Highest Average ACT Scores

The average ACT score across the 11 ranked all-girls boarding schools is 27 (2026-27).
Among all-girls boarding schools, the one with the highest average ACT score is Dana Hall School, with 31.

Quick Facts (26-27)

  • # All-Girls Schools Ranked: 11
  • Top 20 Range (Average ACT Score): 24–31
  • All-Girls Schools Avg.: 27
  • National Avg.: 27

Quick Facts (26-27)

  • # All-Girls Schools Ranked: 11
  • Top 20 Range (Average ACT Score): 24–31
  • All-Girls Schools Avg.: 27
  • 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: 24–31, avg 27)
Average ACT Score
(Out of 36) Range:
24
31 Avg. Average ACT Score
(Out of 36):
27

Highest Average ACT Scores (2026-27)

Among All-Girls Schools (out of 11 schools)

Sorted by range (alphabetically within range)
Dana Hall School Photo
#1(T1–T2)Dana Hall School
Gr: 9-12 | 5-12 (day)
All-girls
45 Dana Road
Wellesley, MA 02482
(781) 489-1331
(6)
Linden Hall School for Girls Photo
Gr: 6-12, PG
All-girls
212 E Main Street
Lititz, PA 17543
(717) 626-8512
Emma Willard School Photo
Gr: 9-12, PG
All-girls
285 Pawling Avenue
Troy, NY 12180
(518) 833-1320
(9)
Garrison Forest School Photo - One of the entrances to Garrison Forest School.
Gr: 8-12 | PK-12 (day)
All-girls
300 Garrison Forest Road
Owings Mills, MD 21117
(410) 559-3111
Grier School Photo
#3(T3–T6)Grier School
Gr: 7-12, PG | 5-12, PG (day)
All-girls
2522 Grier School Road
Birmingham, PA 16686
(814) 684-3000
(6)
Westover School Photo
#3(T3–T6)Westover School
Gr: 9-12, PG
All-girls
1237 Whittemore Rd.
Middlebury, CT 06762
(203) 577-4521
(12)
Santa Catalina School Photo - Come visit our beautiful campus in Monterey, California! Call the admission office at 831.655.9356 or email admission@santacatalina.org to schedule your visit.
Gr: 9-12
All-girls (Catholic)
1500 Mark Thomas Drive
Monterey, CA 93940
(831) 655-9356
(1)
Buffalo Seminary Photo - Our oldest tradition may be forward thinking but we are anchored in many other traditions too. Roses and white dresses for commencement. Our Social & Academic Honor Code. Morning Meeting to start the day. ..
#8(T8–T11)Buffalo Seminary
Gr: 9-12, PG
All-girls
205 Bidwell Parkway
Buffalo, NY 14222
(716) 885-6780
Chatham Hall Photo - Our students thrive in a dynamic environment designed specifically for their success.
#8(T8–T11)Chatham Hall
Gr: 9-12
All-girls (Episcopal)
800 Chatham Hall Circle
Chatham, VA 24531
(434) 432-5516
(5)
Miss Porter's School Photo
Gr: 9-12
All-girls
60 Main Street
Farmington, CT 06032
(860) 409-3530
(6)
Saint Mary's School Photo - At Saint Mary's School, girls take center stage. We know girls and we know the all-girl learning environment at Saint Mary's School inspires girls to step outside their comfort zone, engage their minds, amplify their voices, and discover who they are and who they want to become!
Gr: 9-12
All-girls (Episcopal)
900 Hillsborough Street
Raleigh, NC 27603
(919) 424-4100
(1)

Frequently Asked Questions

Which all-girls boarding schools have the highest average ACT scores?
The all-girls boarding schools with the highest average ACT scores are Dana Hall School, Linden Hall School for Girls and Emma Willard School.
How many all-girls boarding schools are ranked for the highest average ACT scores?
11 all-girls 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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