Smallest Average Class Size

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200-400 students 
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  • Among "All Schools", view the boarding schools with the smallest average class sizes (2018-19).
  • 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 (2018-19)

Sorted by range (alphabetically within range)
  • Boarding School # Students Grades Location
  • 1.
    3
    Grades: 9-12
    58 Harrison Lane
    BethlehemCT 06751
    2032667788
  • 2.-3.
    4
    Grades: 6-12
    14 Greenwood Lane
    PutneyVT 05346
    802-387-4545
  • 2.-3.
    4

    Grades: 3-12
    28 Patey Circle
    RindgeNH 03461
    603-899-3325
  • 4.-7.
    5
    Grades: 5-12, PG | Pre-K-12, PG (day)
    54-230 Kamehameha Hwy
    HauulaHI 96717
    808-670-1909
  • 4.-7.
    5

    Grades: 1-8
    128 Oakland Farm Way
    TroyVA 22974
    434-293-9059
  • 4.-7.
    5

    Grades: 6-12 | Pre-K-12 (day)
    PO Box 3050, 198 Main St.
    Chester/Lake AlmanorCA 96020
    530-596-3343
  • 4.-7.
    5

    Grades: 6-12, PG
    93 Camp School Road
    WolfeboroNH 03894
    603-569-3451
  • 8.-12.
    6
    Grades: 9-12, PG
    454 Academy Drive
    DurangoCO 81301
    970-247-5898
  • 8.-12.
    6

    Grades: 8-12
    P.O. Box 116 , 242 Old Petersham Road
    HardwickMA 01037
    413-477-6000
  • 8.-12.
    6

    Grades: 8-12, PG
    3042 College St.
    AustinburgOH 44010
    4402752811
  • 8.-12.
    6

    Grades: 7-12, PG
    333 Ocean Road
    NarragansettRI 02882
    401-788-0800
  • 8.-12.
    6

    Grades: 5-12, PG
    500 Main Street
    New WindsorMD 21776
    855-405-8600
  • 13.-16.
    7
    Grades: K-12 | Pre-K-12 (day)
    3846 N. Hwy. 144
    GranburyTX 76048
    254.897.4822
  • 13.-16.
    Olney Friends School
    Olney Friends School Photo - The view of top campus from Livezey Lake. Olney Friends School sits on a 350-acre USDA certified organic campus.
    (Society of Friends)
    7

    Grades: 9-12
    61830 Sandy Ridge Road
    BarnesvilleOH 43713
    740-425-3655
  • 13.-16.
    7

    Grades: 6-12, PG
    583 Sugartown Road
    MalvernPA 19355
    610-644-1754
  • 13.-16.
    7

    Grades: 9-12, PG
    172 Ash Street
    WinchendonMA 01475
    978-297-4476
  • 17.-41.
    8
    Grades: 7-12
    PO Box 388
    BalsamNC 28707
    8284563435
  • 17.-41.
    Academy of the Holy Family
    Academy of the Holy Family Photo - Celebrating AHF's 142nd Birthday!
    All-Girls  (Catholic)
    8

    Grades: 9-12
    54 W. Main Street Box 691
    BalticCT 06330
    860-822-6279
  • 17.-41.
    8

    Grades: 9-12, PG
    345 South Figueroa Street
    Los AngelesCA 90071
    213-400-4585
  • 17.-41.
    8

    Grades: 6-12
    1701 Brandon Hall Drive
    AtlantaGA 30350
    770-394-8177
  • 17.-41.
    8

    Grades: 9-12
    Slovenska 477/5
    Karlovy VaryCzech Republic 36001
    00420353227387
  • 17.-41.
    Chatham Hall
    Chatham Hall Photo - Chatham Hall's variety of dynamic and unique programming includes the prestigious Leader in Residence Program which brings world leaders and global thinkers to campus to meet with students. Past guests include BBC Anchor Katty Kay Nobel Prize winner Liberian President Ellen Johnson Sirleaf, Jane Goodall, Alvin Ailey Artistic Director Judith Jameson, the late Benazir Bhutto, Gloria Steinem, and Venus Williams.
    All-Girls  (Episcopal)
    8

    Grades: 9-12
    800 Chatham Hall Circle
    ChathamVA 24531
    434-432-5516
  • 17.-41.
    8

    Grades: 8-12, PG
    Dorfstrasse
    6085 Hasliberg GoldernSwitzerland 6085
    1-401-996-8682
  • 17.-41.
    8

    Grades: 6-12, PG
    280 King Street East
    BrockvilleCanada K6V1E2
    16133419330
  • 17.-41.
    8

    Grades: 7-12
    5755 North State Road 9/P.O. Box 240
    HoweIN 46746
    888-462-4693
  • 17.-41.
    8

