Smallest Average Class Size

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 (2020-21).
  • 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 (2020-21)

Among Schools with 200-400 Students (out of 110 schools)

Sorted by range (alphabetically within range)
  • Boarding School # Students Grades Location
  • 1.Rank: #1
    6
    Grades: 8-12
    P.O. Box 116 , 242 Old Petersham Road
    HardwickMA 01037
    (413)477-6000
  • 2.-3.Rank: #2-3
    8
    Grades: 9-12, PG | 6-12, PG (day)
    63 Federal Road
    BarringtonRI 02806
    (401)246-1230
  • 2.-3.Rank: #2-3
    8

    Grades: 9-12, PG
    172 Ash Street
    WinchendonMA 01475
    (978)297-4476
  • 4.-8.Rank: #4-8
    9
    Grades: 9-12
    Floor 2, 50/60 Station Road
    CambridgeUnited Kingdom CB1 2JH
    +44 1223 345698
  • 4.-8.Rank: #4-8
    9

    Grades: 9-12, PG
    12 Norfolk Road, P.O. Box 80
    LitchfieldCT 06759
    (860)567-1802
  • 4.-8.Rank: #4-8
    Grier School
    Grier School Photo
    All-Girls 
    9

    Grades: 7-12, PG
    2522 Grier School Road
    TyronePA 16686
    (814)684-3000
  • 4.-8.Rank: #4-8
    9

    Grades: 6-12 | K-12 (day)
    2801 Ranch Road 12
    San MarcosTX 78666
    (800)428-5120
  • 4.-8.Rank: #4-8
    9

    Grades: 9-12
    241 Woodberry Station
    Woodberry ForestVA 22989
    (888)798-9371
  • 9.-21.Rank: #9-21
    10
    Grades: 9-12
    1960 Cate Mesa Road, P.O. Box 5005
    CarpinteriaCA 93013
    (805)684-4127
  • 9.-21.Rank: #9-21
    10

    Grades: 9-12, PG
    10 Main Street
    CheshireCT 06410
    (203)439-7250
  • 9.-21.Rank: #9-21
    10

    Grades: 9-12 | 6-12 (day)
    P.O. Box 98, 2555 W. Highway 154
    Los OlivosCA 93441
    (800)287-9197
  • 9.-21.Rank: #9-21
    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.-21.Rank: #9-21
    10

    Grades: 5-9 | Pre-K-9 (day)
    211 Indian Mountain Road
    LakevilleCT 06039
    (435)480-0871
  • 9.-21.Rank: #9-21
    10

    Grades: 7-12, PG
    Chemin de la Source
    LeysinSwitzerland 1854
    0041244934888
  • 9.-21.Rank: #9-21
    Linden Hall School
    Linden Hall School Photo
    All-Girls 
    10

    Grades: 6-12, PG
    212 East Main Street
    LititzPA 17543
    (717)626-8512
  • 9.-21.Rank: #9-21
    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
  • 9.-21.Rank: #9-21
    10

    Grades: 5-9 | Pre-K-9 (day)
    P.O. Box 68 528 Pomfret Street
    PomfretCT 06258
    (860)928-1328
  • 9.-21.Rank: #9-21
    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
  • 9.-21.Rank: #9-21
    10

    Grades: 9-12, PG
    6832 Phillips Mill Road
    New HopePA 18938
    (215)862-5261
  • 9.-21.Rank: #9-21
    10

    Grades: 9-12, PG
    10 Long Walk
    Saxtons RiverVT 05154
    (802)869-6229
  • 9.-21.Rank: #9-21
    10

    Grades: 7-12 | 6-12 (day)
    319 Webb Road East
    Bell BuckleTN 37020
    (931)389-6003
  • 22.-35.Rank: #22-35
    11
    Grades: 9-12, PG
    80 Academy Drive
    WolfeboroNH 03894
    (603)569-7200
  • 22.-35.Rank: #22-35
    Christ School
    Christ School Photo
    All-Boys  (Episcopal)
    11

    Grades: 8-12
    500 Christ School Road
    AshevilleNC 28704
    (828)684-6232
  • 22.-35.Rank: #22-35
    11

    Grades: 9-12, PG
    PO Box 860
    BethelME 04217
    (207)824-7777
  • 22.-35.Rank: #22-35
    Groton School
    (Episcopal)
    11

    Grades: 8-12
    282 Farmers Row, Box 991
    GrotonMA 01450
    (978)448-7510
  • 22.-35.Rank: #22-35
    11

    Grades: 9-12, PG
    PO Box 257, 1614 Main St., Rte. 17
    Kents HillME 04349
    (207)685-1606
  • 22.-35.Rank: #22-35
    11

    Grades: 9-12, PG
    64 Main Street
    MeridenNH 03770
    (603)469-2100
  • 22.-35.Rank: #22-35
    11

