Washington International School Photo - The Primary School outdoor play area includes a field used for a variety of activities.

Average Private High School ACT Scores in District Of Columbia

The averageprivate high school ACT score in District Of Columbia is 30 (2025-26).
The private high school in District Of Columbia with the highest ACT score is Washington International School and National Cathedral School, each with an ACT score of 31.
Act Score Range: 28 31 Avg. Act Score: 30

Average Private High School ACT Scores in District Of Columbia (2025-26)

School
ACT Score
Grades
Location
Rank: #1 - 21. - 2.
National Cathedral School
All-girls (Episcopal)
ACT Score: 31
Grades: 4-12
3612 Woodley Road NW
Washington, DC 20016
(202) 537-6300
Rank: #1 - 21. - 2.
Washington International School
Washington International School Photo - The Primary School outdoor play area includes a field used for a variety of activities.
Special Program Emphasis
ACT Score: 31
Grades: NS-12
3100 Macomb Street NW
Washington, DC 20008
(202) 243-1800
Rank: #33.
Maret School
Maret School Photo - Upper School students gather in the Theatre weekly for Convocation, a meeting run by Student Council.
(1)
ACT Score: 30
Grades: K-12
3000 Cathedral Avenue NW
Washington, DC 20008
(202) 939-8814
Rank: #44.
Gonzaga College High School
Gonzaga College High School Photo - Gonzaga is Washington's only Catholic, Jesuit high school. The campus is located in the heart of our nation's capital and consists of nine buildings. In recent years, the physical plant has undergone major renovations and additions.
All-boys (Catholic)
(4)
ACT Score: 28
Grades: 9-12
19 I Street NW
Washington, DC 20001
(202) 336-7100

Frequently Asked Questions

What is the District Of Columbia average private high schools ACT score?
The District Of Columbia average private high schools ACT score is 30 for 2025-26.
What are the private high schools with the highest ACT score in District Of Columbia?
The top ranked private schools in District Of Columbia include National Cathedral School, Washington International School and Maret School.

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