    Grades: 6-12, PG | 2-12, PG (day)
    425 Morse Hill Rd.
    AmeniaNY 12501
    845-373-2012
  • 17.-41.
    8

    Grades: 9-12 | 2-12 (day)
    P.O. Box 227
    Prides CrossingMA 01965
    978-236-3000
  • 17.-41.
    8

    Grades: 6-12, PG
    614 South Main Street
    WoodstockVA 22664
    5404592167
  • 17.-41.
    8

    Grades: 4-9
    4382 Cascade Road
    Lake PlacidNY 12946
    518-523-9329
  • 17.-41.
    8

    Grades: 9-12, PG
    W10085 Pike Plains Road
    DunbarWI 54119
    7153246900
  • 17.-41.
    Oldfields School
    Oldfields School Photo - CAMPUS* 130 acres* Located just 20 miles from Baltimore* 30 minutes from BWI* 1 hour from Washington, DC* 90 minutes from Philadelphia* 40 minutes from Annapolis* 3 hours from New York City(PICTURE: Birds eye view of campus)
    All-Girls 
    8

    Grades: 8-12, PG
    1500 Glencoe Road
    Sparks GlencoeMD 21152
    410-472-4800
  • 17.-41.
    8

    Grades: 8-12, PG
    1000 Orme School Road, H.C. 63, Box 3040
    MayerAZ 86333
    928-632-7601
  • 17.-41.
    8

    Grades: 9-12, PG
    1 Rock Point Road
    BurlingtonVT 05408
    8028631104
  • 17.-41.
    8

    Grades: 9-12, PG | 6-12, PG (day)
    63 Federal Road
    BarringtonRI 02806
    401-246-1230
  • 17.-41.
    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
  • 17.-41.
    8

    Grades: 9-12, PG
    1951 Delta Avenue
    West BranchIA 52358
    1-319-519-1856
  • 17.-41.
    8

    Grades: 6-12, PG
    1 Ames Hill Drive
    SpringfieldMA 01105
    4132858976
  • 17.-41.
    8

    Grades: 9-12, PG
    235 Squaw Valley Road | P.O. Box 2667
    Olympic ValleyCA 96146
    530-583-9393
  • 17.-41.
    8

    Grades: 9-12, PG
    42605 RCR 36
    Steamboat SpringsCO 80487
    970-879-1350
  • 17.-41.
    8

    Grades: 6-9
    253 Bushy Hill Road
    IvorytonCT 06442
    860-767-0848
  • 17.-41.
    8

    Grades: 6-12
    22000 Hwy 27
    Lake WalesFL 33859
    863-676-6091
  • 42.-55.
    Blue Ridge School
    Blue Ridge School Photo - Class sizes are small and teachers really get to know their students and his learning style.
    All-Boys  (Episcopal)
    9
    Grades: 9-12
    273 Mayo Drive
    St. GeorgeVA 22935
    434-985-2811
  • 42.-55.
    9

    Grades: 9-12
    291 South Street
    WilliamstownMA 01267
    413-458-3919
  • 42.-55.
    9

    Grades: 9-12
    1 High Street
    ChestertonUnited Kingdom CB4 1NQ
    01223-314-431
  • 42.-55.
    9

    Grades: 9-12, PG
    110 Darrow Road
    New LebanonNY 12125
    518-794-6006
  • 42.-55.
    9

    Grades: 9-12, PG
    12 Norfolk Road, P.O. Box 80
    LitchfieldCT 06759
    860-567-1802
  • 42.-55.
    Grier School
    Grier School Photo
    All-Girls 
    9

    Grades: 7-12, PG
    2522 Grier School Road
    TyronePA 16686
    814-684-3000
  • 42.-55.
    Hoosac School
    Hoosac School Photo - Athletics are an important part of any school. Hoosac offers many opportunities for students to have success. Hoosac Boys Basketball is two-time defending New England Champions. Our student-athletes are recruited by all levels of college coaches.
    (Episcopal)
    9

    Grades: 8-12, PG
    PO Box 9
    HoosickNY 12089
    518-686-7331
  • 42.-55.
    9

    Grades: 8-12, PG
    1000 Samuel Miller Loop
    CharlottesvilleVA 22903
    434-823-4805
  • 42.-55.
    Purnell School
    Purnell School Photo - Twelfth grade student working on a mural in the Johnson Art Center.
    All-Girls 
    9

    Grades: 9-12, PG
    51 Pottersville Road, P.O. Box 500
    PottersvilleNJ 07979
    908-439-4009
  • 42.-55.
    St. Timothy's School
    St. Timothy's School Photo - A St. Timothy's education reflects the increasingly globalized, interconnected society in which we live, giving students a world perspective in mathematics, the sciences, social sciences, languages, literature, technology and the arts.
    All-Girls  (Episcopal)
    9

