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 (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)

Among Schools with 200-400 Students (out of 112 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.
    8
    Grades: 9-12, PG | 6-12, PG (day)
    63 Federal Road
    BarringtonRI 02806
    (401)246-1230
  • 4.-8.
    9
    Grades: 9-12
    1 High Street
    ChestertonUnited Kingdom CB4 1NQ
    01223314431
  • 4.-8.
    9

    Grades: 9-12, PG
    12 Norfolk Road, P.O. Box 80
    LitchfieldCT 06759
    (860)567-1802
  • 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.
    St. Timothy's School
    St. Timothy's School Photo - The Commons is equal parts living room and dining room. The newest building on campus, the Commons is a gathering space that houses the dining hall and the new Redlands Cafe.
    All-Girls  (Episcopal)
    9

    Grades: 9-12, PG
    8400 Greenspring Avenue
    StevensonMD 21153
    (410)486-7401
  • 4.-8.
    9

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

    Grades: 9-12, PG
    43-45 Bloomsbury Square
    LondonUnited Kingdom CB1 2JH
    2078411580
  • 9.-21.
    10

    Grades: 8-12 | 6-12 (day)
    P.O. Box 98, 2555 W. Highway 154
    Los OlivosCA 93441
    (800)287-9197
  • 9.-21.
    Eaglebrook School
    Eaglebrook School Photo - At the heart of the school is the shared life of teachers, their families, and boys working together. This is the common room of Halsted House, one of five dormitories on campus.
    All-Boys 
    10

    Grades: 6-9
    271 Pine Nook Road, P.O. Box 7
    DeerfieldMA 01342
    (413)774-9111
  • 9.-21.
    10

    Grades: 5-9 | Pre-K-9 (day)
    211 Indian Mountain Road
    LakevilleCT 06039
    (435)480-0871
  • 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.
    Miss Hall's School
    Miss Hall's School Photo - The Athletic Department at Miss Hall's instills in student-athletes the values of fitness, teamwork, and competition while inspiring each girl to master physical skills, envision her potential, strive to attain goals, build confidence, and experience the power of community pride.
    All-Girls 
    10

    Grades: 9-12, PG
    492 Holmes Road, PO Box 1166
    PittsfieldMA 01201
    (413)499-1300
  • 9.-21.
    10

    Grades: 9-12
    60 Main Street
    FarmingtonCT 06032
    (860)409-3530
  • 9.-21.
    10

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

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

    Grades: 7-12 | 6-12 (day)
    319 Webb Road East
    Bell BuckleTN 37020
    (931)389-6003
  • 22.-33.
    11
    Grades: 9-12, PG
    80 Academy Drive
    WolfeboroNH 03894
    (603)569-7200
  • 22.-33.
    Canterbury School
    Canterbury School Photo - Canterbury's student to teacher ratio is 11:1. The curriculum is extensive.
    (Catholic)
    11

    Grades: 9-12, PG
    101 Aspetuck Avenue
    New MilfordCT 06776
    (860)210-3832
  • 22.-33.
    Christ School
    Christ School Photo
    All-Boys  (Episcopal)
    11

    Grades: 8-12
    500 Christ School Road
    AshevilleNC 28704
    (828)684-6232
  • 22.-33.
    11

    Grades: 9-12, PG
    PO Box 860
    BethelME 04217
    (207)824-7777
  • 22.-33.
    11

    Grades: 9-12, PG
    PO Box 257, 1614 Main St., Rte. 17
    Kents HillME 04349
    (207)685-1606
  • 22.-33.
    11

    Grades: 6-12
    66 School Street
    GranbyMA 01033
    (413)255-0000
  • 22.-33.
    11

    Grades: 7-12, PG
    320 Iwo Jima Blvd
    HarlingenTX 78550
  • 22.-33.
    11

    Grades: 9-12, PG
    70 Main Street
    New HamptonNH 03256
    (603)677-3401
  • 22.-33.
    11

