Highest Average ACT Scores

The average ACT score across the 11 ranked all-boys boarding schools is 25 (2026-27).
Among all-boys boarding schools, the one with the highest average ACT score is Chaminade College Preparatory School, with 28.

Quick Facts (26-27)

  • # All-Boys Schools Ranked: 11
  • Top 20 Range (Average ACT Score): 20–29
  • All-Boys Schools Avg.: 25
  • National Avg.: 27

Quick Facts (26-27)

  • # All-Boys Schools Ranked: 11
  • Top 20 Range (Average ACT Score): 20–29
  • All-Boys Schools Avg.: 25
  • National Avg.: 27

National Average ACT Score (Trends)

Showing 2016–2025. Full 12-year historical data available below ↓

Total Growth: +4.2% (+1.1 since 2016)

Show school map — National (Average ACT Score (Out of 36) range: 20–29, avg 25)
Average ACT Score
(Out of 36) Range:
20
29 Avg. Average ACT Score
(Out of 36):
25

Highest Average ACT Scores (2026-27)

Among All-Boys Schools (out of 11 schools)

Sorted by range (alphabetically within range)
Chaminade College Preparatory School Photo - Chaminade is located 20 minutes outside of Downtown St. Louis in the lovely, safe, green neighborhood of Creve Coeur. Our 55 acre campus is fun and lively throughout the school year and a wonderful place not only to study and play but also to become part of the family.
Gr: 6-12
All-boys (Catholic)
425 South Lindbergh Blvd.
St. Louis, MO 63131
(314) 692-6645
Woodberry Forest School Photo
Gr: 9-12
All-boys (Non-denom. / Christian)
241 Woodberry Station
Woodberry Forest, VA 22989
(888) 798-9371
(2)
McCallie School Photo - The College Counseling office works with our students to help them find the best college fit and to ensure they are well prepared for the application and financial aid processes.
#3(T3–T5)McCallie School
Gr: 9-12, PG | 6-12, PG (day)
All-boys (Non-denom. / Christian)
500 Dodds Avenue
Chattanooga, TN 37404
(423) 624-8300
(3)
Mount Michael Benedictine School Photo
Gr: 9-12
All-boys (Catholic)
22520 Mount Michael Road
Elkhorn, NE 68022
(402) 238-1457
Subiaco Academy Photo - Named by Architecture Digest as one of "The World's Most Beautiful Boarding Schools," the modified Romanesque style architecture was rebuilt in 1959 using native sandstone taken from our own quarries about a mile northeast of the Abbey.
#3(T3–T5)Subiaco Academy
Gr: 7-12
All-boys (Catholic)
405 North Subiaco Avenue
Subiaco, AR 72865
(479) 934-1000
(4)
Christ School Photo
#6(T6–T8)Christ School
Gr: 8-12
All-boys (Episcopal)
500 Christ School Road
Asheville, NC 28704
(828) 684-6232
(1)
St. Lawrence Seminary High School Photo
Gr: 9-12
All-boys (Catholic)
301 Church Street
Mt. Calvary, WI 53057
(920) 753-7570
Saint Stanislaus High School Photo - We make the most of our location right on the Bay, developing unique programs, clubs, and activities for our students to enjoy. Our scuba and sailing clubs enjoy time in the water, while our environmental club focuses on care for our oceans, too.
Gr: 7-12
All-boys (Catholic)
304 S. Beach Blvd.
Bay St. Louis, MS 39520
(228) 467-9057
Camden Military Academy Photo - A proud family!
Gr: 7-12, PG
All-boys
520 Hwy. 1 North
Camden, SC 29020
(803) 432-6001
(21)
Missouri Military Academy Photo - Established in 1889, Missouri Military Academy has transformed young men into leaders who are well-educated, prepared gentlemen of character. Our long history and distinct traditions inspire a sense of pride and duty among the young men who seek to fulfill their potential at MMA.
Gr: 7-12, PG
All-boys (Non-denom. / Christian)
204 Grand Street
Mexico, MO 65265
(573) 581-1776
(7)
Riverside Military Academy Photo
Gr: 6-12
All-boys
2001 Riverside Drive
Gainesville, GA 30501
(678) 696-2116
(5)

Frequently Asked Questions

Which all-boys boarding schools have the highest average ACT scores?
The all-boys boarding schools with the highest average ACT scores are Chaminade College Preparatory School, Woodberry Forest School and McCallie School.
How many all-boys boarding schools are ranked for the highest average ACT scores?
11 all-boys boarding schools are ranked for the highest average ACT scores.

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Did You Know?

For several key reasons (listed below), these comparisons are intended only as informal reference points for evaluating the ACT taking ability of a school's student body.
A school's average ACT score is based on a relatively small sample of students from year to year (typically less than 100 students for a graduating class).
Average ACT scores, then, can naturally fluctuate year to year while the quality of the overall program and strength of the student body remains consistent.
Schools in the list below are often separated by small statistical differences, which for all intents and purposes, are not meaningful in determining the overall strength of the student body between two schools.
As a final note: average ACT scores should never be used by a family as an expectation of what score they can expect their child to receive if they go to a particular institution.

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