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 "Schools with < 200 Students", view the boarding schools with the smallest average class sizes (2021).
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 (2021)

Among Schools with < 200 Students (out of 94 schools)

Sorted by range (alphabetically within range)
  • Boarding School # Students Grades Location
  • 1.Rank: #1
    4
    Grades: 6-12
    14 Greenwood Lane
    PutneyVT 05346
    (802) 387-4545
  • 2.-3.Rank: #2-3
    5
    Grades: 5-12 | Pre-K-12 (day)
    PO Box 3050, 198 Main St.
    Chester/Lake AlmanorCA 96020
    (530) 596-3343
  • 2.-3.Rank: #2-3
    5

    Grades: 6-12, PG
    93 Camp School Road
    WolfeboroNH 03894
    (603) 569-3451
  • 4.-6.Rank: #4-6
    6
    Grades: 9-12, PG
    454 Academy Drive
    DurangoCO 81301
    (970) 247-5898
  • 4.-6.Rank: #4-6
    6

    Grades: 8-12, PG
    Dorfstrasse
    6085 Hasliberg GoldernSwitzerland 6085
    41339729292
  • 4.-6.Rank: #4-6
    6

    Grades: 7-12, PG
    333 Ocean Road
    NarragansettRI 02882
    (401) 788-0800
  • 7.-11.Rank: #7-11
    7
    Grades: 9-12, PG
    6544 Murray Lane
    BrentwoodTN 37027
    (615) 507-3173
  • 7.-11.Rank: #7-11
    Hoosac School
    Hoosac School Photo - Hoosac School was founded in 1889.
    (Episcopal)
    7

    Grades: 8-12, PG
    PO Box 9
    HoosickNY 12089
    (518) 686-7331
  • 7.-11.Rank: #7-11
    7

    Grades: 9-12, PG
    255 Squaw Valley Road | P.O. Box 2180
    Olympic ValleyCA 96146
    (530) 583-8665
  • 7.-11.Rank: #7-11
    Olney Friends School
    Olney Friends School Photo - Each Wednesday, students take part in a dedicated three-hour art block with advanced art electives offered throughout the week. Recently, Olney has offered Murals, Digital Video, Impressionistic Art, Scaling and Scenery, Theater, Guitar, Native Art, Woodworking and Box Making courses.
    (Society of Friends)
    7

    Grades: 9-12
    61830 Sandy Ridge Road
    BarnesvilleOH 43713
    (740) 425-3655
  • 7.-11.Rank: #7-11
    The Phelps School
    The Phelps School Photo - We are LIVE and IN PERSON! Proper COVID protocols being followed allowing us to continue our objective of transformation and maximization.
    All-Boys 
    7

    Grades: 6-12, PG
    583 Sugartown Road
    MalvernPA 19355
    (610) 644-1754
  • 12.-27.Rank: #12-27
    8
    Grades: 7-12
    PO Box 388
    BalsamNC 28707
    (828) 456-3435
  • 12.-27.Rank: #12-27
    Academy of the Holy Family
    Academy of the Holy Family Photo - Basketball Team
    All-Girls  (Catholic)
    8

    Grades: 9-12
    54 W. Main Street Box 691
    BalticCT 06330
    (860) 822-6279
  • 12.-27.Rank: #12-27
    8

    Grades: 6-12, PG
    1701 Brandon Hall Drive
    AtlantaGA 30350
    (770) 394-8177
  • 12.-27.Rank: #12-27
    Chatham Hall
    Chatham Hall Photo - Our traditions are a vital force: They bridge the generations, bond students, 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
  • 12.-27.Rank: #12-27
    8

    Grades: 5-12
    1950 S. Academy Dr
    MelbourneFL 32901
    (321) 723-3211
  • 12.-27.Rank: #12-27
    8

    Grades: 8-12, PG
    3042 College St.
    AustinburgOH 44010
    (440) 275-2811
  • 12.-27.Rank: #12-27
    8

