Smallest Average Class Size

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All Schools 
400+ students
400+ students 
200-400 students
200-400 students 
< 200 students
< 200 students 
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  • Among "All-Girls Schools", view the boarding schools with the smallest average class sizes (2019-20).
  • 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 (2019-20)

Among All-Girls Schools (out of 24 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 - April 2019 Retreat
    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 - Our renowned equestrian program takes learning out of the classroom and into the barn.
    All-Girls 
    (11)
    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 - The Commons is equal parts living room and dining room. The newest building on campus, the Commons is a gathering space that houses the dining hall and the new Redlands Cafe.
    All-Girls  (Episcopal)
    (2)
    8

    Grades: 9-12, PG
    8400 Greenspring Avenue
    Stevenson, MD 21153
    (410)486-7401
  • 5.-7.Rank: #5-7
    Grier School
    Grier School Photo
    All-Girls 
    (5)
    9
    Grades: 7-12, PG
    2522 Grier School Road
    Tyrone, PA 16686
    (814)684-3000
  • 5.-7.Rank: #5-7
    Purnell School
    Purnell School Photo - Ninth grade students work on creating their own Advice Blog during their Seminar Class. Their blog is a part of Purnell's award-winning Affinities Program.
    All-Girls 
    (1)
    9

    Grades: 9-12, PG
    51 Pottersville Road, P.O. Box 500
    Pottersville, NJ 07979
    (908)439-4009
  • 5.-7.Rank: #5-7
    Stoneleigh-Burnham School
    Stoneleigh-Burnham School Photo - Stoneleigh-Burnham offers one of the premier equestrian centers among secondary schools in the U.S. Our equestrian center is located on campus and that means girls can walk from their classes and dorm rooms directly to the barn. Every rider, from the complete novice to the advanced jumper, receives personalized instruction from experienced coaches that reflects her interests, goals, and abilities.
    All-Girls 
    (15)
    9

    Grades: 7-12, PG
    574 Bernardston Road
    Greenfield, MA 01301
    (413)774-2711
  • 8.-12.Rank: #8-12
    Foxcroft School
    Foxcroft School Photo - Foxcroft School House
    All-Girls 
    (7)
    10
    Grades: 9-12, PG
    22407 Foxhound Lane
    Middleburg, VA 20117
    (540)687-4340
  • 8.-12.Rank: #8-12
    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
  • 8.-12.Rank: #8-12
    Miss Hall's School
    Miss Hall's School Photo - The Athletic Department at Miss Hall's instills in student-athletes the values of fitness, teamwork, and competition while inspiring each girl to master physical skills, envision her potential, strive to attain goals, build confidence, and experience the power of community pride.
    All-Girls 
    (3)
    10

    Grades: 9-12, PG
    492 Holmes Road, PO Box 1166
    Pittsfield, MA 01201
    (413)499-1300
  • 8.-12.Rank: #8-12
    Miss Porter's School
    Miss Porter's School Photo
    All-Girls 
    (5)
    10

    Grades: 9-12
    60 Main Street
    Farmington, CT 06032
    (860)409-3530
  • 8.-12.Rank: #8-12
    St. Margaret's School
    St. Margaret's School Photo - BELIEVE IN SOMETHING GREATER. * What kind of person will you be? Honest? Trustworthy? Responsible? * Our honor code inspires a culture of honesty and promotes trust in one another. * We have confidence that you will do the right thing, even when no one is watching. * We believe in you.
    All-Girls  (Episcopal)
    (6)
    10

    Grades: 8-12, PG
    PO Box 158, 444 Water Lane
    Tappahannock, VA 22560
    (804)443-3357
  • 13.-14.Rank: #13-14
    Buffalo Seminary
    Buffalo Seminary Photo - Our one-to-one tablet computer program gives each girl instant access to a wealth of information.
    All-Girls 
    11
    Grades: 9-12, PG
    205 Bidwell Parkway
    Buffalo, NY 14222
    (716)885-6780
  • 13.-14.Rank: #13-14
    Westover School
    Westover School Photo
    All-Girls 
    (12)
    11

    Grades: 9-12
    1237 Whittemore Rd.
    Middlebury, CT 06762
    (203)577-4521
  • 15.-19.Rank: #15-19
    Dana Hall School
    Dana Hall School Photo - Experimentation. Exploration. Creativity. Dana Hall`s visual artists are sensitive observers of themselves and the world around them.
    All-Girls 
    (6)
    12
    Grades: 9-12 | 5-12 (day)
    45 Dana Road
    Wellesley, MA 02482
    (781)489-1331
  • 15.-19.Rank: #15-19
    The Ethel Walker School
    The Ethel Walker School Photo
    All-Girls 
    12

    Grades: 9-12, PG | 6-12, PG (day)
    230 Bushy Hill Road
    Simsbury, CT 06070
    (860)408-4200
  • 15.-19.Rank: #15-19
    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
  • 15.-19.Rank: #15-19
    The Madeira School
    The Madeira School Photo - Madeira's 376-acre campus in McLean, Virginia, overlooks the Potomac River from a perch just 12 miles northwest of Washington, D.C.
    All-Girls 
    (2)
    12

    Grades: 9-12, PG
    8328 Georgetown Pike
    McLean, VA 22102-1200
    (703)556-8273
  • 15.-19.Rank: #15-19
    Santa Catalina School
    Santa Catalina School Photo - Volleyball in the Gym
    All-Girls  (Catholic)
    (1)
    12

    Grades: 9-12
    1500 Mark Thomas Drive
    Monterey, CA 93940
    (831)655-9356
  • 20.Rank: #20
    Saint Mary's School
    Saint Mary's School Photo - Saint Mary's School, established in 1842, is an independent, Episcopal, college-preparatory boarding and day school for girls in grades 9-12 in Raleigh, North Carolina. It is the fourth oldest girls' boarding/day school in the United States.
    All-Girls  (Episcopal)
    13
    Grades: 9-12
    900 Hillsborough Street
    Raleigh, NC 27603
    (919)424-4100
  • 21.-22.Rank: #21-22
    Garrison Forest School
    Garrison Forest School Photo - View of Shriver Hall, which houses the health suite and dorm rooms for boarders.
    All-Girls 
    15
    Grades: 8-12 | Pre-K-12 (day)
    300 Garrison Forest Road
    Owings Mills, MD 21117
    (410)559-3111
  • 21.-22.Rank: #21-22
    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
  • 23.-24.Rank: #23-24
    Branksome Hall
    Branksome Hall Photo
    All-Girls 
    >15
    Grades: 7-12 | Pre-K-12 (day)
    10 Elm Avenue
    Toronto, Canada 00000
    (416)920-9741
  • 23.-24.Rank: #23-24
    Branksome Hall Asia
    All-Girls 
    >15

    Grades: 6-12 | Pre-K-12 (day)
    234 Global edu-ro, Daejeong-eup, Seogwipo-si
    Jeju-do, South Korea 63644
    82649025072

Top School Listings by Category (2019-20)

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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