Smallest Average Class Size

All Schools
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 (2020).
  • 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 (2020)

Among All-Girls Schools (out of 23 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 - Basketball Team
    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 - Whether you ve been riding your whole life or have always wanted to you can find a place in our program. The Chatham Hall campus is home to more than 30 horses, three teaching arenas, a permanent Hunter Trials course, and plenty of trails. We teach hunt seat the Modern Forward Riding System with an emphasis on horse and rider
    All-Girls  (Episcopal)
    (3)
    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' campus is 130 acres located in Maryland's scenic horse country, and is close to cultural centers including Washington, DC, Baltimore, Philadelphia, and New York City and only 30 minutes from the international airport, BWI.
    All-Girls 
    (12)
    8

    Grades: 8-12
    1500 Glencoe Road
    Sparks Glencoe, MD 21152
    (410)472-4800
  • 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.-10.Rank: #6-10
    Foxcroft School
    Foxcroft School Photo - Foxcroft School House
    All-Girls 
    (9)
    10
    Grades: 9-12, PG
    22407 Foxhound Lane
    Middleburg, VA 20117
    (540)687-4340
  • 6.-10.Rank: #6-10
    Linden Hall School
    Linden Hall School Photo
    All-Girls 
    (5)
    10

    Grades: 6-12, PG
    212 East Main Street
    Lititz, PA 17543
    (717)626-8512
  • 6.-10.Rank: #6-10
    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 
    (3)
    10

    Grades: 9-12, PG
    492 Holmes Road
    Pittsfield, MA 01201
    (413)499-1300
  • 6.-10.Rank: #6-10
    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.-10.Rank: #6-10
    Stoneleigh-Burnham School
    Stoneleigh-Burnham School Photo - Music, visual arts, theater, and dance are fully integrated into our curriculum and that means our girls are encouraged to express themselves creatively every day. We offer beginning through advanced levels in Instrumental Performance, Studio Art, Vocal Music, Music Composition, Dance, and Theater with passionate faculty members who are established artists in their own fields.
    All-Girls 
    (15)
    10

    Grades: 7-12, PG
    574 Bernardston Road
    Greenfield, MA 01301
    (413)774-2711
  • 11.-12.Rank: #11-12
    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 
    11
    Grades: 9-12, PG
    205 Bidwell Parkway
    Buffalo, NY 14222
    (716)885-6780
  • 11.-12.Rank: #11-12
    Westover School
    Westover School Photo
    All-Girls 
    (12)
    11

    Grades: 9-12
    1237 Whittemore Rd.
    Middlebury, CT 06762
    (203)577-4521
  • 13.-18.Rank: #13-18
    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
  • 13.-18.Rank: #13-18
    The Ethel Walker School
    The Ethel Walker School Photo
    All-Girls 
    12

    Grades: 7-12, PG | 6-12, PG (day)
    230 Bushy Hill Road
    Simsbury, CT 06070
    (860)408-4200
  • 13.-18.Rank: #13-18
    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: 9-12, PG | 5-12, PG (day)
    4800 139th Avenue SE
    Bellevue, WA 98006
    (425)641-0700
  • 13.-18.Rank: #13-18
    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
  • 13.-18.Rank: #13-18
    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
  • 13.-18.Rank: #13-18
    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)
    12

    Grades: 9-12
    1500 Mark Thomas Drive
    Monterey, CA 93940
    (831)655-9356
  • 19.Rank: #19
    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
  • 20.-21.Rank: #20-21
    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
    The Hockaday School
    The Hockaday School Photo
    All-Girls 
    (1)
    15

    Grades: 8-12 | Pre-K-12 (day)
    11600 Welch Road
    Dallas, TX 75229
    (214)360-6526
  • 22.-23.Rank: #22-23
    Branksome Hall
    All-Girls 
    >15
    Grades: 7-12 | Pre-K-12 (day)
    10 Elm Avenue
    Toronto, Canada 00000
    (416)920-9741
  • 22.-23.Rank: #22-23
    Branksome Hall Asia
    Branksome Hall Asia Photo - Confident female leaders of the future
    All-Girls 
    >15

    Grades: 6-12 | Pre-K-12 (day)
    234 Global edu-ro, Daejeong-eup, Seogwipo-si
    Jeju-do, South Korea 63644
    +82 64-902-5000

Top School Listings by Category (2020)

Compare among: 

Selectivity
Lowest acceptance rates
Student Test Scores
Highest average SAT scores
Student Test Scores
Highest average SSAT score
Affordability
Least expensive tuition
Affordability
Highest percentage of students on financial aid
Student Attention
Smallest average class sizes
Student Attention
Lowest teacher:student ratio
Faculty Education
Highest percentage of faculty with advanced degrees
Boarding Focus
Highest percentage of boarding students
Diversity
Highest percentage of international students
Diversity
Highest percentage of students of color
Community Size
Largest student body (number of students)
Community Size
Smallest student body (number of students)
School Resources
Largest endowments
School Resources
Highest endowment per student
Offering Breadth
Most sports offered
Offering Breadth
Most extracurriculars offered
Offering Breadth
Most AP/advanced courses offered
School History
Oldest founding date
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