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-Boys 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-Boys Schools (out of 38 schools)

Sorted by range (alphabetically within range)
  • Boarding School # Students Grades Location
  • 1.Rank: #1
    3
    Grades: 9-12
    58 Harrison Lane
    BethlehemCT 06751
    (203)266-7788
  • 2.-3.Rank: #2-3
    4
    Grades: 6-12
    14 Greenwood Lane
    PutneyVT 05346
    (802)387-4545
  • 2.-3.Rank: #2-3
    4

    Grades: 3-12
    28 Patey Circle
    RindgeNH 03461
    (603)899-3325
  • 4.Rank: #4
    6
    Grades: 9-12, PG
    3042 College St.
    AustinburgOH 44010
    (440)275-2811
  • 5.Rank: #5
    The Phelps School
    The Phelps School Photo - There is strong school spirit at Phelps. Many boys participate in various sports, playing in the Tri County Independent School League.
    All-Boys 
    7
    Grades: 6-12, PG
    583 Sugartown Road
    MalvernPA 19355
    (610)644-1754
  • 6.Rank: #6
    St. Thomas More School
    St. Thomas More School Photo
    All-Boys  (Catholic)
    8
    Grades: 8-12, PG
    45 Cottage Road
    OakdaleCT 06370
    (860)823-3861
  • 7.-8.Rank: #7-8
    Blue Ridge School
    Blue Ridge School Photo - Our lake offers students a chance to relax, fish, canoe - in the center of campus.
    All-Boys  (Episcopal)
    9
    Grades: 9-12
    273 Mayo Drive
    St. GeorgeVA 22935
    (434)985-2811
  • 7.-8.Rank: #7-8
    9

    Grades: 9-12
    241 Woodberry Station
    Woodberry ForestVA 22989
    (888)798-9371
  • 9.-11.Rank: #9-11
    Eaglebrook School
    Eaglebrook School Photo - Eaglebrook School teaches middle school boys the skills they will need for the rest of their lives. Learn more about our Core Skills at https://www.eaglebrook.org/coreskills.
    All-Boys 
    10
    Grades: 6-9
    271 Pine Nook Road, P.O. Box 7
    DeerfieldMA 01342
    (413)774-9111
  • 9.-11.Rank: #9-11
    10

    Grades: 7-12
    225 S. Wayne Avenue
    WaynesboroVA 22980
    (540)946-7706
  • 9.-11.Rank: #9-11
    Hargrave Military Academy
    Hargrave Military Academy Photo - Respect! Integrity! Success! Earn it at Hargrave!
    All-Boys  (Baptist)
    10

    Grades: 7-12, PG
    200 Military Drive
    ChathamVA 24531
    (800)432-2480
  • 12.-15.Rank: #12-15
    11
    Grades: 9-12, PG
    500 Old Farms Road
    AvonCT 06001
    (800)464-2866
  • 12.-15.Rank: #12-15
    Christ School
    Christ School Photo
    All-Boys  (Episcopal)
    11

    Grades: 8-12
    500 Christ School Road
    AshevilleNC 28704
    (828)684-6232
  • 12.-15.Rank: #12-15
    11

    Grades: 7-12, PG
    320 Iwo Jima Blvd
    HarlingenTX 78550
  • 12.-15.Rank: #12-15
    11

    Grades: 7-12
    1001 Eagle Road
    WaynePA 19087
    (610)989-1200
  • 16.-24.Rank: #16-24
    Bridgton Academy
    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.
    All-Boys 
    12
    Grades: 11-12, PG
    PO Box 292
    North BridgtonME 04057
    (207)647-3322
  • 16.-24.Rank: #16-24
    12

    Grades: 7-12, PG
    520 Hwy. 1 North
    CamdenSC 29020
    (800)948-6291
  • 16.-24.Rank: #16-24
    12

    Grades: 6-9
    62 Alumni Drive
    CanaanNH 03741
    (603)523-3548
  • 16.-24.Rank: #16-24
    Fork Union Military Academy
    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.
    All-Boys  (Baptist)
    12

    Grades: 7-12, PG
    P.O. 278, 4744 James Madison Hwy
    Fork UnionVA 23055
    (800)462-3862
  • 16.-24.Rank: #16-24
    Hillside School
    Hillside School Photo
    All-Boys 
    12

    Grades: 4-9
    404 Robin Hill Street
    MarlboroughMA 01752
    (508)485-3483
  • 16.-24.Rank: #16-24
    12

    Grades: 7-12
    2001 Riverside Drive
    GainesvilleGA 30501
    (800)462-2338
  • 16.-24.Rank: #16-24
    Salisbury School
    Salisbury School Photo - Salisbury School
    All-Boys 
    12

