Smallest Average Class Size

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All Schools 
400+ students
400+ students 
200-400 students
200-400 students 
< 200 students
< 200 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
    (203)266-7788
  • 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
    (440)275-2811
  • 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.-40.
    8
    Grades: 7-12
    PO Box 388
    BalsamNC 28707
    (828)456-3435
  • 17.-40.
    Academy of the Holy Family
    Academy of the Holy Family Photo - Boarding students weekend trip to Boston
    All-Girls  (Catholic)
    8

    Grades: 9-12
    54 W. Main Street Box 691
    BalticCT 06330
    (860)822-6279
  • 17.-40.
    8

    Grades: 9-12, PG
    345 South Figueroa Street
    Los AngelesCA 90071
    (213)400-4585
  • 17.-40.
    8

    Grades: 6-12
    1701 Brandon Hall Drive
    AtlantaGA 30350
    (770)394-8177
  • 17.-40.
    8

    Grades: 9-12
    Slovenska 477/5
    Karlovy VaryCzech Republic 36001
    00420353227387
  • 17.-40.
    Chatham Hall
    Chatham Hall Photo - Our traditions are a vital force: They bridge the generations, bond new students with old, and help us continually build our community. Best of all, they're a lot of fun (and they help make Chatham Hall the unique place it is).
    All-Girls  (Episcopal)
    8

    Grades: 9-12
    800 Chatham Hall Circle
    ChathamVA 24531
    (434)432-5516
  • 17.-40.
    8

    Grades: 8-12, PG
    Dorfstrasse
    6085 Hasliberg GoldernSwitzerland 6085
    14019968682
  • 17.-40.
    8

    Grades: 6-12, PG
    280 King Street East
    BrockvilleCanada K6V1E2
    (613)341-9330
  • 17.-40.
    8

    Grades: 7-12
    5755 North State Road 9/P.O. Box 240
    HoweIN 46746
    (888)462-4693
  • 17.-40.
    8

    Grades: 9-12 | 2-12 (day)
    P.O. Box 227
    Prides CrossingMA 01965
    (978)236-3000
  • 17.-40.
    8

    Grades: 6-12, PG
    614 South Main Street
    WoodstockVA 22664
    (540)459-2167
  • 17.-40.
    8

    Grades: 4-9
    4382 Cascade Road
    Lake PlacidNY 12946
    (518)523-9329
  • 17.-40.
    8

    Grades: 9-12, PG
    W10085 Pike Plains Road
    DunbarWI 54119
    (715)324-6900
  • 17.-40.
    Oldfields School
    Oldfields School Photo - ATHLETICS* Competitive interscholastic athletic teams * Extra-curricular activities offered such as Pilates, yoga, fitness, and sailing* Riding, Theater, and Dance offered each season * Inspiring coaches with NCAA Division I, II, and II experience(PICTURE: Runners from the 2014 IAAM Cross-Country Championship team)
    All-Girls 
    8

    Grades: 8-12, PG
    1500 Glencoe Road
    Sparks GlencoeMD 21152
    (410)472-4800
  • 17.-40.
    8

    Grades: 8-12, PG
    1000 Orme School Road, H.C. 63, Box 3040
    MayerAZ 86333
    (928)632-7601
  • 17.-40.
    8

    Grades: 9-12, PG
    1 Rock Point Road
    BurlingtonVT 05408
    (802)863-1104
  • 17.-40.
    8

    Grades: 9-12, PG | 6-12, PG (day)
    63 Federal Road
    BarringtonRI 02806
    (401)246-1230
  • 17.-40.
    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.-40.
    8

    Grades: 9-12, PG
    1951 Delta Avenue
    West BranchIA 52358
    (319)519-1856
  • 17.-40.
    8

    Grades: 6-12, PG
    1 Ames Hill Drive
    SpringfieldMA 01105
    (413)285-8976
  • 17.-40.
    8

    Grades: 9-12, PG
    235 Squaw Valley Road | P.O. Box 2667
    Olympic ValleyCA 96146
    (530)583-9393
  • 17.-40.
    8

    Grades: 9-12, PG
    42605 RCR 36
    Steamboat SpringsCO 80487
    (970)879-1350
  • 17.-40.
    8

    Grades: 6-9
    253 Bushy Hill Road
    IvorytonCT 06442
    (860)767-0848
  • 17.-40.
    8

    Grades: 6-12
    22000 Hwy 27
    Lake WalesFL 33859
    (863)676-6091
  • 41.-54.
    Blue Ridge School
    Blue Ridge School Photo - We offer 20 competitive team sports at the squire, junior varsity and varsity levels.
    All-Boys  (Episcopal)
    9
    Grades: 9-12
    273 Mayo Drive
    St. GeorgeVA 22935
    (434)985-2811
  • 41.-54.
    9