    Grades: 6-12, PG
    200 Seminary Street
    PennsburgPA 18073
    (215)679-9511
  • 22.-33.
    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.-33.
    11

    Grades: 9-12
    5025 Thacher Road
    OjaiCA 93023
    (805)640-3210
  • 22.-33.
    11

    Grades: 9-12
    400 VES Road
    LynchburgVA 24503
    (434)385-3607
  • 34.-71.
    12
    Grades: 9-12
    827 N. Tacoma Avenue
    TacomaWA 98403
    (253)284-8600
  • 34.-71.
    12

    Grades: 3-9 | K-9 (day)
    94 Old Main Street, PO Box 8
    DeerfieldMA 01342
    (413)774-4209
  • 34.-71.
    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
  • 34.-71.
    12

    Grades: 7-12, PG
    520 Hwy. 1 North
    CamdenSC 29020
    (800)948-6291
  • 34.-71.
    12

    Grades: 6-9
    62 Alumni Drive
    CanaanNH 03741
    (603)523-3548
  • 34.-71.
    12

    Grades: 9-12
    2001 Washington Street
    BraintreeMA 02184
    (857)400-9700
  • 34.-71.
    12

    Grades: 9-12, PG
    10 Main Street
    CheshireCT 06410
    (203)439-7250
  • 34.-71.
    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
  • 34.-71.
    12

    Grades: 9-12
    166 Main Street
    ConcordMA 01742
    (978)402-2250
  • 34.-71.
    12

    Grades: 9-12, PG
    39 School Street, P.O. Box 8000
    AshburnhamMA 01430
    (978)827-7300
  • 34.-71.
    12

    Grades: 8-12 | Pre-K-12 (day)
    8150 Oliver Rd.
    EriePA 16510
    (814)866-6979
  • 34.-71.
    12

    Grades: 9-12, PG | 6-12, PG (day)
    230 Bushy Hill Road
    SimsburyCT 06070
    (860)408-4200
  • 34.-71.
    12

    Grades: 9-12, PG | 5-12, PG (day)
    4800 139th Avenue SE
    BellevueWA 98006
    (425)641-0700
  • 34.-71.
    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
  • 34.-71.
    12

    Grades: 9-12
    6155 Fountain Valley School Road
    Colorado SpringsCO 80911
    (719)391-5251
  • 34.-71.
    Groton School
    (Episcopal)
    12

    Grades: 8-12
    282 Farmers Row, Box 991
    GrotonMA 01450
    (978)448-7510
  • 34.-71.
    12

    Grades: 6-12, PG
    339 Paris Road PO Box 309
    HebronME 04238
    (207)966-5225
  • 34.-71.
    Holderness School
    Holderness School Photo - Our alumni consistently tell us that our student run Job Program was formative for their future success, noting proudly that they were supervisors, event planners, and project managers before they even graduated high school.
    (Episcopal)
    12

    Grades: 9-12, PG
    PO Box 1879
    PlymouthNH 03264
    (603)536-1747
  • 34.-71.
    12

    Grades: 9-12, PG
    7 Campus Center, PO Box 188
    MeridenNH 03770
    (603)469-2100
  • 34.-71.
    12

    Grades: 9-12
    44 Main Street, PO Box 992
    GrotonMA 01450
    (978)448-1530
  • 34.-71.
    12

    Grades: 7-12, PG
    Chemin de la Source
    LeysinSwitzerland 1854
    0041244934888
  • 34.-71.
    The Madeira School
    The Madeira School Photo - Madeira's 376-acre campus in McLean, Virginia, overlooks the Potomac River from a perch just 12 miles northwest of Washington, D.C.
    All-Girls 
    12

    Grades: 9-12, PG
    8328 Georgetown Pike
    McLeanVA 22102-1200
    (703)556-8273
  • 34.-71.
    12

