The only Bay Area school offering the IB program from preschool through high school.

The International Baccalaureate (IB) opens the door to a world of possibilities

Now accepting applications for preschool to high school for fall 2020-2021

Alto offers a German language immersion program in preschool and elementary school

Alto International School believes in the importance of a globally-minded, progressive education.

Alto is an International Baccalaureate World School in the heart of Silicon Valley and is the only school in the Bay Area offering the International Baccalaureate from preschool through high school. Every day we create a stimulating learning environment for our students who come from all over the world. Students of all ages are exposed to an international mindset and an inquiry-based learning approach.

Our internationally focused middle and high school offers students a unique preparatory, multilingual education providing them with the necessary skills for university and life beyond. Students are taught in a multilingual environment, graduating with literacy skills in at least two languages. For younger students we offer a German-immersion focused preschool and elementary program, educating engaged, independent, and balanced learners.

At Alto, we believe that the world needs young people eager to take on today’s and tomorrow’s challenges. Alto International School equips students with the skills and confidence to contribute to making our world a better place.

English Track | German Track | The IB Advantage


From the Alto Blog:

Alto News

A Lesson on Climate Change

Alto students are making their voices heard about the need to address climate change. The topic is also explored in the classroom, for example, in an integrated science and IAS unit for middle schoolers.

Winterfest 2019

December 7, 2:00 – 5:00 pm: Join us for an afternoon of holiday cheer, student performances, cakes & cookies, bratwurst, and much more. Plus, find unique gifts at our holiday market.

Alto Joins Round Square

Alto is now a member of Round Square, an internationally diverse network of 200 like-minded schools in 50 countries on six continents that connect and collaborate to offer world-class programs and experiences.

Common Ground: Under Pressure – Confronting Stress and Anxiety in Girls

December 10, 9:30 am & 7:00 pm: Lisa Damour, Ph.D., a New York Times columnist and a regular contributor to CBS News talks about her book “Pressure: Confronting the Epidemic of Stress and Anxiety in Girls”

Weekly Tours

We offer weekly tours for prospective parents. Interested families have the possibility to visit classrooms and learn about Alto’s inquiry-based, globally-minded program.

Meet Alto’s Team

Alto staff represents 15 different countries, including Germany, the United States, Switzerland, Russia, Cameroon, Britain, Turkey, and many more. Many of our teachers have taught all over the world before joining Alto.