International School of Boston

The International School of Boston (ISB) is a private day school in Cambridge serving students from age 2 through Grade 12. It offers French-English bilingual and multilingual education and the International Baccalaureate program, with the goal of preparing students to learn, connect and work across languages and cultures. The school aims for friendships that span continents and conversations that move naturally across languages, and it emphasizes empathy and global perspective alongside academics.

Upper school students follow either a French track preparing for the French baccalaureate or the IB Diploma Programme, and alumni credit both with preparing them well for college. Faculty have lived and taught in countries including France, Belgium, Switzerland and Singapore. Student initiative is encouraged: a group of seniors recently launched a Cambridge chapter of Novasta, a student-run food rescue nonprofit, and delivered 1,860 meals to local shelters in a single week.

What to Know

• There is no fee to apply to ISB.
• Need-based financial aid is available.
• Families can join a mailing list and schedule a campus visit before applying.
• The school is a nonprofit educational organization.
• A program known as BFI supports students developing bilingual skills in French and English.