    Grades: 9-12, PG
    26 Chase Road
    ThompsonCT 06277
    (860)923-9245
  • 34.-71.
    12

    Grades: 3-12 | Pre-K-12 (day)
    723 El Paseo Road
    OjaiCA 93023
    (805)646-1423
  • 34.-71.
    12

    Grades: 9-12, PG
    PO Box 128, 398 Pomfret Street
    PomfretCT 06258
    (860)963-6120
  • 34.-71.
    12

    Grades: 9-12, PG
    204 Main Street - P.O. Box 500
    AndoverNH 03216
    (603)735-6652
  • 34.-71.
    12

    Grades: 9-12
    418 Houghton Brook Road
    PutneyVT 05346
    (802)387-6219
  • 34.-71.
    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
  • 34.-71.
    12

    Grades: 9-12
    350 Noxontown Road
    MiddletownDE 19709
    (302)285-4231
  • 34.-71.
    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
  • 34.-71.
    Salisbury School
    Salisbury School Photo - Salisbury School Dinning Hall
    All-Boys 
    12

    Grades: 9-12, PG
    251 Canaan Road
    SalisburyCT 06068
    (860)435-5732
  • 34.-71.
    12

    Grades: 9-12, PG | Pre-K-12, PG (day)
    6279 Hobbs Road
    SalisburyMD 21804
    (410)742-4464
  • 34.-71.
    12

    Grades: 6-12 | K-12 (day)
    2801 Ranch Road 12
    San MarcosTX 78666
    (800)428-5120
  • 34.-71.
    Santa Catalina School
    Santa Catalina School Photo - Volleyball in the Gym
    All-Girls  (Catholic)
    12

    Grades: 9-12
    1500 Mark Thomas Drive
    MontereyCA 93940
    (831)655-9356
  • 34.-71.
    12

    Grades: 9-12, PG
    30 School Street
    TiltonNH 03276
    (603)286-1733
  • 34.-71.
    Trinity-Pawling School
    Trinity-Pawling School Photo - We teach our art classes in a step-by-step manner-how to match pitch, to throw a pot, to draw a line. Even if you think you're not artistic, you'll build on these skills over time so you can develop your own creativity and awaken the artist in you.
    All-Boys  (Episcopal)
    12

    Grades: 8-12, PG | 7-12, PG (day)
    700 Route 22
    PawlingNY 12564
    (845)855-4825
  • 34.-71.
    12

    Grades: 8-12, PG
    120 South 100 West
    Mt. PleasantUT 84647
    (435)462-1400
  • 34.-71.
    12

    Grades: 9-12, PG
    995 Hopmeadow Street
    SimsburyCT 06070
    (860)408-3060
  • 72.-83.
    13
    Grades: 9-12
    360 Asheville School Rd.
    AshevilleNC 28806
    (828)254-6345
  • 72.-83.
    13

    Grades: 9-12
    EF House, Castle Road
    TorquayUnited Kingdom 13
    9144956028
  • 72.-83.
    13

    Grades: 9-12, PG
    52500 Temecula Road
    IdyllwildCA 92549
    (951)468-7223
  • 72.-83.
    The Kiski School
    The Kiski School Photo - The Swank Student Center
    All-Boys 
    13

    Grades: 9-12, PG
    1888 Brett Lane
    SaltsburgPA 15681
    (724)639-8035
  • 72.-83.
    13

    Grades: 9-12, PG
    131 Millbrook School Road
    MillbrookNY 12545
    (845)677-8261
  • 72.-83.
    13

    Grades: 9-12
    285 Cory's Lane
    PortsmouthRI 02871
    (401)643-1248
  • 72.-83.
    Saint Mary's School
    Saint Mary's School Photo - Saint Mary's School, established in 1842, is an independent, Episcopal, college-preparatory boarding and day school for girls in grades 9-12 in Raleigh, North Carolina. It is the fourth oldest girls' boarding/day school in the United States.
    All-Girls  (Episcopal)
    13

