International School of Asia, Karuizawa (ISAK) is Japan’s only fully residential, 3-year international high school. Our students are curious, bright, and passionate about taking action in the service of others. Our challenging International Baccalaureate (IB) Diploma Programme curriculum, combined with our unique leadership, mindfulness and design innovation programs, makes ISAK an exceptional place to live and learn. If you are looking for a world-class education that teaches so much more than how to pass an exam, take a look at ISAK!

In addition to being an Official IB World School, ISAK is accredited by Japan’s Ministry of Education (MEXT), which means that all graduates receive a Japanese high school diploma.

Through our robust scholarship and financial assistance programs, ISAK is able to be truly diverse, bringing together students from around the world from a wide variety of cultures and socio-economic backgrounds. We are currently working toward becoming a UWC school.