    Grades: 6-12, PG
    66 School Street
    GranbyMA 01033
    (413)255-0000
  • 22.-35.Rank: #22-35
    11

    Grades: 7-12, PG
    320 Iwo Jima Blvd
    HarlingenTX 78550
  • 22.-35.Rank: #22-35
    11

    Grades: 9-12, PG
    70 Main Street
    New HamptonNH 03256
    (603)677-3401
  • 22.-35.Rank: #22-35
    11

    Grades: 6-12, PG
    200 Seminary Street
    PennsburgPA 18073
    (215)679-9511
  • 22.-35.Rank: #22-35
    11

    Grades: 6-12, PG | K-12, PG (day)
    18 Goodfriend Drive
    East HamptonNY 11937
    (631)907-5400
  • 22.-35.Rank: #22-35
    Saint James School
    Saint James School Photo - Saint James' picturesque 689-acre campus is conveniently located only 70 miles from the Baltimore-Washington metropolitan area.
    (Episcopal)
    11

    Grades: 8-12
    17641 College Road
    HagerstownMD 21740
    (301)733-9330
  • 22.-35.Rank: #22-35
    11

    Grades: 9-12
    5025 Thacher Road
    OjaiCA 93023
    (805)640-3210
  • 22.-35.Rank: #22-35
    11

    Grades: 7-12
    1001 Eagle Road
    WaynePA 19087
    (610)989-1200
  • 36.-75.Rank: #36-75
    12
    Grades: 9-12
    827 N. Tacoma Avenue
    TacomaWA 98403
    (253)284-8601
  • 36.-75.Rank: #36-75
    12

    Grades: 5-9 | Pre-K-9 (day)
    120 Prospect Street
    FitchburgMA 01420
    (978)342-6053
  • 36.-75.Rank: #36-75
    12

    Grades: 3-9 | K-9 (day)
    94 Old Main Street, PO Box 8
    DeerfieldMA 01342
    (413)774-4209
  • 36.-75.Rank: #36-75
    Brooks School
    Brooks School Photo - Come visit our beautiful 251 acre campus located on the shores of Lake Cochichewick.
    (Episcopal)
    12

    Grades: 9-12
    1160 Great Pond Road
    North AndoverMA 01845
    (978)725-6272
  • 36.-75.Rank: #36-75
    12

    Grades: 8-12, PG | Pre-K-12, PG (day)
    300 Calverton School Rd
    HuntingtownMD 20639
    (410)535-0216
  • 36.-75.Rank: #36-75
    12

    Grades: 7-12, PG
    520 Hwy. 1 North
    CamdenSC 29020
    (800)948-6291
  • 36.-75.Rank: #36-75
    Canterbury School
    Canterbury School Photo - At Canterbury, you will develop the skills most essential to meeting future challenges and succeeding in college. These start with critical thinking, excellence in writing, and a solid foundation in digital literacy.
    (Catholic)
    12

    Grades: 9-12, PG
    101 Aspetuck Avenue
    New MilfordCT 06776
    (860)210-3832
  • 36.-75.Rank: #36-75
    12

    Grades: 6-9
    62 Alumni Drive
    CanaanNH 03741
    (603)523-3548
  • 36.-75.Rank: #36-75
    12

    Grades: 9-12
    2001 Washington Street
    BraintreeMA 02184
    (857)400-9700
  • 36.-75.Rank: #36-75
    Christchurch School
    Christchurch School Photo - "Set your course at the river. " Established in the Episcopal tradition, Christchurch is inclusive, welcoming students and families of all faiths and backgrounds.
    (Episcopal)
    12

    Grades: 9-12
    49 Seahorse Lane
    ChristchurchVA 23031
    (804)758-2306
  • 36.-75.Rank: #36-75
    12

    Grades: 9-12
    166 Main Street
    ConcordMA 01742
    (978)402-2250
  • 36.-75.Rank: #36-75
    12

    Grades: 9-12, PG
    39 School Street
    AshburnhamMA 01430
    (978)827-7300
  • 36.-75.Rank: #36-75
    12

    Grades: 8-12
    1539 E Howard St.
    PasadenaCA 91104
    (914)495-6069
  • 36.-75.Rank: #36-75
    12

    Grades: 7-12, PG | 6-12, PG (day)
    230 Bushy Hill Road
    SimsburyCT 06070
    (860)408-4200
  • 36.-75.Rank: #36-75
    12

    Grades: 9-12, PG | 5-12, PG (day)
    4800 139th Avenue SE
    BellevueWA 98006
    (425)641-0700
  • 36.-75.Rank: #36-75
    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
  • 36.-75.Rank: #36-75
    12