    Grades: 9-12
    900 Hillsborough Street
    RaleighNC 27603
    (919)424-4100
  • 72.-83.
    13

    Grades: 9-12, PG
    Via Aventina 3
    RomeItaly 00153
    0039065750605
  • 72.-83.
    13

    Grades: 7-12
    450 Dufferein
    StansteadCanada 05830
    (819)876-2223
  • 72.-83.
    13

    Grades: 9-12 | Pre-K-12 (day)
    1 Community School Drive
    Sun ValleyID 83353
    (208)622-3955
  • 72.-83.
    13

    Grades: 9-12, PG
    PO Box 190, 66 Cutler Road
    East MachiasME 04630
    (207)255-8301
  • 72.-83.
    13

    Grades: 9-12 | 6-12 (day)
    302 Portola Road
    Portola ValleyCA 94028
    (650)851-8223
  • 84.-86.
    14
    Grades: 9-12, PG
    45 Georgian Road
    WestonMA 02493
    (781)642-8650
  • 84.-86.
    14

    Grades: 7-12, PG
    204 Grand Street
    MexicoMO 65265
    (573)581-1776
  • 84.-86.
    Mount Michael Benedictine School
    Mount Michael Benedictine School Photo - Mount Michael Benedictine School
    All-Boys  (Catholic)
    14

    Grades: 9-12
    22520 Mount Michael Road
    ElkhornNE 68022
    (402)238-1457
  • 87.-100.
    15
    Grades: 7-12
    2605 Carlsbad Blvd.
    CarlsbadCA 92008
    (888)762-2338
  • 87.-100.
    15

    Grades: 7-12
    80 chemin Moulton Hill
    Sherbrooke, QuebecCanada J1M 1Z8
    (819)566-0238
  • 87.-100.
    15

    Grades: 9-12, PG | K-12, PG (day)
    65-1692 Kohala Mountain Road
    KamuelaHI 96743
    (808)881-4321
  • 87.-100.
    15

    Grades: 9-12
    610 Hillcrest Dr.
    Fergus FallsMN 56537
    (218)739-3371
  • 87.-100.
    15

    Grades: 11-12, PG | Pre-K-12, PG (day)
    Mühlentalstrasse 280CH-8200 Schaffhausen
    SchaffhausenSwitzerland 8200
  • 87.-100.
    15

    Grades: 9-12
    4391 County Rd. 29
    LakefieldCanada K0L2H0
    (705)652-3324
  • 87.-100.
    15

    Grades: 8-12, PG | Pre-K-12, PG (day)
    4910 Honoapiilani Hwy
    LahainaHI 96761
    (808)665-9966
  • 87.-100.
    15

    Grades: 9-12
    1000 Green St.
    AtchisonKS 66002
    (913)367-5482
  • 87.-100.
    15

    Grades: 8-12 | 6-12 (day)
    290 Quintard Rd.
    SewaneeTN 37375
    (931)598-5651
  • 87.-100.
    15

    Grades: 7-12
    1600 St. Bernard Drive, S.E.
    CullmanAL 35055
    (256)255-5890
  • 87.-100.
    15

    Grades: 7-12
    1101 Genesee Street
    DelafieldWI 53018
  • 87.-100.
    15

    Grades: 9-12, PG | Pre-K-12, PG (day)
    Coldharbour Lane
    Thorpe, Surrey TW20 8TEUnited Kingdom tw20 8te
    441932582316
  • 87.-100.
    15

    Grades: 7-12
    1001 Eagle Road
    WaynePA 19087
    (610)989-1200
  • 87.-100.
    Westtown School
    Westtown School Photo - Main building
    (Society of Friends)
    15

    Grades: 9-12 | Pre-K-12 (day)
    975 Westtown Rd
    West ChesterPA 19382
    (610)399-7900
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