Among "All-Girls Schools", view the boarding schools with the smallest average class sizes (2023).
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.
# Students Range: 7
20
Avg. # Students: 12
Smallest Average Class Size
Among All-Girls Schools (out of 25 schools)
Sorted by range (alphabetically within range)
Boarding School
# Students
Grades
Location
Rank: #11
# Students: 7
Grades: 9-12
800 Chatham Hall Circle
Chatham, VA 24531
(434) 432-5516
Chatham, VA 24531
(434) 432-5516
Rank: #2-42.-4
Academy of the Holy Family![Academy of the Holy Family Photo - Thanksgiving Dinner Academy of the Holy Family Photo - Thanksgiving Dinner]()

All-Girls (Catholic)
# Students: 8
Grades: 9-12
54 W. Main Street Box 691
Baltic, CT 06330
(860) 822-6279
Baltic, CT 06330
(860) 822-6279
Rank: #2-42.-4
# Students: 8
Grades: 8-12
1500 Glencoe Road
Sparks Glencoe, MD 21152
(443) 662-1050
Sparks Glencoe, MD 21152
(443) 662-1050
Rank: #2-42.-4
# Students: 8
Grades: 9-12, PG
8400 Greenspring Avenue
Stevenson, MD 21153
(410) 486-7401
Stevenson, MD 21153
(410) 486-7401
Rank: #55
# Students: 9
Grades: 7-12, PG
2522 Grier School Road
Tyrone, PA 16686
(814) 684-3000
Tyrone, PA 16686
(814) 684-3000
Rank: #6-106.-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. .. 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
# Students: 10
Grades: 9-12, PG
205 Bidwell Parkway
Buffalo, NY 14222
(716) 885-6780
Buffalo, NY 14222
(716) 885-6780
Rank: #6-106.-10
Linden Hall![Linden Hall Photo Linden Hall Photo]()

All-Girls
# Students: 10
Grades: 6-12, PG
212 E Main Street
Lititz, PA 17543
(717) 626-8512
Lititz, PA 17543
(717) 626-8512
Rank: #6-106.-10
# Students: 10
Grades: 9-12, PG
492 Holmes Road
Pittsfield, MA 01201
(413) 499-1300
Pittsfield, MA 01201
(413) 499-1300
Rank: #6-106.-10
# Students: 10
Grades: 8-12, PG
PO Box 158, 444 Water Lane
Tappahannock, VA 22560
(804) 443-3357
Tappahannock, VA 22560
(804) 443-3357
Rank: #6-106.-10
# Students: 10
Grades: 7-12, PG
574 Bernardston Road
Greenfield, MA 01301
(413) 774-2711
Greenfield, MA 01301
(413) 774-2711
Rank: #1111
# Students: 11
Grades: 9-12, PG
22407 Foxhound Lane
Middleburg, VA 20117
(540) 687-4340
Middleburg, VA 20117
(540) 687-4340
Rank: #12-1712.-17
# Students: 12
Grades: 9-12 | 5-12 (day)
45 Dana Road
Wellesley, MA 02482
(781) 489-1331
Wellesley, MA 02482
(781) 489-1331
Rank: #12-1712.-17
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. 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
# Students: 12
Grades: 7-12, PG | 6-12, PG (day)
230 Bushy Hill Road
Simsbury, CT 06070
(860) 408-4200
Simsbury, CT 06070
(860) 408-4200
Rank: #12-1712.-17
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. 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)
# Students: 12
Grades: 8-12 | 5-12 (day)
4800 139th Avenue SE
Bellevue, WA 98006
(425) 641-0700
Bellevue, WA 98006
(425) 641-0700
Rank: #12-1712.-17
# Students: 12
Grades: 9-12, PG
8328 Georgetown Pike
McLean, VA 22102
(703) 556-8273
McLean, VA 22102
(703) 556-8273
Rank: #12-1712.-17
# Students: 12
Grades: 9-12
60 Main Street
Farmington, CT 06032
(860) 409-3530
Farmington, CT 06032
(860) 409-3530
Rank: #12-1712.-17
# Students: 12
Grades: 9-12
1237 Whittemore Rd.
Middlebury, CT 06762
(203) 577-4521
Middlebury, CT 06762
(203) 577-4521
Rank: #1818
# Students: 13
Grades: 9-12
1500 Mark Thomas Drive
Monterey, CA 93940
(831) 655-9356
Monterey, CA 93940
(831) 655-9356
Rank: #19-2119.-21
Garrison Forest School![Garrison Forest School Photo - G. Peter O'Neill Middle School Garrison Forest School Photo - G. Peter O'Neill Middle School]()

All-Girls
# Students: 15
Grades: 8-12 | PK-12 (day)
300 Garrison Forest Road
Owings Mills, MD 21117
(410) 559-3111
Owings Mills, MD 21117
(410) 559-3111
Rank: #19-2119.-21
Life Quest Girls Academy![Life Quest Girls Academy Photo - Located in beautiful Southern Utah, our campus is the perfect way to study, grow, and play. Life Quest Girls Academy Photo - Located in beautiful Southern Utah, our campus is the perfect way to study, grow, and play.]()

All-Girls
# Students: 15
Grades: 6-12, PG
69 East 100 South
Parowan, UT 84761
(435) 294-3129
Parowan, UT 84761
(435) 294-3129
Rank: #19-2119.-21
# Students: 15
Grades: 9-12
900 Hillsborough Street
Raleigh, NC 27603
(919) 424-4100
Raleigh, NC 27603
(919) 424-4100
Rank: #22-2522.-25
Trafalgar Castle School![Trafalgar Castle School Photo Trafalgar Castle School Photo]()

All-Girls
# Students: >15
Grades: 7-12 | 4-12 (day)
401 Reynolds Street
Whitby, Canada L1M2P3
(905) 668-3358
Whitby, Canada L1M2P3
(905) 668-3358
Rank: #22-2522.-25
Flintridge Sacred Heart Academy
All-Girls (Catholic)
# Students: >15
Grades: 9-12
440 N. St. Katherine Drive
La Canada, CA 91011
(626) 685-8521
La Canada, CA 91011
(626) 685-8521
Rank: #22-2522.-25
Branksome Hall![Branksome Hall Photo Branksome Hall Photo]()

All-Girls
# Students: >15
Grades: 7-12 | Pre-K-12 (day)
10 Elm Avenue
Toronto, Canada m4w 1n4
(416) 920-9741
Toronto, Canada m4w 1n4
(416) 920-9741
Rank: #22-2522.-25
Branksome Hall Asia![Branksome Hall Asia Photo - Branksome Hall Asia boasts a world-class campus at 24 acres, including Olympic-sized ice rink and swimming pool, 3 Makerspaces with 30 3D printers, 3 boarding houses, a state-of-the-art library, fitness center, soccer pitches, and many more. Branksome Hall Asia Photo - Branksome Hall Asia boasts a world-class campus at 24 acres, including Olympic-sized ice rink and swimming pool, 3 Makerspaces with 30 3D printers, 3 boarding houses, a state-of-the-art library, fitness center, soccer pitches, and many more.]()

All-Girls
# Students: >15
Grades: 5-12 | Pre-K-12 (day)
234 Global edu-ro, Daejeong-eup, Seogwipo-si
Jeju-do, South Korea 63644
82649025000
Jeju-do, South Korea 63644
82649025000
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