Smallest Average Class Size (2017-2018)

All Schools
All Schools 
400+ students
400+ students 
200-400 students
200-400 students 
< 200 students
< 200 students 
More
  • Among "Schools with 200-400 Students", view the boarding schools with the smallest average class sizes.
  • 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

Among Schools with 200-400 Students (out of 122 schools)

Sorted by range (alphabetically within range)
  • Boarding School # Students Grades Location
  • 1.
    6
    Grades: 8-12
    P.O. Box 116 , 242 Old Petersham Road
    HardwickMA 01037
    413-477-6000
  • 2.
    7
    Grades: 9-12, PG
    172 Ash Street
    WinchendonMA 01475
    978-297-4476
  • 3.-4.
    8
    Grades: 9-12, PG
    12 Norfolk Road, P.O. Box 80
    LitchfieldCT 06759
    860-567-1802
  • 3.-4.
    8

    Grades: 9-12, PG | 6-12, PG (day)
    63 Federal Road
    BarringtonRI 02806
    401-246-1230
  • 5.-7.
    Grier School
    All-Girls 
    9
    Grades: 7-12, PG
    P.O. Box 308
    TyronePA 16686
    814-684-3000
  • 5.-7.
    St. Timothy's School
    All-Girls  (Episcopal)
    9

    Grades: 9-12, PG
    8400 Greenspring Avenue
    StevensonMD 21153
    410-486-7401
  • 5.-7.
    9

    Grades: 8-12, PG
    120 South 100 West
    Mt. PleasantUT 84647
    435-462-1400
  • 8.-20.
    10
    Grades: 9-12
    1960 Cate Mesa Road, P.O. Box 5005
    CarpinteriaCA 93013
    8056844127
  • 8.-20.
    10

    Grades: 6-9
    271 Pine Nook Road, P.O. Box 7
    DeerfieldMA 01342
    413-774-9111
  • 8.-20.
    10

    Grades: 6-9 | Pre-K-9 (day)
    211 Indian Mountain Road
    LakevilleCT 06039
    435-480-0871
Sorted by range (alphabetically within range)
  • Boarding School # Students Grades Location
  • 11.-20.
    Linden Hall School
    All-Girls 
    10
    Grades: 6-12, PG
    212 East Main Street
    LititzPA 17543
    717-626-8512
  • 11.-20.
    Miss Hall's School
    All-Girls 
    10

    Grades: 9-12, PG
    492 Holmes Road, PO Box 1166
    PittsfieldMA 01201
    413-499-1300
  • 11.-20.
    10

    Grades: 9-12
    60 Main Street
    FarmingtonCT 06032
    8604093530
  • 11.-20.
    10

    Grades: 5-9 | Pre-K-9 (day)
    P.O. Box 68 528 Pomfret Street
    PomfretCT 06258
    860-928-1328
  • 11.-20.
    St. George's School
    (Episcopal)
    10

    Grades: 9-12
    PO Box 1910
    NewportRI 02840
    401-842-6600
  • 11.-20.
    10

    Grades: 9-12 | 7-12 (day)
    6832 Phillips Mill Road
    New HopePA 18938
    215-862-5261
  • 11.-20.
    Stuart Hall School
    (Episcopal)
    10

    Grades: 8-12 | Pre-K-12 (day)
    235 West Frederick Street
    StauntonVA 24401
    540-213-3746
  • 11.-20.
    10

    Grades: 9-12, PG
    10 Long Walk
    Saxtons RiverVT 05154
    8028696229
  • 11.-20.
    10

    Grades: 7-12 | 6-12 (day)
    319 Webb Road East
    Bell BuckleTN 37020
    931-389-6003
  • 11.-20.
    10

    Grades: 9-12
    241 Woodberry Station
    Woodberry ForestVA 22989
    888-798-9371
  • 21.-36.
    11
    Grades: 9-12, PG
    80 Academy Drive
    WolfeboroNH 03894
    603-569-7200
  • 21.-36.
    Buffalo Seminary
    All-Girls 
    11

    Grades: 9-12, PG
    205 Bidwell Parkway
    BuffaloNY 14222
    716-885-6780
  • 21.-36.
    Canterbury School
    (Catholic)
    11

