Washington, DC · K–12
Last verified August 20, 2026
3100 Macomb St. Nw, 20008 · (202) 495-7357
Enrollment
847
Student:teacher
9:1
Published tuition
$34,315–$56,820
Application fee
—
Auto-sourced profile. These details were collected from the school's own website and may be out of date — always confirm tuition with the admissions office. Something wrong? Suggest a fix.
Tuition by division
We don't have a grade-by-grade tuition breakdown for this school yet. The published range across all divisions is $34,315–$56,820. Most independent schools charge different rates for preschool, elementary, middle and upper school.
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Head of school
We haven't confirmed who leads Washington International School yet. Heads of school change often, so we only list a name once we've seen it on the school's own site.
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Curriculum & special classes
The academic program is internationally-focused and incorporates pedagogy developed by the International Baccalaureate (IB PYP & IBDP) and Harvard University's Project Zero. All students in Grades 11 and 12 follow the International Baccalaureate (IB) curriculum, a highly demanding honors program.
Financial aid
Grants based on financial need are awarded to children whose families cannot otherwise afford tuition and fees. On average 14 to 15 percent of the current students receive some amount of financial aid.
Before & after school care
Before school
PRIMARY SCHOOL: Early Arrival starting at 7:00 AM (additional fee); Before-School Care starting at 8:00 AM (no fee).
After school
PRIMARY SCHOOL: After School Classes/Extended Day until 6:00 PM (additional fee). MIDDLE SCHOOL: Extended Day until 6:00 PM (additional fee); Team Sports and Clubs (no fee). UPPER SCHOOL: Team Sports and Clubs (no fee).
Cost
Primary School Early Arrival and After School Classes/Extended Day have an additional fee. Middle School Extended Day has an additional fee.
Extended-care hours and rates change yearly — parents can correct these below.
Admissions
The admissions process varies depending on the grade to which a child is applying. The first step suggested is completing an inquiry form, followed by exploring specific dates and documents.
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Acceptance rate
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Application fee
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