Alto high school students outperform highest-ranked school systems in the world. Learn more about Alto’s international benchmarking and other achievements below.

International Benchmarking
Alto high school students outperform highest-ranked school systems in the world.

In 2018 Alto high school freshmen (grade 9)  and sophomore (grade 10) tested above the highest-ranked school systems in the world and scored in the top 10% worldwide. In fact, Alto students taking the International Schools’ Assessment (ISA) from grade 3 to grade 10 consistently outperform comparable schools worldwide.

What is ISA?

The International Schools’ Assessment (ISA) is designed specifically for students in international schools and includes assessment in mathematical literacy, reading and writing. Results from the assessment are comparable to existing PISA scales so schools can compare their performances to other countries and school systems around the world. Alto students participate in the ISA each year.

What is PISA?

PISA is an internationally endorsed exam taken by more than half a million 15-year-old students across the globe (representing approximately 28 million students in 72 countries). It is administered by the Organization for Economic Cooperation and Development (OECD).

German Language Awards
Alto German students excel in language competitions and exams.

Alto’s German Language & Literature class students regularly participate in language competitions and standardized testing showcasing their fluency in the German language.

AATG German Exam:
According to the 2017 Presidential Honor Roll of the American Association of Teachers of German (AATG), students at Alto International School received the most gold medals in the highest difficulty level (level 4) of any school in California and are ranked 5th place nationwide.

German Advanced Placement Tests:
Most students take the German Advanced Placement (AP) test in 8th or 9th grade and the majority of them receive a score of 5, the highest score possible.

Deutsches Sprachdiplom:
Alto students, who take German as a native language as well as those who take German language acquisition classes participate and successfully pass the Deutsches Sprachdiplom (DSD) exams throughout middle and high school, allowing them to apply to German universities after graduation. Alto International School is an accredited DSD school.

Parent Choice Awards
Alto is a six-time Bay Area Parent Magazine Parent Favorite.

Alto International School was awarded six Bay Area Parent Magazine Parent Choice Gold Medals for the Bay Area Peninsula region in 2017 and again in 2018. We are deeply honored to receive these awards.


Best International School 

Best Language Immersion School

Best Preschool

Best Elementary School

Best Middle School

Best High School

The IB is a first-rate program and it prepares students well for a university like ours.

Fred Hargadon, former Dean of Admissions, Princeton University