    Grades: 9-12, PG
    251 Canaan Road
    SalisburyCT 06068
    (860)435-5732
  • 16.-24.Rank: #16-24
    12

    Grades: 6-12
    174 Ward Circle
    Camp HillAL 36850
    (256)675-6260
  • 16.-24.Rank: #16-24
    Trinity-Pawling School
    Trinity-Pawling School Photo - Find your home away from home on our stunning 230-acre campus. We're a buzzing community, with 8 dorms, state-of-the-art athletic facilities, a chapel, and an Arts Center with a theater and painting studios. Zip into New York City by train for cultural activities, or enjoy the great outdoors just minutes from campus.
    All-Boys  (Episcopal)
    12

    Grades: 8-12, PG | 7-12, PG (day)
    700 Route 22
    PawlingNY 12564
    (845)855-4825
  • 25.Rank: #25
    The Kiski School
    The Kiski School Photo - Kiski's Science, Technology, Engineering, Arts, and Math (STEAM) class.
    All-Boys 
    13
    Grades: 9-12, PG
    1888 Brett Lane
    SaltsburgPA 15681
    (724)639-8035
  • 26.-28.Rank: #26-28
    McCallie School
    McCallie School Photo - Current students and alumni will tell you that a single-sex academic environment makes classes at McCallie more dynamic, honest, and productive.
    All-Boys 
    14
    Grades: 9-12, PG | 6-12, PG (day)
    500 Dodds Avenue
    ChattanoogaTN 37404
    (800)234-2163
  • 26.-28.Rank: #26-28
    14

    Grades: 7-12, PG
    204 Grand Street
    MexicoMO 65265
    (573)581-1776
  • 26.-28.Rank: #26-28
    Mount Michael Benedictine School
    Mount Michael Benedictine School Photo
    All-Boys  (Catholic)
    14

    Grades: 9-12
    22520 Mount Michael Road
    ElkhornNE 68022
    (402)238-1457
  • 29.-32.Rank: #29-32
    15
    Grades: 7-12
    2605 Carlsbad Blvd.
    CarlsbadCA 92008
    (888)762-2338
  • 29.-32.Rank: #29-32
    15

    Grades: 5-12
    6727 South Chippawa Rd
    Wellandport, OntarioCanada 12345
    (905)386-6203
  • 29.-32.Rank: #29-32
    St. Catherine's Academy
    St. Catherine's Academy Photo - Our outstanding music department provides classroom instruction in music theory, music history, and musical experiences. Students are also welcome to play in the marching band and take private piano or guitar lessons.
    All-Boys  (Catholic)
    15

    Grades: 4-8 | K-8 (day)
    215 N. Harbor Blvd.
    AnaheimCA 92805
    (714)772-1363
  • 29.-32.Rank: #29-32
    Subiaco Academy
    Subiaco Academy Photo - Subiaco Students with Father Cassian
    All-Boys  (Catholic)
    15

    Grades: 7-12
    405 North Subiaco Avenue
    SubiacoAR 72865
    (479)934-1034
  • 33.-38.Rank: #33-38
    Georgetown Preparatory School
    Georgetown Preparatory School Photo - Average class size is 16. Student to teacher ratio is 8:1. Boarding Faculty to Student Ratio is 1:5
    All-Boys  (Catholic)
    >15
    Grades: 9-12
    10900 Rockville Pike
    North BethesdaMD 20852
    (301)214-1215
  • 33.-38.Rank: #33-38
    >15

    Grades: 9-12
    3535 Commerce Rd.
    Orchard LakeMI 48324
    (248)683-0517
  • 33.-38.Rank: #33-38
    >15

    Grades: 6-12
    425 South Lindbergh Blvd.
    St. LouisMO 63131
    (314)692-6640
  • 33.-38.Rank: #33-38
    St. Francis High School
    St. Francis High School Photo - Friars' Hall
    All-Boys  (Catholic)
    >15

    Grades: 9-12
    4129 Lake Shore Road
    HamburgNY 14075
    (716)627-1200
  • 33.-38.Rank: #33-38
    >15

    Grades: 8-12 | 1-12 (day)
    4175 West 29th Avenue
    Vancouver, BCCanada 00001
    (604)221-3915
  • 33.-38.Rank: #33-38
    Saint Stanislaus High School
    Saint Stanislaus High School Photo - Mr. Anderson's chemistry class gets to perform cool experiments!
    All-Boys  (Catholic)
    >15

    Grades: 7-12
    304 S. Beach Blvd.
    Bay St. LouisMS 39520
    (228)467-9057

Top School Listings by Category (2020)

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