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.
Quick Stats (2025)
- Top Ranked DC School
- School Type: School with Special Program Emphasis
- Grades: Nursery/Preschool-12
- Enrollment: 890 students
- Yearly Tuition: $51,710
- Acceptance rate: 15%
- Average class size: 14 students
- Application Deadline: Jan. 5
- Source: Verified school update
Top Rankings
Washington International School ranks among the top 20% of private schools in District Of Columbia for:
School Overview
School Type
Religious Affiliation
Grades Offered
Grades Nursery/Preschool-12
Dual Language Immersion Program
Secondary Immersion Language
Other
Year Founded
1966
First Day of School
Fri. Aug 15, 2025
Last Day of School
Mon. May 25, 2026
Student Body
Total Students
890 students
Student Body Type
Co-ed
Students by Grade
Academics and Faculty
Total Classroom Teachers
106 teachers
Student : Teacher Ratio
8:1
National avg.: 13:1
% Faculty w/Advanced Degree
72%
Average Class Size
14 students
List of Courses Offered
Average SAT score
1380
(Out of 1600)
Average ACT score
31
(Out of 36)
Matriculation DataMatric. Data
Classroom Dress Code
Casual
Tuition and Acceptance Rate
Admission Deadline
Jan. 5
Yearly Tuition Cost
$51,710
Tuition Notes
Preschool Tuition: $32,190
Pre-Kindergarten Tuition: $40,980
Kindergarten Tuition: $44,495
Grade 1 to Grade 5 Tuition: $45,730
Middle School Tuition (Grades 6-8): $50,970
Upper School Tuition (Grades 9-12): $51,710
% on Financial Aid
16%
Average Financial Aid Grant
$34,739
Acceptance Rate
15%
National avg.: 81%
Admissions Director
Mary Hastings Moore
Application URL
Endowment Size
$10.4 million
Sports
Total Sports Offered
7 sports
Sports
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
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
- School Mascot: Red Devils
Source: Verified school update
Frequently Asked Questions
How much does Washington International School cost?
Washington International School's tuition is approximately $51,710 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 15%, which is lower than the national average of 47%. Washington International School's acceptance rate is ranked among the top private schools in District Of Columbia with low acceptance rates.
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: Lowest average acceptance rates and 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 56 other private schools located in Northwest Washington.
School Calendar
View the Washington International School yearly calendar below. Note key dates such as:
Event
Date
Last Day for Students | HALF DAY
June 11, 2025 (Wednesday)
Last Day for Teachers
June 13, 2025 (Friday)
Related Schools
Show me:
Popular comparisons: Washington International School vs. Georgetown Day School
People that viewed Washington International School also viewed these schools: Georgetown Day School, Sidwell Friends School, Maret School, Lowell School and British International School of Washington.
The nearest high school and elementary school to Washington International School is Maret School (0.3 miles away)
The nearest preschool is Beauvoir The National Cathedral Continuation School (0.4 miles away)
Show me:
Show me:
School
Location
Miles
Grades
Students
Grades: PK-12 | 1,050 students 1.7 miles 4200 Davenport Street, NW
Washington, DC 20016
(202) 274-3200
Washington, DC 20016
(202) 274-3200
1.7
PK-12
1,050
Sidwell Friends School
(Friends)
Grades: PK-12 | 1,142 students 0.8 miles 3825 Wisconsin Ave NW
Washington, DC 20016
(202) 537-8100
Washington, DC 20016
(202) 537-8100
0.8
PK-12
1,142
Grades: K-12 | 659 students 0.3 miles 3000 Cathedral Avenue NW
Washington, DC 20008
(202) 939-8814
Washington, DC 20008
(202) 939-8814
0.3
K-12
659
Grades: PK-8 | 313 students 3.8 miles 1640 Kalmia Road NW
Washington, DC 20012
(202) 577-2000
Washington, DC 20012
(202) 577-2000
3.8
PK-8
313
Grades: PK-12 | 616 students 1.2 miles 2001 Wisconsin Avenue NW
Washington, DC 20007
(202) 280-6780
Washington, DC 20007
(202) 280-6780
1.2
PK-12
616
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