    Grades: 9-12, PG
    101 Aspetuck Avenue
    New MilfordCT 06776
    (860)210-3832
  • 21.-36.
    Christ School
    All-Boys  (Episcopal)
    11

    Grades: 8-12
    500 Christ School Road
    AshevilleNC 28704
    8286846232
  • 21.-36.
    11

    Grades: 9-12, PG
    PO Box 860
    BethelME 04217
    207-824-7777
  • 21.-36.
    Hargrave Military Academy
    All-Boys  (Baptist)
    11

    Grades: 7-12, PG
    200 Military Drive
    ChathamVA 24531
    800-432-2480
  • 21.-36.
    11

    Grades: 9-12, PG
    PO Box 257, 1614 Main St., Rte. 17
    Kents HillME 04349
    207-685-1606
  • 21.-36.
    La Lumiere School
    (Catholic)
    11

    Grades: 9-12, PG
    6801 N. Wilhelm Road
    La PorteIN 46350
    2193267450
  • 21.-36.
    11

    Grades: 6-12, PG
    66 School Street
    GranbyMA 01033
    413-255-0000
  • 21.-36.
    11

    Grades: 8-12, PG
    320 Iwo Jima Blvd
    HarlingenTX 78550
  • 21.-36.
    11

    Grades: 9-12, PG
    70 Main Street
    New HamptonNH 03256
    603-677-3401
  • 21.-36.
    11

    Grades: 6-12, PG
    200 Seminary Street
    PennsburgPA 18073
    215-679-9511
  • 21.-36.
    11

    Grades: 9-12, PG
    PO Box 128, 398 Pomfret Street
    PomfretCT 06258
    860-963-6120
  • 21.-36.
    Saint James School
    (Episcopal)
    11

    Grades: 8-12
    17641 College Road
    HagerstownMD 21740
    3017339330
  • 21.-36.
    11

    Grades: 9-12
    5025 Thacher Road
    OjaiCA 93023
    805-640-3210
  • 21.-36.
    Westover School
    All-Girls 
    11

    Grades: 9-12
    1237 Whittemore Rd., P.O. Box 847
    MiddleburyCT 06762
    203-577-4521
  • 37.-76.
    12
    Grades: 3-9 | K-9 (day)
    94 Old Main Street, PO Box 8
    DeerfieldMA 01342
    413-774-4209
  • 37.-76.
    12

    Grades: 9-12, PG
    245 North Undermountain Road
    SheffieldMA 01257
    413-229-1003
  • 37.-76.
    Brooks School
    (Episcopal)
    12

    Grades: 9-12
    1160 Great Pond Road
    North AndoverMA 01845
    978-725-6272
  • 37.-76.
    12

    Grades: 7-12, PG
    520 Hwy. 1 North
    CamdenSC 29020
    800-948-6291
  • 37.-76.
    12

    Grades: 9-12
    62 Alumni Drive
    CanaanNH 03741
    603-523-3548
  • 37.-76.
    12

    Grades: 9-12
    2001 Washington Street
    BraintreeMA 02184
    857-400-9700
  • 37.-76.
    Christchurch School
    (Episcopal)
    12

    Grades: 9-12
    49 Seahorse Lane
    ChristchurchVA 23031
    804-758-2306
  • 37.-76.
    12

    Grades: 9-12
    166 Main Street
    ConcordMA 01742
    978-402-2250
  • 37.-76.
    12

    Grades: 9-12, PG
    39 School Street, P.O. Box 8000
    AshburnhamMA 01430
    978-827-7300
  • 37.-76.
    12

    Grades: 8-12 | 6-12 (day)
    P.O. Box 98, 2555 W. Highway 154
    Los OlivosCA 93441
    800-287-9197
  • 37.-76.
    12

    Grades: 8-12, PG | Pre-K-12, PG (day)
    8150 Oliver Rd.
    EriePA 16510
    814-866-6979
  • 37.-76.
    12

    Grades: 9-12, PG | 6-12, PG (day)
    230 Bushy Hill Road
    SimsburyCT 06070
    860-408-4200
  • 37.-76.
    12

