faculty & Staff

Short Programs

All of our short programs aim to introduce students to UWC ISAK Japan’s unique approach to education, where we emphasize creative and critical thinking, leadership, and diversity. Join in summer, winter, or online to learn why participants call our short programs life-changing.

Summer School

For 13-14 Year olds

Winter School

For 12-13 Year olds


UWC ISAK Japan was built on generosity and is defined by gratitude. Find out how you can support us by contributing your time, your talent, or financially with your treasure.

School Blog

Find out about what’s going on at UWC ISAK

Inspiring stories from the
UWC ISAK Japan Community

Close this search box.

Imagine… if there was an ISAK lower school!

Dear Friends of UWC ISAK,

UWC ISAK is celebrating its 10th anniversary! We are proud of where we’ve come from, and we are excited about the next decade.

At this important milestone, we are wondering – in pursuit of broadening our impact, could an ISAK Lower School be considered as one of the options and would it be feasible? A school that embraces ISAK values and vision for a better future?

As we embark on this journey, if you would like to participate in possible market research and receive updates, please subscribe to our mailing list.