    Grades: 9-12
    291 South Street
    WilliamstownMA 01267
    (413)458-3919
  • 41.-54.
    9

    Grades: 9-12
    1 High Street
    ChestertonUnited Kingdom CB4 1NQ
    01223314431
  • 41.-54.
    9

    Grades: 9-12, PG
    110 Darrow Road
    New LebanonNY 12125
    (518)794-6006
  • 41.-54.
    9

    Grades: 9-12, PG
    12 Norfolk Road, P.O. Box 80
    LitchfieldCT 06759
    (860)567-1802
  • 41.-54.
    Grier School
    Grier School Photo
    All-Girls 
    9

    Grades: 7-12, PG
    2522 Grier School Road
    TyronePA 16686
    (814)684-3000
  • 41.-54.
    Hoosac School
    Hoosac School Photo - Hoosac prides itself on diversity in all aspects of school life. This year 9 different countries and 11 different states are represented in our student body. As well as a diverse American cultures.
    (Episcopal)
    9

    Grades: 8-12, PG
    PO Box 9
    HoosickNY 12089
    (518)686-7331
  • 41.-54.
    9

    Grades: 8-12, PG
    1000 Samuel Miller Loop
    CharlottesvilleVA 22903
    (434)823-4805
  • 41.-54.
    Purnell School
    Purnell School Photo - Girls hanging out in a dorm room during a break.
    All-Girls 
    9

    Grades: 9-12, PG
    51 Pottersville Road, P.O. Box 500
    PottersvilleNJ 07979
    (908)439-4009
  • 41.-54.
    St. Timothy's School
    St. Timothy's School Photo - St. Timothy's Dance program offers students the opportunity to explore and continue their progress in a variety of dance techniques, from ballet to tap to modern, regardless of skill level.
    All-Girls  (Episcopal)
    9

    Grades: 9-12, PG
    8400 Greenspring Avenue
    StevensonMD 21153
    (410)486-7401
  • 41.-54.
    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
  • 41.-54.
    9

    Grades: 6-12, PG
    2800 Monterey Road
    San MarinoCA 91108
  • 41.-54.
    9

    Grades: 7-12, PG
    574 Bernardston Road
    GreenfieldMA 01301
    (413)774-2711
  • 41.-54.
    9

    Grades: 9-12
    241 Woodberry Station
    Woodberry ForestVA 22989
    (888)798-9371
  • 55.-91.
    10
    Grades: 9-12, PG
    4334 Hobbs Road
    GreensboroNC 27410
    (336)217-7070
  • 55.-91.
    10

    Grades: 9-12, PG
    8585 Ojai Santa Paula Road
    OjaiCA 93023
    (805)646-4343
  • 55.-91.
    10

    Grades: 9-12
    1960 Cate Mesa Road, P.O. Box 5005
    CarpinteriaCA 93013
    (805)684-4127
  • 55.-91.
    10

    Grades: 9-12, PG
    43-45 Bloomsbury Square
    LondonUnited Kingdom CB1 2JH
    2078411580
  • 55.-91.
    10

    Grades: 9-12, PG
    785 Beaver Street
    WalthamMA 02452
    (781)314-0806
  • 55.-91.
    10

    Grades: 9-12
    18 Lehmann Way, PO Box 522
    DublinNH 03444
    (603)563-7075
  • 55.-91.
    10

    Grades: 8-12 | 6-12 (day)
    P.O. Box 98, 2555 W. Highway 154
    Los OlivosCA 93441
    (800)287-9197
  • 55.-91.
    10

    Grades: 6-9
    271 Pine Nook Road, P.O. Box 7
    DeerfieldMA 01342
    (413)774-9111
  • 55.-91.
    10

    Grades: 7-12
    225 S. Wayne Avenue
    WaynesboroVA 22980
    (800)946-7773
  • 55.-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
  • 55.-91.
    10

    Grades: 9-12, PG
    118 Main Street East, Merrickville, Ontario
    MerrickvilleCanada K0G1N
    (613)269-2064
  • 55.-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
  • 55.-91.
    10

    Grades: 9-12 | Pre-K-12 (day)
    222 Isaac Frye Highway
    WiltonNH 03086
    (603)654-2391
  • 55.-91.
    10

    Grades: 6-9 | Pre-K-9 (day)
    211 Indian Mountain Road
    LakevilleCT 06039
    (435)480-0871
  • 55.-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
    (219)326-7450
  • 55.-91.
    Linden Hall School
    Linden Hall School Photo
    All-Girls 
    10

    Grades: 6-12, PG
    212 East Main Street
    LititzPA 17543
    (717)626-8512
  • 55.-91.
    10

