Smallest Average Class Size

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All Schools 
400+ students
400+ students 
200-400 students
200-400 students 
< 200 students
< 200 students 
More
Among "All-Girls Schools", view the boarding schools with the smallest average class sizes (2021-22).
Keep in mind that small statistical differences in average class sizes between schools do not always indicate better student performance at one school or another.
Also keep in mind that boarding schools in general have smaller average class sizes than public schools - even for schools with larger class sizes, a "large" class in a boarding school would still often be considered small by public school standards which often have class sizes of 20 students.

Smallest Average Class Size (2021-22)

Among All-Girls Schools (out of 21 schools)

Sorted by range (alphabetically within range)
  • Boarding School # Students Grades Location
  • 1.-4.Rank: #1-4
    Academy of the Holy Family
    Academy of the Holy Family Photo - School year 2020-2021
    All-Girls  (Catholic)
    8
    Grades: 9-12
    54 W. Main Street Box 691
    Baltic, CT 06330
    (860) 822-6279
  • 1.-4.Rank: #1-4
    Chatham Hall
    Chatham Hall Photo - Chatham Hall's campus was built to promote community and collaboration.
    All-Girls  (Episcopal)
    (4)
    8

    Grades: 9-12
    800 Chatham Hall Circle
    Chatham, VA 24531
    (434) 432-5516
  • 1.-4.Rank: #1-4
    Oldfields School
    Oldfields School Photo - Oldfields School`s Mission is to embrace each student`s authentic self, educate through collaboration, empower the individual voice, and inspire confidence and continual growth, leading to a life of purpose.
    All-Girls 
    (12)
    8

    Grades: 8-12
    1500 Glencoe Road
    Sparks Glencoe, MD 21152
    (443) 662-1050
  • 1.-4.Rank: #1-4
    St. Timothy's School
    St. Timothy's School Photo - Completed in 2012, Dixon Hall is our state-of-the-art academic building. The technology-rich facility features the Taft Lecture Hall, the Coleman World Languages and Cultures Center, and a Center for Learning and Teaching.
    All-Girls  (Episcopal)
    (2)
    8

    Grades: 9-12, PG
    8400 Greenspring Avenue
    Stevenson, MD 21153
    (410) 486-7401
  • 5.Rank: #5
    Grier School
    Grier School Photo
    All-Girls 
    (6)
    9
    Grades: 7-12, PG
    2522 Grier School Road
    Tyrone, PA 16686
    (814) 684-3000
  • 6.-8.Rank: #6-8
    Miss Hall's School
    Miss Hall's School Photo - A talented, supportive community of learners awaits you at MHS. Our faculty are dedicated mentors who are passionate about their subjects and creative in their teaching, unafraid to ditch the textbook in favor of collaborative, project-based learning.
    All-Girls 
    (4)
    10
    Grades: 9-12, PG
    492 Holmes Road
    Pittsfield, MA 01201
    (413) 499-1300
  • 6.-8.Rank: #6-8
    St. Margaret's School
    St. Margaret's School Photo - WE BELIEVE YOU BELONG HERE. * 10 acre historic waterfront campus * 42 acre athletic complex * Within 2 hours of Washington, DC, Richmond, Charlottesville, Williamsburg, and Virginia Beach
    All-Girls  (Episcopal)
    (6)
    10

    Grades: 8-12, PG
    PO Box 158, 444 Water Lane
    Tappahannock, VA 22560
    (804) 443-3357
  • 6.-8.Rank: #6-8
    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)
    10

    Grades: 7-12, PG
    574 Bernardston Road
    Greenfield, MA 01301
    (413) 774-2711
  • 9.Rank: #9
    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)
    11
    Grades: 9-12
    1500 Mark Thomas Drive
    Monterey, CA 93940
    (831) 655-9356
  • 10.-16.Rank: #10-16
    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 
    12
    Grades: 9-12, PG
    205 Bidwell Parkway
    Buffalo, NY 14222
    (716) 885-6780
  • 10.-16.Rank: #10-16
    Dana Hall School
    Dana Hall School Photo - The Dana Hall Dragons are ready to roar.
    All-Girls 
    (6)
    12

