Garrison Forest School Photo - One of the entrances to Garrison Forest School.

Highest Average ACT Scores

Among "All-Girls Schools", view the boarding schools with the highest average ACT scores (2024-25).
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.
Average ACT Score
(Out of 36) Range:
24
31 Avg. Average ACT Score
(Out of 36):
28

Highest Average ACT Scores

Among All-Girls Schools (out of 10 schools)

Sorted by range (alphabetically within range)
Boarding School
Average ACT Score
(Out of 36)
Grades
Location
Rank: #1-31.-3
Dana Hall School
Dana Hall School Photo - Dana Hall focuses on providing an education with purpose-one that is infused with helping girls navigate and articulate what's important to them.
All-Girls
(6)
Average ACT Score
(Out of 36):
30-32
Grades: 9-12  | 5-12 (day)
45 Dana Road
Wellesley, MA 02482
(781) 489-1331
Rank: #1-31.-3
Miss Porter's School
Miss Porter's School Photo
All-Girls
(5)
Average ACT Score
(Out of 36):
30-32
Grades: 9-12
60 Main Street
Farmington, CT 06032
(860) 409-3530
Rank: #1-31.-3
Westover School
Westover School Photo
All-Girls
(12)
Average ACT Score
(Out of 36):
30-32
Grades: 9-12
1237 Whittemore Rd.
Middlebury, CT 06762
(203) 577-4521
Rank: #4-54.-5
Grier School
Grier School Photo
All-Girls
(6)
Average ACT Score
(Out of 36):
28-30
Grades: 7-12, PG  | 5-12, PG (day)
2522 Grier School Road
Tyrone, PA 16686
(814) 684-3000
Rank: #4-54.-5
Santa Catalina School
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.
All-Girls (Catholic)
(1)
Average ACT Score
(Out of 36):
28-30
Grades: 9-12
1500 Mark Thomas Drive
Monterey, CA 93940
(831) 655-9356
Rank: #6-76.-7
Garrison Forest School
Garrison Forest School Photo - One of the entrances to Garrison Forest School.
All-Girls
Average ACT Score
(Out of 36):
26-28
Grades: 8-12  | PK-12 (day)
300 Garrison Forest Road
Owings Mills, MD 21117
(410) 559-3111
Rank: #6-76.-7
Stoneleigh-Burnham School
Stoneleigh-Burnham School Photo - Our challenging and supportive learning environment encourages appropriate risk-taking by providing a safe space for making mistakes. Stoneleigh-Burnham School offers the International Baccalaureate (IB) Diploma Programme.
All-Girls
(15)
Average ACT Score
(Out of 36):
26-28
Grades: 7-12, PG
574 Bernardston Road
Greenfield, MA 01301
(413) 774-2711
Rank: #8-108.-10
Buffalo Seminary
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. ..
All-Girls
Average ACT Score
(Out of 36):
24-26
Grades: 9-12, PG
205 Bidwell Parkway
Buffalo, NY 14222
(716) 885-6780
Rank: #8-108.-10
Chatham Hall
Chatham Hall Photo - Chatham Hall's campus was built to promote community and collaboration.
All-Girls (Episcopal)
(5)
Average ACT Score
(Out of 36):
24-26
Grades: 9-12
800 Chatham Hall Circle
Chatham, VA 24531
(434) 432-5516
Rank: #8-108.-10
Saint Mary's School
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!
All-Girls (Episcopal)
(1)
Average ACT Score
(Out of 36):
24-26
Grades: 9-12
900 Hillsborough Street
Raleigh, NC 27603
(919) 424-4100

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