    Grades: 9-12, PG
    476 Skiff Mountain Road
    KentCT 06757
    (860) 927-0047
  • 12.-27.Rank: #12-27
    8

    Grades: 4-9
    4382 Cascade Road
    Lake PlacidNY 12946
    (518) 523-9329
  • 12.-27.Rank: #12-27
    Oak Hill Academy
    Oak Hill Academy Photo - RSVP to join us for a chat about Oak Hill Academy! https://www.oak-hill.net/open-houses/
    (Baptist)
    8

    Grades: 8-12
    2635 Oak Hill Road
    Mouth of WilsonVA 24363
    (276) 579-2619
  • 12.-27.Rank: #12-27
    Oldfields School
    Oldfields School Photo - Our community has a wonderful reopening experience under our belts, and we are looking forward to the months ahead! Oldfields is operating on campus and in person for the 2020-2021 school year. Application Fee Waiver Code: OSBSR
    All-Girls 
    8

    Grades: 8-12
    1500 Glencoe Road
    Sparks GlencoeMD 21152
    (410) 472-4800
  • 12.-27.Rank: #12-27
    8

    Grades: 9-12, PG
    1 Rock Point Road
    BurlingtonVT 05408
    (802) 863-1104
  • 12.-27.Rank: #12-27
    8

    Grades: 8-12, PG
    45 Cottage Road
    OakdaleCT 06370
    (860) 823-3861
  • 12.-27.Rank: #12-27
    St. Timothy's School
    St. Timothy's School Photo - Completed in 2012, Dixon Hall is our state-of-the-art academic building. The technology-rich facility features the Taft Lecture Hall, the Coleman World Languages and Cultures Center, and a Center for Learning and Teaching.
    All-Girls  (Episcopal)
    8

    Grades: 9-12, PG
    8400 Greenspring Avenue
    StevensonMD 21153
    (410) 486-7401
  • 12.-27.Rank: #12-27
    8

    Grades: 9-12
    1951 Delta Avenue
    West BranchIA 52358
    (319) 519-1856
  • 12.-27.Rank: #12-27
    8

    Grades: 9-12, PG | K-12, PG (day)
    42605 RCR 36
    Steamboat SpringsCO 80487
    (970) 879-1350
  • 12.-27.Rank: #12-27
    8

    Grades: 6-12
    22000 Hwy 27
    Lake WalesFL 33859
    (863) 676-6091
  • 28.-34.Rank: #28-34
    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
  • 28.-34.Rank: #28-34
    9

    Grades: 9-12, PG
    291 South Street
    WilliamstownMA 01267
    (413) 458-3919
  • 28.-34.Rank: #28-34
    9

    Grades: 9-12, PG
    110 Darrow Road
    New LebanonNY 12125
    (518) 704-2765
  • 28.-34.Rank: #28-34
    9

    Grades: 8-12, PG
    1000 Samuel Miller Loop
    CharlottesvilleVA 22903
    (434) 823-4805
  • 28.-34.Rank: #28-34
    9

    Grades: 8-12, PG
    1000 Orme School Road, H.C. 63, Box 3040
    MayerAZ 86333
    (928) 632-7601
  • 28.-34.Rank: #28-34
    9

    Grades: 6-12, PG
    2800 Monterey Road
    San MarinoCA 91108
  • 28.-34.Rank: #28-34
    9

    Grades: 6-9
    253 Bushy Hill Road
    IvorytonCT 06442
    (860) 767-0848
  • 35.-58.Rank: #35-58
    10
    Grades: 5-12, PG | K-12, PG (day)
    54-230 Kamehameha Hwy
    HauulaHI 96717
    (808) 670-1909
  • 35.-58.Rank: #35-58
    10

    Grades: 9-12, PG
    8585 Ojai Santa Paula Road
    OjaiCA 93023
    (805) 646-4343
  • 35.-58.Rank: #35-58
    10