    Grades: 9-12, PG
    8400 Greenspring Avenue
    StevensonMD 21153
    410-486-7401
  • 42.-55.
    South Kent School
    South Kent School Photo - Since its founding in 1923, South Kent School has provided its students with the intellectual, moral, physical and social framework for scholastic achievement in college and productive citizenship in adult society.
    All-Boys  (Episcopal)
    9

    Grades: 9-12, PG
    40 Bulls Bridge Road
    South KentCT 06785
    860-927-3539
  • 42.-55.
    9

    Grades: 6-12, PG
    2800 Monterey Road
    San MarinoCA 91108
  • 42.-55.
    9

    Grades: 7-12, PG
    574 Bernardston Road
    GreenfieldMA 01301
    413-774-2711
  • 42.-55.
    9

    Grades: 9-12
    241 Woodberry Station
    Woodberry ForestVA 22989
    888-798-9371
  • 56.-91.
    10
    Grades: 9-12, PG
    4334 Hobbs Road
    GreensboroNC 27410
    336-217-7070
  • 56.-91.
    10

    Grades: 9-12, PG
    8585 Ojai Santa Paula Road
    OjaiCA 93023
    805-646-4343
  • 56.-91.
    10

    Grades: 9-12
    1960 Cate Mesa Road, P.O. Box 5005
    CarpinteriaCA 93013
    8056844127
  • 56.-91.
    10

    Grades: 9-12, PG
    43-45 Bloomsbury Square
    LondonUnited Kingdom CB1 2JH
    2078411580
  • 56.-91.
    10

    Grades: 9-12, PG
    785 Beaver Street
    WalthamMA 02452
    781-314-0806
  • 56.-91.
    10

    Grades: 9-12
    18 Lehmann Way, PO Box 522
    DublinNH 03444
    1-603-563-7075
  • 56.-91.
    10

    Grades: 8-12 | 6-12 (day)
    P.O. Box 98, 2555 W. Highway 154
    Los OlivosCA 93441
    800-287-9197
  • 56.-91.
    10

    Grades: 6-9
    271 Pine Nook Road, P.O. Box 7
    DeerfieldMA 01342
    413-774-9111
  • 56.-91.
    10

    Grades: 7-12
    225 S. Wayne Avenue
    WaynesboroVA 22980
    1-800-946-7773
  • 56.-91.
    Foxcroft School
    Foxcroft School Photo - Foxcroft School House
    All-Girls 
    10

    Grades: 9-12, PG
    P.O. Box 5555
    MiddleburgVA 20118
    540-687-4340
  • 56.-91.
    10

    Grades: 10-12, PG
    118 Main Street East, Merrickville, Ontario
    MerrickvilleCanada K0G1N
    6132692064
  • 56.-91.
    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
  • 56.-91.
    10

    Grades: 9-12 | Pre-K-12 (day)
    222 Isaac Frye Highway
    WiltonNH 03086
    6036542391
  • 56.-91.
    10

    Grades: 6-9 | Pre-K-9 (day)
    211 Indian Mountain Road
    LakevilleCT 06039
    435-480-0871
  • 56.-91.
    La Lumiere School
    La Lumiere School Photo - La Lumiere School is a private, independent boarding and day school founded in 1963, located in La Porte, Indiana, on an idyllic 190-acre wooded campus. Mission: At La Lumiere, we form character, cultivate scholarship, and explore faith in order to grow into more complete versions of ourselves.
    (Catholic)
    10

    Grades: 9-12, PG
    6801 N. Wilhelm Road
    La PorteIN 46350
    2193267450
  • 56.-91.
    Linden Hall School
    Linden Hall School Photo
    All-Girls 
    10

    Grades: 6-12, PG
    212 East Main Street
    LititzPA 17543
    717-626-8512
  • 56.-91.
    10

    Grades: 9-12
    294 Lustre Road
    LustreMT 59225
    406-392-5735
  • 56.-91.
    10

    Grades: 9-12, PG
    476 Skiff Mountain Road
    KentCT 06757
    860-927-0047
  • 56.-91.
    10

    Grades: 9-12
    PO Box 8
    Los OlivosCA 93441
    805-688-5114
  • 56.-91.
    Miss Hall's School
    Miss Hall's School Photo - At MHS we are committed to helping each girl to develop, test, comprehend, and act from her own spirit, core values, abilities, expertise, and judgment.
    All-Girls 
    10

    Grades: 9-12, PG
    492 Holmes Road, PO Box 1166
    PittsfieldMA 01201
    413-499-1300
  • 56.-91.
    10