    Grades: 9-12
    6155 Fountain Valley School Road
    Colorado SpringsCO 80911
    (719)391-5251
  • 36.-75.Rank: #36-75
    12

    Grades: 6-12, PG
    339 Paris Road PO Box 309
    HebronME 04238
    (207)966-5225
  • 36.-75.Rank: #36-75
    Holderness School
    Holderness School Photo - In the Holderness classroom, each student is literally in the front row, with an average class size of 12. We offer AP courses spanning multiple disciplines and encourage students to pursue an intellectual passion of their own in their twelfth-grade year as part of the Senior Thesis program.
    (Episcopal)
    12

    Grades: 9-12, PG
    PO Box 1879
    PlymouthNH 03264
    (603)536-1747
  • 36.-75.Rank: #36-75
    The Madeira School
    The Madeira School Photo - Capitol Hill internships in the offices of senators and representatives are a hallmark of the junior year at Madeira
    All-Girls 
    12

    Grades: 9-12, PG
    8328 Georgetown Pike
    McLeanVA 22102-1200
    (703)556-8273
  • 36.-75.Rank: #36-75
    12

    Grades: 6-12, PG
    295 Main Street
    PittsfieldME 04967
    (207)487-2282
  • 36.-75.Rank: #36-75
    12

    Grades: 9-12, PG
    26 Chase Road
    ThompsonCT 06277
    (860)923-9245
  • 36.-75.Rank: #36-75
    12

    Grades: 9-12
    60 Main Street
    FarmingtonCT 06032
    (860)409-3530
  • 36.-75.Rank: #36-75
    12

    Grades: 3-12 | Pre-K-12 (day)
    723 El Paseo Road
    OjaiCA 93023
    (805)646-1423
  • 36.-75.Rank: #36-75
    12

    Grades: 9-12, PG
    PO Box 128, 398 Pomfret Street
    PomfretCT 06258
    (860)963-6120
  • 36.-75.Rank: #36-75
    12

    Grades: 9-12, PG
    204 Main Street - P.O. Box 500
    AndoverNH 03216
    (603)735-6652
  • 36.-75.Rank: #36-75
    12

    Grades: 9-12
    418 Houghton Brook Road
    PutneyVT 05346
    (802)387-6219
  • 36.-75.Rank: #36-75
    Randolph-Macon Academy
    Randolph-Macon Academy Photo - Randolph-Macon Academy's Flight Program includes a drone class called Unmanned Flight Operations. Students finish with the knowledge base for the FAA exam so they can obtain their commercial drone license if they so desire. This class is just one of the innovative offerings at R-MA.
    (United Methodist)
    12

    Grades: 9-12, PG
    200 Academy Drive
    Front RoyalVA 22630
    (540)636-5484
  • 36.-75.Rank: #36-75
    12

    Grades: 7-12
    2001 Riverside Drive
    GainesvilleGA 30501
    (800)462-2338
  • 36.-75.Rank: #36-75
    12

    Grades: 9-12
    350 Noxontown Road
    MiddletownDE 19709
    (302)285-4231
  • 36.-75.Rank: #36-75
    St. Mark's School
    St. Mark's School Photo - St. Mark's School
    (Episcopal)
    12

    Grades: 9-12
    25 Marlboro Road
    SouthboroughMA 01772
    (508)786-6118
  • 36.-75.Rank: #36-75
    Salisbury School
    Salisbury School Photo - Salisbury School
    All-Boys 
    12

    Grades: 9-12, PG
    251 Canaan Road
    SalisburyCT 06068
    (860)435-5732
  • 36.-75.Rank: #36-75
    12

    Grades: 9-12, PG | Pre-K-12, PG (day)
    6279 Hobbs Road
    SalisburyMD 21804
    (410)742-4464
  • 36.-75.Rank: #36-75
    Santa Catalina School
    Santa Catalina School Photo - Come visit our beautiful campus in Monterey, California! Call the admission office at 831.655.9356 or email admission@santacatalina.org to schedule your visit.
    All-Girls  (Catholic)
    12

    Grades: 9-12
    1500 Mark Thomas Drive
    MontereyCA 93940
    (831)655-9356
  • 36.-75.Rank: #36-75
    12

    Grades: 9-12, PG
    30 School Street
    TiltonNH 03276
    (603)286-1733
  • 36.-75.Rank: #36-75
    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
  • 36.-75.Rank: #36-75
    12

    Grades: 9-12
    400 VES Road
    LynchburgVA 24503
    (434)385-3607
  • 36.-75.Rank: #36-75
    12

    Grades: 7-12, PG
    120 South 100 West
    Mt. PleasantUT 84647
    (435)462-1400
  • 36.-75.Rank: #36-75
    12

    Grades: 9-12, PG
    115 College Street
    HudsonOH 44236
    (330)650-9717
  • 36.-75.Rank: #36-75
    12