    Grades: 9-12, PG
    785 Beaver Street
    WalthamMA 02452
    (781) 314-0806
  • 35.-58.Rank: #35-58
    10

    Grades: 6-12, PG | 3-12, PG (day)
    Route de Belfort 10
    PorrentruySwitzerland 2900
    41324661157
  • 35.-58.Rank: #35-58
    10

    Grades: 9-12
    18 Lehmann Way, PO Box 522
    DublinNH 03444
    (603) 563-7075
  • 35.-58.Rank: #35-58
    10

    Grades: 7-12
    225 S. Wayne Avenue
    WaynesboroVA 22980
    (540) 946-7706
  • 35.-58.Rank: #35-58
    Freeman Academy
    Freeman Academy Photo - Freeman Academy - Faith-inspired learning for LIFE
    (Christian)
    10

    Grades: 7-12 | K-12 (day)
    PO BOX 1000748 S. Main St.
    FreemanSD 57029
    (605) 925-4237
  • 35.-58.Rank: #35-58
    10

    Grades: 6-12, PG
    280 King Street East
    BrockvilleCanada K6V1E2
    (613) 341-9330
  • 35.-58.Rank: #35-58
    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
  • 35.-58.Rank: #35-58
    La Lumiere School
    La Lumiere School Photo - Our liberal arts curriculum provides a foundation in English literature and composition, mathematics, social and physical sciences, world languages, theology, ethics, and the creative arts, with a special emphasis on critical thinking and the mastery of oral and written communication.
    (Catholic)
    10

    Grades: 9-12, PG
    6801 N. Wilhelm Road
    La PorteIN 46350
    (219) 326-7450
  • 35.-58.Rank: #35-58
    10

    Grades: 9-12
    4 Lustre High Circle
    LustreMT 59225
    (406) 392-5735
  • 35.-58.Rank: #35-58
    10

    Grades: 5-12, PG
    614 S MAIN ST
    WoodstockVA 22664
    (540) 459-2167
  • 35.-58.Rank: #35-58
    10

    Grades: 5-12, PG
    614 South Main Street
    WoodstockVA 22664
    (540) 459-2167
  • 35.-58.Rank: #35-58
    10

    Grades: 9-12, PG
    118 Main Street East, Merrickville, Ontario
    MerrickvilleCanada K0G1N
    (613) 269-2064
  • 35.-58.Rank: #35-58
    10

    Grades: 9-12
    PO Box 8 / 5100 Figueroa Mountain Road
    Los OlivosCA 93441
    (805) 688-5114
  • 35.-58.Rank: #35-58
    Miss Hall's School
    Miss Hall's School Photo - A talented, supportive community of learners awaits you at MHS. Our faculty are dedicated mentors who are passionate about their subjects and creative in their teaching, unafraid to ditch the textbook in favor of collaborative, project-based learning.
    All-Girls 
    10

    Grades: 9-12, PG
    492 Holmes Road
    PittsfieldMA 01201
    (413) 499-1300
  • 35.-58.Rank: #35-58
    10

    Grades: 8-12
    78 Academy Avenue
    Cornwall-on-HudsonNY 12520
    (845) 534-3710
  • 35.-58.Rank: #35-58
    10

    Grades: 9-12
    1500 Port Arthur Road
    LadysmithWI 54848
    (715) 532-0201
  • 35.-58.Rank: #35-58
    10

    Grades: 9-12, PG
    92 Northwood Road
    Lake PlacidNY 12946
    (518) 523-3382
  • 35.-58.Rank: #35-58
    10

    Grades: 7-12
    1101 Genesee Street
    DelafieldWI 53018
    (800) 752-2338
  • 35.-58.Rank: #35-58
    St. Margaret's School
    St. Margaret's School Photo - WE BELIEVE YOU BELONG HERE. * 10 acre historic waterfront campus * 42 acre athletic complex * Within 2 hours of Washington, DC, Richmond, Charlottesville, Williamsburg, and Virginia Beach
    All-Girls  (Episcopal)
    10