    Grades: 9-12 | 5-12 (day)
    45 Dana Road
    Wellesley, MA 02482
    (781) 489-1331
  • 10.-16.Rank: #10-16
    The Ethel Walker School
    The Ethel Walker School Photo - Beaver Brook Building - This building houses many of our academic classes as well as administrative offices, meeting spaces, art rooms, and our computer lab.
    All-Girls 
    12

    Grades: 7-12, PG | 6-12, PG (day)
    230 Bushy Hill Road
    Simsbury, CT 06070
    (860) 408-4200
  • 10.-16.Rank: #10-16
    Forest Ridge School of the Sacred Heart
    Forest Ridge School of the Sacred Heart Photo - Situated on 19 acres, the Forest Ridge campus is home to 9 different buildings, including the Lee Theatre and Performing Arts Center and Shumway Field. In 2006, the school added a new High School building and Sacred Heart Center.
    All-Girls  (Catholic)
    12

    Grades: 8-12 | 5-12 (day)
    4800 139th Avenue SE
    Bellevue, WA 98006
    (425) 641-0700
  • 10.-16.Rank: #10-16
    The Madeira School
    The Madeira School Photo - Capitol Hill internships in the offices of senators and representatives are a hallmark of the junior year at Madeira
    All-Girls 
    (2)
    12

    Grades: 9-12, PG
    8328 Georgetown Pike
    McLean, VA 22102-1200
    (703) 556-8273
  • 10.-16.Rank: #10-16
    Miss Porter's School
    Miss Porter's School Photo
    All-Girls 
    (5)
    12

    Grades: 9-12
    60 Main Street
    Farmington, CT 06032
    (860) 409-3530
  • 10.-16.Rank: #10-16
    Westover School
    Westover School Photo
    All-Girls 
    (12)
    12

    Grades: 9-12, PG
    1237 Whittemore Rd.
    Middlebury, CT 06762
    (203) 577-4521
  • 17.Rank: #17
    Saint Mary's School
    Saint Mary's School Photo - Saint Mary's School offers a historic, 23-acre campus in the heart of Raleigh, North Carolina, and is only minutes from the renowned Research Triangle. Its unique location provides a vibrant 24/7 campus with unlimited opportunities for learning both on and off campus.
    All-Girls  (Episcopal)
    (1)
    13
    Grades: 9-12
    900 Hillsborough Street
    Raleigh, NC 27603
    (919) 424-4100
  • 18.Rank: #18
    Foxcroft School
    Foxcroft School Photo - Schoolhouse
    All-Girls 
    (9)
    14
    Grades: 9-12, PG
    22407 Foxhound Lane
    Middleburg, VA 20117
    (540) 687-4340
  • 19.Rank: #19
    Garrison Forest School
    Garrison Forest School Photo - G. Peter O'Neill Middle School
    All-Girls 
    15
    Grades: 8-12 | Pre-K-12 (day)
    300 Garrison Forest Road
    Owings Mills, MD 21117
    (410) 559-3111
  • 20.-21.Rank: #20-21
    Branksome Hall Asia
    Branksome Hall Asia Photo - Branksome Hall Asia is a day and boarding school for girls in grades 6-12.
    All-Girls 
    >15
    Grades: 5-12 | Pre-K-12 (day)
    234 Global edu-ro, Daejeong-eup, Seogwipo-si
    Jeju-do, South Korea 63644
    82649025000
  • 20.-21.Rank: #20-21
    Branksome Hall
    Branksome Hall Photo
    All-Girls 
    >15

    Grades: 7-12 | Pre-K-12 (day)
    10 Elm Avenue
    Toronto, Canada m4w 1n4
    (416) 920-9741
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