Smallest Average Class Size

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.
The Greenwood School
Blue Ridge School
Woodberry Forest School
Fishburne Military School
Hargrave Military Academy
Christ School
Valley Forge Military Academy
Bridgton Academy
Cardigan Mountain School
Fork Union Military Academy
Hillside School
Riverside Preparatory Academy
Salisbury School
Southern Preparatory Academy
Trinity-Pawling School
Mount Michael Benedictine School
McCallie School
Missouri Military Academy
Army and Navy Academy
# 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)
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.
Gr: 6-12
All-boys
14 Greenwood Lane
Putney, VT 05346
(802) 387-4545
Blue Ridge School Photo - Our lake offers students a chance to relax, fish, canoe - in the center of campus.
Gr: 9-12
All-boys (Non-denominational Christian)
273 Mayo Drive
St. George, VA 22935
(434) 985-2811
(7)
Woodberry Forest School Photo
Gr: 9-12
All-boys (Non-denom. / Christian)
241 Woodberry Station
Woodberry Forest, VA 22989
(888) 798-9371
(2)
Fishburne Military School Photo
Gr: 8-12 | 6-12 (day)
All-boys
225 S. Wayne Avenue
Waynesboro, VA 22980
(540) 946-7706
(7)
Hargrave Military Academy Photo - Hargrave is first and foremost a college preparatory boarding school. Our objective is to develop our cadets into leaders of character prepared for lifelong success.
Gr: 7-12, PG
All-boys (Christian)
200 Military Drive
Chatham, VA 24531
(800) 432-2480
(6)
Christ School Photo
#6(T6–T14)Christ School
Gr: 8-12
All-boys (Episcopal Church)
500 Christ School Road
Asheville, NC 28704
(828) 684-6232
(1)
Harlingen, TX
Gr: 7-12, PG
All-boys
320 Iwo Jima Blvd
Harlingen, TX 78550
(956) 423-6006
(1)
Valley Forge Military Academy Photo - VFMA offers college preparatory academics, credentialed faculty, competitive PIAA athletics, and individual attention, providing cadets with an environment focused on their academic success.
Gr: 7-12, PG
All-boys (Non-denom. / Christian)
1001 Eagle Road
Wayne, PA 19087
(610) 989-1399
(2)
Avon, CT
Gr: 9-12, PG
All-boys
500 Old Farms Road
Avon, CT 06001
(800) 464-2866
(6)
Bridgton Academy Photo - Our Humanities Center is one of two academic buildings on campus, and the hub for our academic administration, Focused Academic Coaching, Academic Support, and the Marcella/Sands Lecture Hall.
#9(T9–T23)Bridgton Academy
Gr: 12-12, PG
All-boys
11 Academy Lane
North Bridgton, ME 04057
(207) 647-3322
Cardigan Mountain School Photo
Gr: 6-9
All-boys
62 Alumni Drive
Canaan, NH 03741
(603) 523-3548
(2)
Fork Union Military Academy Photo - The cadets in parade formation. The first full dress parade of the year begins usually at the end of April and is on Sunday.
Gr: 7-12, PG
All-boys (Baptist General Association of Virginia)
PO Box 278, 4744 James Madison Hwy
Fork Union, VA 23055
(434) 842-4205
(6)
Hillside School Photo
#9(T9–T23)Hillside School
Gr: 4-9
All-boys
404 Robin Hill Street
Marlborough, MA 01752
(508) 485-3483
Riverside Military Academy Photo
Gr: 6-12
All-boys
2001 Riverside Drive
Gainesville, GA 30501
(877) 692-2338
(5)
Salisbury School Photo - Salisbury School
#9(T9–T23)Salisbury School
Gr: 9-12, PG
All-boys (Episcopalian)
251 Canaan Road
Salisbury, CT 06068
(860) 435-5732
(2)
Camp Hill, AL
Gr: 6-12
All-boys (non-denominational)
174 Ward Circle
Camp Hill, AL 36850
(256) 790-9202
(3)
Trinity-Pawling School Photo - The next-generation school for boys is here, on a campus that feels warm and welcoming and human-scaled, in an academic community that thinks ahead, looks forward, and gets transformational results.
Gr: 8-12, PG | 7-12, PG (day)
All-boys (Episcopal)
700 Route 22
Pawling, NY 12564
(845) 855-4825
(1)
Mount Michael Benedictine School Photo
Gr: 9-12
All-boys (Catholic)
22520 Mount Michael Road
Elkhorn, NE 68022
(402) 238-1457
McCallie School Photo - The College Counseling office works with our students to help them find the best college fit for them and to make sure they are best prepared for the application and the financial aid processes.
#19(T19–T26)McCallie School
Gr: 9-12, PG | 6-12, PG (day)
All-boys (Christian)
500 Dodds Avenue
Chattanooga, TN 37404
(423) 624-8300
(3)
Missouri Military Academy Photo - Established in 1889, Missouri Military Academy has transformed young men into leaders who are well-educated, prepared gentlemen of character. Our long history and distinct traditions inspire a sense of pride and duty among the young men who seek to fulfill their potential at MMA.
Gr: 7-12, PG
All-boys (Non-denom. / Christian)
204 Grand Street
Mexico, MO 65265
(573) 581-1776
(6)
Army and Navy Academy Photo
#21(T21–T29)Army and Navy Academy
Gr: 7-12
All-boys (secular)
2605 Carlsbad Blvd.
Carlsbad, CA 92008
(888) 762-2338
(4)
Camden Military Academy Photo - A proud family!
Gr: 7-12, PG
All-boys (non-sectarian)
520 Hwy. 1 North
Camden, SC 29020
(803) 432-6001
(18)
Subiaco Academy Photo
#21(T21–T29)Subiaco Academy
Gr: 7-12
All-boys (Catholic)
405 North Subiaco Avenue
Subiaco, AR 72865
(479) 934-1000
(1)
Georgetown Preparatory School Photo - Georgetown Prep`s excellent faculty includes 62 instructors. With an average tenure of 13 years at Prep, the faculty ranges from veterans with more than 50 years of service to those beginning their teaching careers. Of the 62 full-time instructors, 86% hold an advanced degree.
Gr: 9-12
All-boys (Catholic)
10900 Rockville Pike
North Bethesda, MD 20852
(301) 214-1215
(3)
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.
Gr: 6-12
All-boys (Catholic)
425 South Lindbergh Blvd.
St. Louis, MO 63131
(314) 692-6645
St. George's School, Vancouver Photo - St. George's School, Vancouver is an all-boys university preparatory school in Canada. The school offers a Canadian curriculum containing 100+ courses and 26 Advanced Placement subjects.
Gr: 8-12 | K-12 (day)
All-boys (Anglican tradition)
4175 West 29th Avenue
Vancouver, BC, Canada V6S1V1
(604) 221-3890
Saint Stanislaus High School Photo - We make the most of our location right on the Bay, developing unique programs, clubs, and activities for our students to enjoy. Our scuba and sailing clubs enjoy time in the water, while our environmental club focuses on care for our oceans, too.
Gr: 7-12
All-boys (Catholic)
304 S. Beach Blvd.
Bay St. Louis, MS 39520
(228) 467-9057

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