    Grades: 8-12, PG
    PO Box 158, 444 Water Lane
    TappahannockVA 22560
    (804) 443-3357
  • 35.-58.Rank: #35-58
    10

    Grades: 7-12, PG
    574 Bernardston Road
    GreenfieldMA 01301
    (413) 774-2711
  • 35.-58.Rank: #35-58
    10

    Grades: 9-12
    101 North University
    Beaver DamWI 53916
    (800) 860-7725
  • 35.-58.Rank: #35-58
    10

    Grades: 9-12, PG
    371 West Farm Road
    BethlehemNH 03574
    (603) 444-2928
  • 59.-62.Rank: #59-62
    The Kiski School
    The Kiski School Photo - Kiski's outdoor classroom and project-based learning culture gives boys the opportunity to get out of traditional four-walled classrooms and experience the beautiful scenery that Western Pennsylvania autumn offers! With our dedicated STEAM and Makerspace areas, young men get to roll up their sleeves and enjoy hands-on learning!
    All-Boys 
    11
    Grades: 9-12, PG
    1888 Brett Lane
    SaltsburgPA 15681
    (724) 639-8035
  • 59.-62.Rank: #59-62
    11

    Grades: 9-12, PG
    45 Waterloo Street South
    Stratford, ONCanada L0R1B
    (519) 272-1900
  • 59.-62.Rank: #59-62
    11

    Grades: 9-12, PG
    1079 Firetower Road
    ColoraMD 21917
    (410) 658-9279
  • 59.-62.Rank: #59-62
    Westover School
    Westover School Photo
    All-Girls 
    11

    Grades: 9-12, PG
    1237 Whittemore Rd.
    MiddleburyCT 06762
    (203) 577-4521
  • 63.-79.Rank: #63-79
    12
    Grades: 11-12, PG
    International (on a Tall Ship)
    KristiansandNorway 4610
    47904180
  • 63.-79.Rank: #63-79
    12

    Grades: 3-9 | K-9 (day)
    94 Old Main Street, PO Box 8
    DeerfieldMA 01342
    (413) 774-4209
  • 63.-79.Rank: #63-79
    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
  • 63.-79.Rank: #63-79
    Buffalo Seminary
    Buffalo Seminary Photo - Our oldest tradition may be forward thinking but we are anchored in many other traditions too. Roses and white dresses for commencement. Our Social & Academic Honor Code. Morning Meeting to start the day. ..
    All-Girls 
    12

    Grades: 9-12, PG
    205 Bidwell Parkway
    BuffaloNY 14222
    (716) 885-6780
  • 63.-79.Rank: #63-79
    12

    Grades: 9-12
    500 Holden Way
    CarbondaleCO 81623
    (970) 963-2562
  • 63.-79.Rank: #63-79
    Hillside School
    Hillside School Photo
    All-Boys 
    12

    Grades: 4-9
    404 Robin Hill Street
    MarlboroughMA 01752
    (508) 485-3483
  • 63.-79.Rank: #63-79
    12

    Grades: 9-12, PG
    616 High Street
    BathME 04530
    (207) 443-7101
  • 63.-79.Rank: #63-79
    12

    Grades: 9-12, PG
    4000 M 137 Hwy
    InterlochenMI 49643
    (231) 276-7472
  • 63.-79.Rank: #63-79
    12

    Grades: 6-12, PG
    541 Long Beach Road
    Saint JamesNY 11780
    (631) 686-1600
  • 63.-79.Rank: #63-79
    12

    Grades: 9-12 | Pre-K-12 (day)
    804 Dr Robert K Wallace Drive
    FairfieldIA 52556
    (641) 472-9400
  • 63.-79.Rank: #63-79
    12

    Grades: 9-12, PG
    W10085 Pike Plains Road
    DunbarWI 54119
    (715) 324-6900
  • 63.-79.Rank: #63-79
    12

