International School Of Boston (Top Ranked Private School for 2026-27)

Name: Tour
Start: 2026-09-14T08:30:00-04:00
End: 2027-06-04T00:30:00-04:00
Location: International School Of Boston

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Quick Facts (2026-27)

Top Ranked MA School
School Type: Special Program Emphasis
Grades: Nursery/Preschool-12
Enrollment: 540 students
Yearly Tuition: $51,260
Average class size: 14 students
Application Deadline: Jan. 15 / rolling
Source: ✓Verified school update

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School Rankings

International School Of Boston ranks among the top 20% of private schools in Massachusetts for:

School Facts

School Type

School with Special Program Emphasis

School Membership(s)School Assoc.

National Association of Independent Schools (NAIS)
New England Association of Schools and Colleges
Association of Independent Schools in New England (AISNE)
International Baccalaureate (IB) World School

Religious Affiliation

Nonsectarian

Grades Offered

Grades Nursery/Preschool-12

Students By Grade

View Data

Distribution of Students By Grade
Grade	International School Of Boston
Nursery	10
Pre-K	53
Kind	29
1	37
2	33
3	42
4	38
5	60
6	46
7	53
8	32
9	26
10	23
11	24
12	34

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Year Founded

1962

Summer School Offered

Yes

Summer Program Details

View Summer Program Details

School Calendar

View School Calendar

Last Day of School

Wed. Jun 16, 2027

Student Body

Total Students

540 students

Student Body Type

Co-ed

% Students of Color

12%

State avg.: 31%

Academics & Faculty

Total Classroom Teachers

93 teachers

Student-Teacher Ratio

6:1

National avg.: 11:1

% Faculty w/Advanced Degree

80%

Average Class Size

14 students

List of Courses Offered

Link to List of Courses

Matriculation DataMatric. Data

View Matriculation Data

Classroom Dress Code

Casual

Tuition & Acceptance Rate

Admission Deadline

Jan. 15 / rolling

Yearly Tuition Cost

$51,260

View national tuition avg.

Tuition Notes

Tuition between $29,500 and $51,260

% on Financial Aid

23%

Admissions Director

Alex Patturelli

Admissions Associate

Elisabeth Geffray

Application URL

Online Application

Sports

Total Sports Offered

4 sports

Sports

BasketballFencing

SoccerVolleyball

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

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School Notes

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.

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

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Frequently Asked Questions

How much does International School Of Boston cost?

International School Of Boston's tuition is approximately $51,260 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 ).

School Reviews

5.00 out of 5 (3 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!

- Posted by Parent - Marie C

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.

- Posted by Parent - ISB Parent

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.

- Posted by Parent - Happy with ISB

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Did You Know?

The average private school tuition in Cambridge, MA is $30,545 for elementary schools (read more about average private school tuition across the country).

The average acceptance rate in Cambridge, MA is 43% (read more about average acceptance rates across the country).