    Grades: 9-12, PG
    995 Hopmeadow Street
    SimsburyCT 06070
    (860)408-3060
  • 76.-87.Rank: #76-87
    13
    Grades: 9-12
    360 Asheville School Rd.
    AshevilleNC 28806
    (828)254-6345
  • 76.-87.Rank: #76-87
    13

    Grades: 9-12
    EF House, Castle Road
    TorquayUnited Kingdom 13
    00441803202932
  • 76.-87.Rank: #76-87
    13

    Grades: 10-12 | 5-12 (day)
    610 Hillcrest Dr.
    Fergus FallsMN 56537
    (218)739-3371
  • 76.-87.Rank: #76-87
    13

    Grades: 9-12, PG
    52500 Temecula Road
    IdyllwildCA 92549
    (951)468-7223
  • 76.-87.Rank: #76-87
    13

    Grades: 9-12, PG
    131 Millbrook School Road
    MillbrookNY 12545
    (845)677-8261
  • 76.-87.Rank: #76-87
    13

    Grades: 9-12
    285 Cory's Lane
    PortsmouthRI 02871
    (401)643-1248
  • 76.-87.Rank: #76-87
    Saint Mary's School
    Saint Mary's School Photo - Saint Mary's School offers a historic, 23-acre campus in the heart of Raleigh, North Carolina, and is only minutes from the renowned Research Triangle. Its unique location provides a vibrant 24/7 campus with unlimited opportunities for learning both on and off campus.
    All-Girls  (Episcopal)
    13

    Grades: 9-12
    900 Hillsborough Street
    RaleighNC 27603
    (919)424-4100
  • 76.-87.Rank: #76-87
    13

    Grades: 9-12, PG
    Via Aventina 3
    RomeItaly 00153
    +39 06 575 0605
  • 76.-87.Rank: #76-87
    13

    Grades: 7-12
    450 Dufferein
    StansteadCanada 05830
    (819)876-2223
  • 76.-87.Rank: #76-87
    13

    Grades: 9-12, PG
    PO Box 190, 66 Cutler Road
    East MachiasME 04630
    (207)255-8301
  • 76.-87.Rank: #76-87
    13

    Grades: 9-12, PG | 7-12, PG (day)
    19 Payson Avenue
    EasthamptonMA 01027
    (413)529-3241
  • 76.-87.Rank: #76-87
    13

    Grades: 9-12 | 6-12 (day)
    302 Portola Road
    Portola ValleyCA 94028
    (650)851-8223
  • 88.-90.Rank: #88-90
    14
    Grades: 9-12, PG
    45 Georgian Road
    WestonMA 02493
    (781)642-8650
  • 88.-90.Rank: #88-90
    14

    Grades: 7-12, PG
    204 Grand Street
    MexicoMO 65265
    (573)581-1776
  • 88.-90.Rank: #88-90
    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
  • 91.-101.Rank: #91-101
    15
    Grades: 7-12
    2605 Carlsbad Blvd.
    CarlsbadCA 92008
    (888)762-2338
  • 91.-101.Rank: #91-101
    15

    Grades: 7-12
    80 chemin Moulton Hill
    Sherbrooke, QuebecCanada J1M 1Z8
    (819)566-0238
  • 91.-101.Rank: #91-101
    15

    Grades: 9-12, PG | K-12, PG (day)
    65-1692 Kohala Mountain Road
    KamuelaHI 96743
    (808)881-4321
  • 91.-101.Rank: #91-101
    15

    Grades: 11-12, PG | Pre-K-12, PG (day)
    Mühlentalstrasse 280CH-8200 Schaffhausen
    SchaffhausenSwitzerland 8200
    +41 52 624 17 07
  • 91.-101.Rank: #91-101
    15

    Grades: 9-12
    4391 County Rd. 29
    LakefieldCanada K0L2H0
    (705)652-3324
  • 91.-101.Rank: #91-101
    15

    Grades: 9-12
    1000 Green St.
    AtchisonKS 66002
    (913)367-5482
  • 91.-101.Rank: #91-101
    15

    Grades: 8-12 | 6-12 (day)
    290 Quintard Rd.
    SewaneeTN 37375
    (931)598-5651
  • 91.-101.Rank: #91-101
    15

    Grades: 7-12
    1600 St. Bernard Drive, S.E.
    CullmanAL 35055
    (256)255-5890
  • 91.-101.Rank: #91-101
    15

    Grades: 8-12, PG | Pre-K-12, PG (day)
    Coldharbour Lane
    Thorpe, Surrey TW20 8TEUnited Kingdom tw20 8te
    +44 1932 565252
  • 91.-101.Rank: #91-101
    15

    Grades: 9-12
    12096 N. Ventura Ave
    OjaiCA 93023
    (805)646-1464
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