    Grades: 6-12
    174 Ward Circle
    Camp HillAL 36850
    (256) 675-6260
  • 63.-79.Rank: #63-79
    12

    Grades: 6-12, PG
    1 Ames Hill Drive
    SpringfieldMA 01105
    (413) 237-4427
  • 63.-79.Rank: #63-79
    Stuart Hall School
    Stuart Hall School Photo - Students socialize between classes in the historic arcade
    (Episcopal)
    12

    Grades: 8-12, PG | 4-12, PG (day)
    235 West Frederick Street
    StauntonVA 24401
    (540) 213-7774
  • 63.-79.Rank: #63-79
    12

    Grades: 7-12 | K-12 (day)
    400 Sunshine Drive
    MillerSD 57362
    (605) 853-3071
  • 63.-79.Rank: #63-79
    12

    Grades: 9-12
    3511 Verde Valley School Road
    SedonaAZ 86351
    (928) 284-2272
  • 63.-79.Rank: #63-79
    12

    Grades: 7-12, PG
    59550 East Highway 26
    SandyOR 97055
    (503) 622-8931
  • 80.-81.Rank: #80-81
    13
    Grades: 11-12
    Pullens Lane Headington
    OxfordUnited Kingdom ox3 0da
    9144956028
  • 80.-81.Rank: #80-81
    13

    Grades: 9-12 | 6-12 (day)
    22 Spackenkill Road
    PoughkeepsieNY 12603
    (845) 462-4200
  • 82.-85.Rank: #82-85
    Foxcroft School
    Foxcroft School Photo - Schoolhouse
    All-Girls 
    14
    Grades: 9-12, PG
    22407 Foxhound Lane
    MiddleburgVA 20117
    (540) 687-4340
  • 82.-85.Rank: #82-85
    14

    Grades: 9-12 | 6-12 (day)
    280 Locke Drive
    MarlboroughMA 01752
    (508) 658-0170
  • 82.-85.Rank: #82-85
    14

    Grades: 10-12
    1460 Broadway Street #7032
    New YorkNY 10036
    (646) 504-6924
  • 82.-85.Rank: #82-85
    14

    Grades: 7-12
    4100 South Lindbergh Blvd.
    Saint LouisMO 63127
    (314) 843-4151
  • 86.-90.Rank: #86-90
    15
    Grades: 9-12 | Pre-K-12 (day)
    2 Valleywood Drive
    MarkhamCanada L3R8H3
    (905) 477-4999
  • 86.-90.Rank: #86-90
    15

    Grades: 5-12
    6727 South Chippawa Rd
    Wellandport, OntarioCanada 12345
    (905) 386-6203
  • 86.-90.Rank: #86-90
    15

    Grades: 9-12, PG
    5201 SPIRE Circle
    GenevaOH 44041
    (440) 466-1002
  • 86.-90.Rank: #86-90
    15

    Grades: 8-12 | 6-12 (day)
    505 Spring Street
    Friday HarborWA 98250
    (360) 378-6393
  • 86.-90.Rank: #86-90
    Subiaco Academy
    Subiaco Academy Photo - Subiaco Students with Father Cassian
    All-Boys  (Catholic)
    15

    Grades: 7-12
    405 North Subiaco Avenue
    SubiacoAR 72865
    (479) 422-9775
  • 91.-94.Rank: #91-94
    >15
    Grades: 9-12
    41 W Santa Clara St.
    ArcadiaCA 91007
    (626) 623-6339
  • 91.-94.Rank: #91-94
    >15

    Grades: 9-12
    615 East Marquette Woods Road
    St. JosephMI 49085
    (269) 429-7861
  • 91.-94.Rank: #91-94
    >15

    Grades: 11-11
    485 Chewonki Neck Road
    WiscassetME 04578
    (207) 882-7323
  • 91.-94.Rank: #91-94
    >15

    Grades: 9-12
    5430 Torrance Blvd
    TorranceCA 90503

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