    Grades: 9-12
    6155 Fountain Valley School Road
    Colorado SpringsCO 80911
    719-391-5251
  • 37.-76.
    Groton School
    (Episcopal)
    12

    Grades: 8-12
    282 Farmers Row, Box 991
    GrotonMA 01450
    978-448-7510
  • 37.-76.
    12

    Grades: 9-12, PG
    99 Green Hill Road
    WashingtonCT 06793
    860-868-7334
  • 37.-76.
    12

    Grades: 9-12, PG | 6-12, PG (day)
    P.O. Box 309
    HebronME 04238
    207-966-5225
  • 37.-76.
    Holderness School
    (Episcopal)
    12

    Grades: 9-12, PG
    PO Box 1879
    PlymouthNH 03264
    603-536-1747
  • 37.-76.
    12

    Grades: 9-12, PG
    7 Campus Center, PO Box 188
    MeridenNH 03770
    6034692100
  • 37.-76.
    12

    Grades: 9-12
    44 Main Street, PO Box 992
    GrotonMA 01450
    978-448-1530
  • 37.-76.
    12

    Grades: 7-12, PG
    Chemin de la Source
    LeysinSwitzerland 1854
    0041244934888
  • 37.-76.
    The Madeira School
    All-Girls 
    12

    Grades: 9-12, PG
    8328 Georgetown Pike
    McLeanVA 22102-1200
    703-556-8273
  • 37.-76.
    12

    Grades: 9-12 | Pre-K-12 (day)
    804 Dr RK Wallace Drive
    FairfieldIA 52556
    6414729400
  • 37.-76.
    12

    Grades: 9-12, PG
    26 Chase Road
    ThompsonCT 06277
    8609239245
  • 37.-76.
    12

    Grades: 9-12, PG
    131 Millbrook School Road
    MillbrookNY 12545
    845-677-8261
  • 37.-76.
    12

    Grades: 3-12 | Pre-K-12 (day)
    723 El Paseo Road
    OjaiCA 93023
    (805)646-1423
  • 37.-76.
    12

    Grades: 9-12, PG
    204 Main Street - P.O. Box 500
    AndoverNH 03216
    603-735-6212
  • 37.-76.
    12

    Grades: 9-12, PG
    418 Houghton Brook Road
    PutneyVT 05346
    802-387-6219
  • 37.-76.
    Randolph-Macon Academy
    (United Methodist)
    12

    Grades: 9-12, PG
    200 Academy Drive
    Front RoyalVA 22630
    540-636-5484
  • 37.-76.
    12

    Grades: 5-9 | K-9 (day)
    201 Romford Road
    Washington DepotCT 06794
    8608680535
  • 37.-76.
    12

    Grades: 9-12
    350 Noxontown Road
    MiddletownDE 19709
    3022854231
  • 37.-76.
    St. John's Military School
    All-Boys  (Episcopal)
    12

    Grades: 6-12
    Po Box 5020
    SalinaKS 67402
    (866)704-5294
  • 37.-76.
    St. Mark's School
    (Episcopal)
    12

    Grades: 9-12
    25 Marlboro Road
    SouthboroughMA 01772
    508-786-6118
  • 37.-76.
    Salisbury School
    All-Boys 
    12

    Grades: 9-12, PG
    251 Canaan Road
    SalisburyCT 06068
    860-435-5732
  • 37.-76.
    12

    Grades: 6-12 | 4-12 (day)
    2801 Ranch Road 12
    San MarcosTX 78666
    1-800-428-5120
  • 37.-76.
    Santa Catalina School
    All-Girls  (Catholic)
    12

    Grades: 9-12
    1500 Mark Thomas Drive
    MontereyCA 93940
    831-655-9356
  • 37.-76.
    12

    Grades: 9-12, PG
    30 School Street
    TiltonNH 03276
    603-286-1733
  • 37.-76.
    Trinity-Pawling School
    All-Boys  (Episcopal)
    12

    Grades: 9-12, PG | 7-12, PG (day)
    700 Route 22
    PawlingNY 12564
    845-855-4825
  • 37.-76.
    12

