Among "All-Boys Schools", view the boarding schools with the smallest average class sizes (2026).
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: 4
20
Avg. # Students: 13
Smallest Average Class Size
Among All-Boys Schools (out of 27 schools)
Sorted by range (alphabetically within range)
Boarding School
# Students
Grades
Location
Rank: #1-21.-2
The Greenwood School ![The Greenwood School Photo - "Makers of Vermont" is a signature program at The Greenwood School in VT, where students learn to craft metal objects and tools in our blacksmith's forge.]( "The Greenwood School Photo - \"Makers of Vermont\" is a signature program at The Greenwood School in VT, where students learn to craft metal objects and tools in our blacksmith's forge.")
All-Boys
# Students: 4
Grades: 6-12
14 Greenwood Lane
Putney, VT 05346
(802) 387-4545
Putney, VT 05346
(802) 387-4545
Rank: #2-72.-7
# Students: 9
Grades: 9-12
273 Mayo Drive
St. George, VA 22935
(434) 985-2811
St. George, VA 22935
(434) 985-2811
Rank: #2-72.-7
# Students: 9
Grades: 9-12
241 Woodberry Station
Woodberry Forest, VA 22989
(888) 798-9371
Woodberry Forest, VA 22989
(888) 798-9371
Rank: #4-104.-10
# Students: 10
Grades: 8-12 | 6-12 (day)
225 S. Wayne Avenue
Waynesboro, VA 22980
(540) 946-7706
Waynesboro, VA 22980
(540) 946-7706
Rank: #4-104.-10
# Students: 10
Grades: 7-12, PG
200 Military Drive
Chatham, VA 24531
(800) 432-2480
Chatham, VA 24531
(800) 432-2480
Rank: #6-146.-14
# Students: 11
Grades: 8-12
500 Christ School Road
Asheville, NC 28704
(828) 684-6232
Asheville, NC 28704
(828) 684-6232
Rank: #6-146.-14
# Students: 11
Grades: 7-12, PG
320 Iwo Jima Blvd
Harlingen, TX 78550
(956) 423-6006
Harlingen, TX 78550
(956) 423-6006
Rank: #6-146.-14
# Students: 11
Grades: 7-12, PG
1001 Eagle Road
Wayne, PA 19087
(610) 989-1399
Wayne, PA 19087
(610) 989-1399
Rank: #9-239.-23
# Students: 12
Grades: 9-12, PG
500 Old Farms Road
Avon, CT 06001
(800) 464-2866
Avon, CT 06001
(800) 464-2866
Rank: #9-239.-23
Bridgton Academy
All-Boys
# Students: 12
Grades: 12-12, PG
11 Academy Lane
North Bridgton, ME 04057
(207) 647-3322
North Bridgton, ME 04057
(207) 647-3322
Rank: #9-239.-23
# Students: 12
Grades: 6-9
62 Alumni Drive
Canaan, NH 03741
(603) 523-3548
Canaan, NH 03741
(603) 523-3548
Rank: #9-239.-23
# Students: 12
Grades: 7-12, PG
PO Box 278, 4744 James Madison Hwy
Fork Union, VA 23055
(434) 842-4205
Fork Union, VA 23055
(434) 842-4205
Rank: #9-239.-23
Hillside School
All-Boys
# Students: 12
Grades: 4-9
404 Robin Hill Street
Marlborough, MA 01752
(508) 485-3483
Marlborough, MA 01752
(508) 485-3483
Rank: #9-239.-23
# Students: 12
Grades: 6-12
2001 Riverside Drive
Gainesville, GA 30501
(877) 692-2338
Gainesville, GA 30501
(877) 692-2338
Rank: #9-239.-23
# Students: 12
Grades: 9-12, PG
251 Canaan Road
Salisbury, CT 06068
(860) 435-5732
Salisbury, CT 06068
(860) 435-5732
Rank: #9-239.-23
# Students: 12
Grades: 6-12
174 Ward Circle
Camp Hill, AL 36850
(256) 790-9202
Camp Hill, AL 36850
(256) 790-9202
Rank: #9-239.-23
# Students: 12
Grades: 8-12, PG | 7-12, PG (day)
700 Route 22
Pawling, NY 12564
(845) 855-4825
Pawling, NY 12564
(845) 855-4825
Rank: #18-2418.-24
Mount Michael Benedictine School ![Mount Michael Benedictine School Photo]( "Mount Michael Benedictine School Photo")
All-Boys (Catholic)
# Students: 13
Grades: 9-12
22520 Mount Michael Road
Elkhorn, NE 68022
(402) 238-1457
Elkhorn, NE 68022
(402) 238-1457
Rank: #19-2619.-26
# Students: 14
Grades: 9-12, PG | 6-12, PG (day)
500 Dodds Avenue
Chattanooga, TN 37404
(423) 624-8300
Chattanooga, TN 37404
(423) 624-8300
Rank: #19-2619.-26
# Students: 14
Grades: 7-12, PG
204 Grand Street
Mexico, MO 65265
(573) 581-1776
Mexico, MO 65265
(573) 581-1776
Rank: #21-2921.-29
# Students: 15
Grades: 7-12
2605 Carlsbad Blvd.
Carlsbad, CA 92008
(888) 762-2338
Carlsbad, CA 92008
(888) 762-2338
Rank: #21-2921.-29
# Students: 15
Grades: 7-12, PG
520 Hwy. 1 North
Camden, SC 29020
(803) 432-6001
Camden, SC 29020
(803) 432-6001
Rank: #21-2921.-29
# Students: 15
Grades: 7-12
405 North Subiaco Avenue
Subiaco, AR 72865
(479) 934-1000
Subiaco, AR 72865
(479) 934-1000
Rank: #24-3324.-33
# Students: >15
Grades: 9-12
10900 Rockville Pike
North Bethesda, MD 20852
(301) 214-1215
North Bethesda, MD 20852
(301) 214-1215
Rank: #24-3324.-33
Chaminade College Preparatory School ![Chaminade College Preparatory School Photo - Chaminade is located 20 minutes outside of Downtown St. Louis in the lovely, safe, green neighborhood of Creve Coeur. Our 55 acre campus is fun and lively throughout the school year and a wonderful place not only to study and play but also to become part of the family.]( "Chaminade College Preparatory School Photo - Chaminade is located 20 minutes outside of Downtown St. Louis in the lovely, safe, green neighborhood of Creve Coeur. Our 55 acre campus is fun and lively throughout the school year and a wonderful place not only to study and play but also to become part of the family.")
All-Boys (Catholic)
# Students: >15
Grades: 6-12
425 South Lindbergh Blvd.
St. Louis, MO 63131
(314) 692-6645
St. Louis, MO 63131
(314) 692-6645
Rank: #24-3324.-33
St. George's School, Vancouver
All-Boys (Anglican tradition)
# Students: >15
Grades: 8-12 | K-12 (day)
4175 West 29th Avenue
Vancouver, BC, Canada V6S1V1
(604) 221-3890
Vancouver, BC, Canada V6S1V1
(604) 221-3890
Rank: #24-3324.-33
Saint Stanislaus High School
All-Boys (Catholic)
# Students: >15
Grades: 7-12
304 S. Beach Blvd.
Bay St. Louis, MS 39520
(228) 467-9057
Bay St. Louis, MS 39520
(228) 467-9057
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