    Grades: 9-12
    294 Lustre Road
    LustreMT 59225
    (406)392-5735
  • 55.-91.
    10

    Grades: 9-12, PG
    476 Skiff Mountain Road
    KentCT 06757
    (860)927-0047
  • 55.-91.
    10

    Grades: 9-12
    PO Box 8
    Los OlivosCA 93441
    (805)688-5114
  • 55.-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
  • 55.-91.
    10

    Grades: 9-12
    60 Main Street
    FarmingtonCT 06032
    (860)409-3530
  • 55.-91.
    10

    Grades: 8-12, PG
    78 Academy Avenue
    Cornwall-on-HudsonNY 12520
    (845)534-3710
  • 55.-91.
    10

    Grades: 9-12
    1500 Port Arthur Road
    LadysmithWI 54848
    (715)532-0201
  • 55.-91.
    10

    Grades: 9-12, PG
    92 Northwood Road
    Lake PlacidNY 12946
    (518)523-3382
  • 55.-91.
    Oak Hill Academy
    (Baptist)
    10

    Grades: 8-12
    2635 Oak Hill Road
    Mouth of WilsonVA 24363
    (276)579-2619
  • 55.-91.
    10

    Grades: 5-9 | Pre-K-9 (day)
    P.O. Box 68 528 Pomfret Street
    PomfretCT 06258
    (860)928-1328
  • 55.-91.
    St. George's School
    St. George's School Photo - Our 125-acre campus is on a hilltop overlooking the ocean.
    (Episcopal)
    10

    Grades: 9-12
    P.O. Box 1910
    NewportRI 02840
    (401)842-6600
  • 55.-91.
    St. Margaret's School
    St. Margaret's School Photo - BELIEVE IN THE DIFFERENCE YOU CAN MAKE. * We respect the dignity of all people and promote compassion, forgiveness, and generosity.* Social responsibility is an important part of our purpose and inspires our students to serve others as Chapel leaders, on our Honor Council, as Student Government leaders, and by volunteering in our local community and around the world.
    All-Girls  (Episcopal)
    10

    Grades: 8-12, PG
    PO Box 158, 444 Water Lane
    TappahannockVA 22560
    (804)443-3357
  • 55.-91.
    10

    Grades: 9-12
    84 Blue Ridge Circle
    Black MountainNC 28711
    (828)606-7518
  • 55.-91.
    10

    Grades: 9-12
    6832 Phillips Mill Road
    New HopePA 18938
    (215)862-5261
  • 55.-91.
    10

    Grades: 8-12, PG
    314 Mountain Road
    Cornwall on HudsonNY 12520
    (845)458-7542
  • 55.-91.
    Stuart Hall School
    Stuart Hall School Photo - Fine Arts Emphasis at Stuart Hall School allows students to discover their passion and sends students to prestigious arts programs in the areas of Music, Visual Art, and Theatre every year.
    (Episcopal)
    10

    Grades: 8-12 | Pre-K-12 (day)
    235 West Frederick Street
    StauntonVA 24401
    (540)213-3746
  • 55.-91.
    10

    Grades: 9-12, PG
    Suffield Academy
    SuffieldCT 06078
    (860)386-4440
  • 55.-91.
    testing123
    testing123 Photo - testing this functionality
    All-Boys  (Jewish)
    10

    Grades: 1-7 | 1-10 (day)
    555 Alton Dr.
    testCanada 11111
    (785)687-5765
  • 55.-91.
    10

    Grades: 9-12, PG
    10 Long Walk
    Saxtons RiverVT 05154
    (802)869-6229
  • 55.-91.
    10

    Grades: 7-12 | 6-12 (day)
    319 Webb Road East
    Bell BuckleTN 37020
    (931)389-6003
  • 55.-91.
    10

    Grades: 9-12, PG
    371 West Farm Road
    BethlehemNH 03574
    (603)444-2928
  • 92.-111.
    11
    Grades: 9-12, PG
    80 Academy Drive
    WolfeboroNH 03894
    (603)569-7200
  • 92.-111.
    Buffalo Seminary
    Buffalo Seminary Photo - Individualized college counseling helps each student explore options that are right for her.
    All-Girls 
    11

    Grades: 9-12, PG
    205 Bidwell Parkway
    BuffaloNY 14222
    (716)885-6780
  • 92.-111.
    Canterbury School
    Canterbury School Photo - Canterbury swimmers practice in the William W. Higgins ’53 Aquatic Center, an eight-lane, 25-yard competitive swim and dive pool. Dedicated in 2008, it is the finest swimming, diving, and water polo venue in New England.
    (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
    (828)684-6232
  • 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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