    Grades: 7-12 | 6-12 (day)
    1001 Eagle Road
    WaynePA 19087
    610-989-1200
  • 37.-76.
    12

    Grades: 9-12
    400 VES Road
    LynchburgVA 24503
    434-385-3607
  • 37.-76.
    12

    Grades: 9-12, PG
    995 Hopmeadow Street
    SimsburyCT 06070
    860-408-3060
  • 77.-88.
    13
    Grades: 9-12
    360 Asheville School Rd.
    AshevilleNC 28806
    828-254-6345
  • 77.-88.
    13

    Grades: 9-12, PG
    45 Georgian Road
    WestonMA 02493
    781-642-8650
  • 77.-88.
    13

    Grades: 9-12 | Pre-K-12 (day)
    1 Community School Drive
    Sun ValleyID 83353
    208-622-3955
  • 77.-88.
    13

    Grades: 11-12
    Pullens Lane Headington
    OxfordUnited Kingdom 30
    914-495-6028
  • 77.-88.
    13

    Grades: 9-12
    EF House, Castle Road
    TorquayUnited Kingdom 13
    914-495-6028
  • 77.-88.
    13

    Grades: 9-12, PG
    52500 Temecula Road P.O. Box 38
    IdyllwildCA 92549
    19514687223
  • 77.-88.
    The Kiski School
    All-Boys 
    13

    Grades: 9-12, PG
    1888 Brett Lane
    SaltsburgPA 15681
    724-639-8035
  • 77.-88.
    13

    Grades: 9-12
    285 Cory's Lane
    PortsmouthRI 02871
    401-643-1248
  • 77.-88.
    Saint Mary's School
    All-Girls  (Episcopal)
    13

    Grades: 9-12
    900 Hillsborough St.
    RaleighNC 27603
    919-424-4100
  • 77.-88.
    13

    Grades: 9-12, PG
    Via Aventina 3
    RomeItaly 00153
    0039065750605
  • 77.-88.
    13

    Grades: 9-12, PG
    PO Box 190, 66 Cutler Road
    East MachiasME 04630
    2072558301
  • 77.-88.
    13

    Grades: 9-12 | 6-12 (day)
    302 Portola Road
    Portola ValleyCA 94028
    650-851-8223
  • 89.-92.
    14
    Grades: 9-12, PG
    300 Calverton School Rd.
    HuntingtownMD 20639
    410-535-0216
  • 89.-92.
    14

    Grades: 9-12
    190 Woodward Drive
    Indian SpringsAL 35124
    888-843-9477
  • 89.-92.
    14

    Grades: 9-12 | Pre-K-12 (day)
    220 West Lomita
    OjaiCA 93023
    (805) 646-8236
  • 89.-92.
    14

    Grades: 7-12
    1 Chapman Parkway
    Stony BrookNY 11790
    631-751-1800
  • 93.-108.
    15
    Grades: 7-12 | K-12 (day)
    7401 Monticello Rd.
    ColumbiaSC 29203
    803-807-4145
  • 93.-108.
    15

    Grades: 9-12
    80 chemin Moulton Hill
    Sherbrooke, QuebecCanada J1M 1Z8
    819-566-0238
  • 93.-108.
    15

    Grades: 5-12 | Pre-K-12 (day)
    20950 SW Rock Creek Road
    SheridanOR 97378
    503-843-3521
  • 93.-108.
    15

    Grades: 8-12 | Pre-K-12 (day)
    300 Garrison Forest Road
    Owings MillsMD 21117
    410-559-3111
  • 93.-108.
    15

    Grades: 9-12
    23 Union Street
    Blue HillME 04614
    2073742808
  • 93.-108.
    15

    Grades: 9-12, PG | K-12, PG (day)
    65-1692 Kohala Mountain Road
    KamuelaHI 96743
    808-881-4321
  • 93.-108.
    15

    Grades: 9-12
    610 Hillcrest Dr.
    Fergus FallsMN 56537
    218-739-3371
  • 93.-108.
    15

    Grades: 11-12, PG | Pre-K-12, PG (day)
    Mühlentalstrasse 280CH-8200 Schaffhausen
    SchaffhausenSwitzerland 8200
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