OUR SCHOOL The International School of San Francisco is a PK-12 independent school in San Francisco.  Founded in 1962, the school is a multicultural, multilingual educational institution with over 1,100 students across an urban campus in the heart of the city. Guided by the principles of academic rigor and diversity, the International School of San Francisco offers programs of study in French and English to prepare its graduates for a world in which the ability to think critically and to communicate across cultures is of paramount importance. MISSION Guided by the principles of academic rigor and diversity, The International School of San Francisco offers programs of study in French and English to prepare its graduates for a world in which the ability to think