    Grades: 9-12
    60 Main Street
    FarmingtonCT 06032
    8604093530
  • 56.-91.
    10

    Grades: 8-12, PG
    78 Academy Avenue
    Cornwall-on-HudsonNY 12520
    845-534-3710
  • 56.-91.
    10

    Grades: 9-12
    1500 Port Arthur Road
    LadysmithWI 54848
    715-532-0201
  • 56.-91.
    10

    Grades: 9-12, PG
    92 Northwood Road
    Lake PlacidNY 12946
    518-523-3382
  • 56.-91.
    Oak Hill Academy
    (Baptist)
    10

    Grades: 8-12
    2635 Oak Hill Road
    Mouth of WilsonVA 24363
    276-579-2619
  • 56.-91.
    10

    Grades: 5-9 | Pre-K-9 (day)
    P.O. Box 68 528 Pomfret Street
    PomfretCT 06258
    860-928-1328
  • 56.-91.
    St. George's School
    St. George's School Photo
    (Episcopal)
    10

    Grades: 9-12
    P.O. Box 1910
    NewportRI 02840
    401-842-6600
  • 56.-91.
    St. Margaret's School
    St. Margaret's School Photo - Believe in traditions.
    All-Girls  (Episcopal)
    10

    Grades: 8-12
    PO Box 158, 444 Water Lane
    TappahannockVA 22560
    804-443-3357
  • 56.-91.
    10

    Grades: 9-12
    84 Blue Ridge Circle
    Black MountainNC 28711
    828-606-7518
  • 56.-91.
    10

    Grades: 9-12
    6832 Phillips Mill Road
    New HopePA 18938
    215-862-5261
  • 56.-91.
    10

    Grades: 8-12, PG
    314 Mountain Road
    Cornwall on HudsonNY 12520
    845-458-7542
  • 56.-91.
    Stuart Hall School
    Stuart Hall School Photo - Students at Stuart Hall School come from all over the nation and the world. Our community is built on mutual trust and academic inquiry, and we seek to develop the personal character, honor, and creativity of each member of our school.
    (Episcopal)
    10

    Grades: 8-12 | Pre-K-12 (day)
    235 West Frederick Street
    StauntonVA 24401
    540-213-3746
  • 56.-91.
    10

    Grades: 9-12, PG
    Suffield Academy
    SuffieldCT 06078
    860-386-4440
  • 56.-91.
    10

    Grades: 9-12, PG
    10 Long Walk
    Saxtons RiverVT 05154
    8028696229
  • 56.-91.
    10

    Grades: 7-12 | 6-12 (day)
    319 Webb Road East
    Bell BuckleTN 37020
    931-389-6003
  • 56.-91.
    10

    Grades: 9-12, PG
    371 West Farm Road
    BethlehemNH 03574
    6034442928
  • 92.-111.
    11
    Grades: 9-12, PG
    80 Academy Drive
    WolfeboroNH 03894
    603-569-7200
  • 92.-111.
    Buffalo Seminary
    Buffalo Seminary Photo - SEM student-athletes have opportunities in winter to join teams in fencing, bowling and basketball. In spring we have tennis, lacrosse, sailing and crew. In the fall we offer crew, field hockey, soccer, sailing, swimming, cross country, and golf.
    All-Girls 
    11

    Grades: 9-12, PG
    205 Bidwell Parkway
    BuffaloNY 14222
    716-885-6780
  • 92.-111.
    Canterbury School
    Canterbury School Photo - Canterbury offers students many opportunities for community service. Each summer a group of students spend a week volunteering in Lourdes, France. Students have also volunteered in Nicaragua and Puerto Rico.
    (Catholic)
    11

    Grades: 9-12, PG
    101 Aspetuck Avenue
    New MilfordCT 06776
    (860)210-3832
  • 92.-111.
    Christ School
    Christ School Photo
    All-Boys  (Episcopal)
    11

    Grades: 8-12
    500 Christ School Road
    AshevilleNC 28704
    8286846232
  • 92.-111.
    11

    Grades: 9-12
    1200 N. Quaker Lane
    AlexandriaVA 22302
    877-933-4347
  • 92.-111.
    11

    Grades: 9-12, PG
    PO Box 860
    BethelME 04217
    207-824-7777
  • 92.-111.
    11

    Grades: 9-12
    1 Elm Street
    ByfieldMA 01922
    978-499-3120
  • 92.-111.
    11

    Grades: 9-12, PG
    PO Box 257, 1614 Main St., Rte. 17
    Kents HillME 04349
    207-685-1606
  • 92.-111.
    11

    Grades: 6-12
    66 School Street
    GranbyMA 01033
    413-255-0000
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