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

Still accepting applications for preschool through high school for 2020-2021

Alto’s Guidelines to Reopening our Campus

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

Better Together: One School – A Million Opportunities

Alto and Silicon Valley International School announce partnership for full merger in July 2021.

Congratulations, Class of 2020!

The members of the Class of 2020 are the first students to graduate from Alto International Schools’ high school program founded in 2016. They are also the first Alto students to receive the IB Diploma.

Meet Us Online

While our campus is physically closed and our students and teachers are working online, we are offering online meetings to prospective families instead of school tours.

Reflection on Challenging Times

Alto teachers and staff reflect on our current challenging times and the need to fight racism, discrimination, and social injustice.

Our Preschool is Open

We are excited to welcome back some of our youngest students!⁣ After careful preparations, Alto’s preschool is now providing an on-campus program for the remaining two weeks of the school year.

Advantages of the IB

New research shows that International Baccalaureate Diploma Programme students are outperforming high school students nationally in university enrollment, persistence, and graduation.