The International School of Boston (ISB) opens a world of possibilities for students from preschool through Grade 12.
ISB provides a rigorous multilingual education, inclusive cultural experiences, and a fearless global mindset needed to learn and lead, both today and in the future.
Quick Facts (2025-26)
- Top Ranked MA School
- School Type: School with Special Program Emphasis
- Grades: Nursery/Preschool-12
- Enrollment: 540 students
- Yearly Tuition: $48,820
- Average class size: 14 students
- Application Deadline: Jan. 15 / rolling
- Source: Verified school update
Top Rankings
International School Of Boston ranks among the top 20% of private schools in Massachusetts for:
School Overview
School Type
Religious Affiliation
Grades Offered
Grades Nursery/Preschool-12
Year Founded
1962
Summer School Offered
Yes
Summer Program Details
School Calendar
Last Day of School
Wed. Jun 10, 2026
Student Body
Total Students
540 students
Student Body Type
Co-ed
% Students of Color
12%
State avg.: 30%
Students by Grade
Academics and Faculty
Total Classroom Teachers
93 teachers
Student-Teacher Ratio
6:1
National avg.: 13:1
% Faculty w/Advanced Degree
80%
Average Class Size
14 students
List of Courses Offered
Matriculation DataMatric. Data
Classroom Dress Code
Casual
Tuition and Acceptance Rate
Admission Deadline
Jan. 15 / rolling
Yearly Tuition Cost
$48,820
Tuition Notes
Tuition between $28,100 and $48,820
% on Financial Aid
23%
Admissions Director
Alex Patturelli
Admissions Associate
Elisabeth Geffray
Application URL
Sports
Total Sports Offered
4 sports
Extracurriculars
Total ExtracurricularsTotal Extra-curric.
56 extracurriculars
ExtracurricularsExtra-curric.
Club or Organization:
ArabicArchery
ArtAstronomy
BadmintonBallet
BasketballBioBuilder
BotanyChess
Chorus and Select SingersClub Philo
CodingComputer Science
CookingDance
Digital ArtDiscover of Music
EcoEntrepreneurship
FarsiFashion Illustration
FencingFilm
FinanceGirls Who Code
ISB RadioJazz / Rock Band
KarateLegos
Life ArtMandarin
Marine BiologyMath
Math GamesMath Olympiad
MeteorologyModel United Nations Team
Movie MakingPrivate Music Instruction
SailingSoccer
Social ActionSpanish Conversation & Games
STEMStorytelling and Creative Writing
Student AmbassadorsStudent Council
SwimmingTennis
Theater CompanyUltimate Frisbee
WatercolorsWeird Science
Yearbook ClubYoga
School Notes
- School Mascot: Volt The Blue Terrier
- The International School of Boston (ISB) opens a world of possibilities for students from preschool through Grade 12. ISB provides a rigorous multilingual education, inclusive cultural experiences, and a fearless global mindset needed to learn and lead, both today and in the future.
- At ISB, students are immersed in a dynamic learning environment. Classes are taught in English and French, equipping students with not only the ability to fluently speak at least two languages, but also empowering them to think in at least two languages. Their minds will be forever opened to the diverse ideas, insights, and innovations of peoples, countries, and societies that they will discover at ISB and beyond.
- The ISB priority application deadline is January 15. There is no fee to apply, and need-based financial aid is available. No prior knowledge of French, Chinese, or Spanish is required for admission.
Source: Verified school update
Frequently Asked Questions
How much does International School Of Boston cost?
International School Of Boston's tuition is approximately $48,820 for private students.
Does International School Of Boston offer a summer program?
Yes, International School Of Boston offers a summer program. Visit their summer school page for more information.
What sports does International School Of Boston offer?
International School Of Boston offers 4 interscholastic sports: Basketball, Fencing, Soccer and Volleyball.
What is International School Of Boston's ranking?
International School Of Boston ranks among the top 20% of private schools in Massachusetts for: Largest student body and Most extracurriculars offered.
When is the application deadline for International School Of Boston?
The application deadline for International School Of Boston is Jan. 15 / rolling (applications are due on Jan. 15 but additional applications are reviewed year-round as space permits ).
Related Schools
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People that viewed International School Of Boston also viewed these schools: Buckingham Browne & Nichols School, Shady Hill School, Cambridge Friends School, Fayerweather Street School and German International School Boston.
The nearest high school to International School Of Boston is The Cambridge Matignon School (0.1 miles away)
The nearest elementary school is Lesley Ellis School (0.6 miles away)
The nearest preschool is Tufts Educational Daycare Center (0.4 miles away)
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School
Location
Miles
Quick Facts
80 Gerry's Landing Rd
Cambridge, MA 02138
(617) 547-6100
Cambridge, MA 02138
(617) 547-6100
2.1 miles
Gr: PK-12 | 1,043 student Avg. class size: 15 students Sports: 19 | Extracurrculars: 68 Tuition listed
178 Coolidge Hill
Cambridge, MA 02138
(617) 520-5260
Cambridge, MA 02138
(617) 520-5260
2.1 miles
Gr: PK-8 | 530 students Avg. class size: 16 students Sports: 12 Tuition & acceptance rate listed
5 Cadbury Road
Cambridge, MA 02140
(617) 354-3880
Cambridge, MA 02140
(617) 354-3880
1 miles
Gr: PK-8 | 140 students Avg. class size: 11 students Sports: 2 | Extracurrculars: 8 Tuition & acceptance rate listed
765 Concord Avenue
Cambridge, MA 02138
(617) 876-4746
Cambridge, MA 02138
(617) 876-4746
1.3 miles
Gr: PK-8 | 205 students Avg. class size: 20 students Sports: 3 | Extracurrculars: 12 Tuition & acceptance rate listed
57 Holton Street
Allston, MA 02134
(617) 783-2600
Allston, MA 02134
(617) 783-2600
2.9 miles
Gr: PK-12 | 263 students Avg. class size: 14 students Sports: 8 | Extracurrculars: 7 Tuition & acceptance rate listed
School Reviews
5 1/19/2022
Parent of a twelfth grader. We're getting nostalgic already but are so excited for our son who has just been admitted ED to Columbia. Amazingly diverse student body and faculty. Small classes but with a lot of individualized focus on students. Emphasis on student independence which we know will benefit him in NYC next year. I've heard admissions is getting increasingly competitive. We're thankful our son could get it when he did so many years ago!
5 10/9/2020
We've been with ISB for several years now and my daughter is so happy with the program and with her friends. Teachers are amazing, dedicated, well-educated and really care about their students. Love the emphasis on building empathy and valuing the diversity of perspective. She is in middle school now and we plan to stay for the IB program in the upper school.
5 2/28/2020
We've been with ISB for several years now. One child in middle school, the other in upper school. We were previously happy with the school but are even happier now with the recent change in leadership. Our children have thrived at ISB. They come from an English-speaking home, so the opportunity to connect them with another language and with a more globally focused curriculum and internationally diverse student community has been amazing.
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