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

The best way to get to know Alto is to schedule a tour.

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

Meet Alto’s Team

Alto welcomed new teachers from all over the world this summer. Alto staff now represent 14 different countries, including Germany, the United States, Switzerland, Russia, Cameroon, Britain, Turkey, and many more.


Fall Open House

Join us for an all-school open house on Saturday, October 26, 2019. Learn about the IB program at Alto, visit classrooms, and meet students and teachers.


eWaste & Gadget Collection Event

September 21, 9:00 – 12:00 pm – Protect the environment and clean up your clutter. Alto will collect anything that plugs into the wall or takes a battery.


Meet Drew Alexander

Alto welcomes Drew Alexander as its new Head of School. Learn about the experienced educator with a passion for teaching and fostering global citizenship.


Parent Education: Navigating the Tides of Adolescence

Experienced clinicians will discuss research trends in adolescent health, academic stress, peer pressure and living a balanced life. The event is free for Alto families.


Fall Athletics

Volleyball and Cross Country practice has started. Check the Alto Calendar to see when our teams play. Go, Alto Dragons!