Washington International School (Top Ranked Private School for 2026-27)

View full size Get directions

REQUEST INFO

SAVE SCHOOL

Quick Facts (26-27)

Top Ranked DC School
School Type: Special Program Emphasis
Grades: Nursery/Preschool-12
Enrollment: 903 students
Yearly Tuition: $34,315
Acceptance rate: 36%
Average class size: 15 students
Application Deadline: Jan. 5
Source: ✓Verified school update

School Rankings

Washington International School ranks among the top 20% of private schools in District Of Columbia for:

School Facts

School Type

School with Special Program Emphasis

Religious Affiliation

Nonsectarian

Grades Offered

Grades Nursery/Preschool-12

Students By Grade

View Data

Distribution of Students By Grade
Grade	Washington International School
Nursery	19
Pre-K	36
Kind	71
1	65
2	48
3	68
4	69
5	52
6	76
7	69
8	69
9	67
10	65
11	66
12	63

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full School Data: Full School Dataset XML | Full School Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

Dual Language Immersion Program

Yes

Secondary Immersion Language

Other

Year Founded

1966

Summer School Offered

Yes

Summer Program Details

View Summer Program Details

Student Body

Total Students

903 students

Student Body Type

Co-ed

% Students of Color

60%

State avg.: 50%

Academic Profile

Total Classroom Teachers

106 teachers

Student-Teacher Ratio

9:1

National avg.: 11:1

% Faculty w/Advanced Degree

70%

Average Class Size

15 students

Average SAT score

1340

(Out of 1600)

Average ACT score

(Out of 36)

Matriculation DataMatric. Data

View Matriculation Data

Classroom Dress Code

Casual

List of Courses Offered

Link to List of Courses

School Membership(s)School Assoc.

Educational Collaborative for International Schools (ECIS)
National Association of Independent Schools (NAIS)
Middle States Association Commissions on Elementary and Secondary Schools (MSA-CESS)
International Baccalaureate World School (IB)

Tuition & Financial Aid

Admission Deadline

Jan. 5

Yearly Tuition Cost

$34,315

View national tuition avg.

Tuition Notes

Preschool (Age 3) Tuition: $34,315 Pre-Kindergarten (Age 4) Tuition: $43,685 Kindergarten Tuition: $47,430 Grades 1–5 Tuition: $49,930 Middle School Tuition (Grades 6–8): $55,780 Upper School Tuition (Grades 9–12): $56,820

Summer Program Cost Notes

See Summer Camp website

% on Financial Aid

16%

Average Financial Aid Grant

$34,739

Acceptance Rate

36%

National avg.: 85%

Admissions Director

Mary Hastings Moore

Application URL

Online Application

Endowment Size

$10.4 million

Sports

Total Sports Offered

7 sports

Sports

BasketballCross Country

GolfSoccer

TennisTrack and Field

Volleyball

School Mascot

Red Devils

Extracurriculars

Total ExtracurricularsTotal Extra-curric.

4 extracurriculars

ExtracurricularsExtra-curric.

Club or Organization:

many student-organized clubs

Arts and Music Programs:

chorus and instrumental music.In middle and upper schools

two musicals and two plays each year

School Notes

Washington International School (WIS) is a coeducational day school offering 900 students a challenging international curriculum and rich language program from Preschool through Grade 12.
Students in Preschool through Grade 5 follow the International Baccalaureate (IB) Primary Years Program (PYP).
In Grades 6-10 students pursue a course of study designed to build skills in key areas while enhancing their ability to think deeply and solve problems.
In their final two years of high school, all students are enrolled in IB Diploma Program courses.
We equip children with the tools to master rigorous academic challenges in math, science, languages, literature, social sciences, and the arts.
An active sports schedule, programs in the arts, participation in clubs, community service in Washington, DC and around the world, and travel programs-for study and for fun-help create well-rounded students who are also engaged global citizens.

Source: Verified school update

REQUEST FREE INFORMATION

Frequently Asked Questions

How much does Washington International School cost?

Washington International School's tuition is approximately $34,315 for private students.

What schools are Washington International School often compared to?

Washington International School is often viewed alongside schools like Georgetown Day School by visitors of our site.

What is the acceptance rate of Washington International School?

The acceptance rate of Washington International School is 36%, which is lower than the national average of 63%.

Does Washington International School offer a summer program?

Yes, Washington International School offers a summer program. Visit their summer school page for more information.

What sports does Washington International School offer?

Washington International School offers 7 interscholastic sports: Basketball, Cross Country, Golf, Soccer, Tennis, Track and Field and Volleyball.

What is Washington International School's ranking?

Washington International School ranks among the top 20% of private schools in District Of Columbia for: Largest student body.

When is the application deadline for Washington International School?

The application deadline for Washington International School is Jan. 5.

In what neighborhood is Washington International School located?

Washington International School is located in the Northwest Washington neighborhood of Washington, DC. There are 55 other private schools located in Northwest Washington.

School Calendar

View the Washington International School yearly calendar below. Note key dates such as:

Event

Date

Spring Break

March 27, 2027 (Saturday)

Last Day of Classes (HALF DAY)

June 16, 2027 (Wednesday)

School Reviews

Endorse Washington International School. Endorsements should be a few sentences in length. Please include any comments on:

Quality of academic programs, teachers, and facilities
Availability of music, art, sports and other extracurricular activities
Academic or athletic awards

Recent Articles

September 22, 2026

Who Handles Medication at a Private School?

Learn who handles student medication at private schools, what policies families should review, and which questions parents should ask about prescriptions, emergencies, storage, documentation, and daily administration.

September 22, 2026

Does Your Child Need a School With a Full-Time Nurse?

Learn when a full-time school nurse matters, how private schools handle medications, chronic conditions and emergencies, and which health-service questions parents should ask before enrolling their child.

September 22, 2026

The Course Availability Test: Are Classes Really Offered?

Learn how to verify whether private school catalog courses are actually offered each year, identify scheduling limitations, and ask better questions before choosing a school for your child today.

Request Info

Email:

Name of parent:

Student first name:

Student last name:

Student date of birth:

Student is:

Male

Female

Currently in grade:

Seeking entry for grade:

Target start date:

Please briefly describe academic, athletic, and extracurricular interests of the student:

Home address:

City:

Country:

State:

Zip: (enter "N/A" if not applicable)

Phone:

Save this data and create your user profile. Create your own user account so you don't have to re-type your user data each time you request information. You'll also be able to track your information requests, get reminded of application dates, and more!

Username:

Password:

Did You Know?

The average private school tuition in Washington, DC is $28,750 for elementary schools and $34,668 for high schools (read more about average private school tuition across the country).

The average acceptance rate in Washington, DC is 63% (read more about average acceptance rates across the country).