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 (2019-20).
  • 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 (2019-20)

Sorted by range (alphabetically within range)
  • Boarding School # Students Grades Location
  • 1.Rank: #1
    3
    Grades: 9-12
    58 Harrison Lane
    BethlehemCT 06751
    (203)266-7788
  • 2.-3.Rank: #2-3
    4
    Grades: 6-12
    14 Greenwood Lane
    PutneyVT 05346
    (802)387-4545
  • 2.-3.Rank: #2-3
    4

    Grades: 3-12
    28 Patey Circle
    RindgeNH 03461
    (603)899-3325
  • 4.-7.Rank: #4-7
    5
    Grades: 5-12, PG | Pre-K-12, PG (day)
    54-230 Kamehameha Hwy
    HauulaHI 96717
    (808)670-1909
  • 4.-7.Rank: #4-7
    5

    Grades: 1-8
    128 Oakland Farm Way
    TroyVA 22974
    (434)293-9059
  • 4.-7.Rank: #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.Rank: #4-7
    5

    Grades: 6-12, PG
    93 Camp School Road
    WolfeboroNH 03894
    (603)569-3451
  • 8.-11.Rank: #8-11
    6
    Grades: 9-12, PG
    454 Academy Drive
    DurangoCO 81301
    (970)247-5898
  • 8.-11.Rank: #8-11
    6

    Grades: 8-12
    P.O. Box 116 , 242 Old Petersham Road
    HardwickMA 01037
    (413)477-6000
  • 8.-11.Rank: #8-11
    6

    Grades: 8-12, PG
    3042 College St.
    AustinburgOH 44010
    (440)275-2811
  • 8.-11.Rank: #8-11
    6

    Grades: 7-12, PG
    333 Ocean Road
    NarragansettRI 02882
    (401)788-0800
  • 12.-15.Rank: #12-15
    7
    Grades: 9-12
    6544 Murray Lane
    BrentwoodTN 37027
    (615)507-3173
  • 12.-15.Rank: #12-15
    7

    Grades: K-12 | Pre-K-12 (day)
    3846 N. Hwy. 144
    GranburyTX 76048
    (254)897-4822
  • 12.-15.Rank: #12-15
    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
  • 12.-15.Rank: #12-15
    The Phelps School
    The Phelps School Photo - Founded in 1946, The Phelps School is dedicated to the personalized education for the boy who seeks success academically, personally and socially. Our first obligation is to create a caring, sensitive climate which emphasizes the positive in every situation.
    All-Boys 
    7

    Grades: 6-12, PG
    583 Sugartown Road
    MalvernPA 19355
    (610)644-1754
  • 16.-40.Rank: #16-40
    8
    Grades: 7-12
    PO Box 388
    BalsamNC 28707
    (828)456-3435
  • 16.-40.Rank: #16-40
    Academy of the Holy Family
    Academy of the Holy Family Photo - April 2019 Retreat
    All-Girls  (Catholic)
    8

    Grades: 9-12
    54 W. Main Street Box 691
    BalticCT 06330
    (860)822-6279
  • 16.-40.Rank: #16-40
    8

    Grades: 9-12, PG
    345 South Figueroa Street
    Los AngelesCA 90071
    (213)400-4585
  • 16.-40.Rank: #16-40
    8

    Grades: 6-12, PG
    1701 Brandon Hall Drive
    AtlantaGA 30350
    (770)394-8177
  • 16.-40.Rank: #16-40
    8

    Grades: 9-12
    Slovenska 477/5
    Karlovy VaryCzech Republic 36001
    00420353227387
  • 16.-40.Rank: #16-40
    Chatham Hall
    Chatham Hall Photo - Whether you ve been riding your whole life or have always wanted to you can find a place in our program. The Chatham Hall campus is home to more than 30 horses, three teaching arenas, a permanent Hunter Trials course, and plenty of trails. We teach hunt seat the Modern Forward Riding System with an emphasis on horse and rider
    All-Girls  (Episcopal)
    8

    Grades: 9-12
    800 Chatham Hall Circle
    ChathamVA 24531
    (434)432-5516
  • 16.-40.Rank: #16-40
    8

    Grades: 8-12, PG
    Dorfstrasse
    6085 Hasliberg GoldernSwitzerland 6085
    14019968682
  • 16.-40.Rank: #16-40
    8

    Grades: 5-12
    1950 S. Academy Dr
    MelbourneFL 32901
    (321)723-3211
  • 16.-40.Rank: #16-40
    8

    Grades: 6-12, PG
    280 King Street East
    BrockvilleCanada K6V1E2
    (613)341-9330
  • 16.-40.Rank: #16-40
    8

    Grades: 9-12 | 2-12 (day)
    P.O. Box 227
    Prides CrossingMA 01965
    (978)236-3000
  • 16.-40.Rank: #16-40
    8

    Grades: 5-12, PG
    614 South Main Street
    WoodstockVA 22664
    (540)459-2167
  • 16.-40.Rank: #16-40
    8

    Grades: 4-9
    4382 Cascade Road
    Lake PlacidNY 12946
    (518)523-9329
  • 16.-40.Rank: #16-40
    8

    Grades: 9-12, PG
    W10085 Pike Plains Road
    DunbarWI 54119
    (715)324-6900
  • 16.-40.Rank: #16-40
    Oldfields School
    Oldfields School Photo - Our renowned equestrian program takes learning out of the classroom and into the barn.
    All-Girls 
    8

    Grades: 8-12
    1500 Glencoe Road
    Sparks GlencoeMD 21152
    (410)472-4800
  • 16.-40.Rank: #16-40
    8

    Grades: 9-12, PG
    1 Rock Point Road
    BurlingtonVT 05408
    (802)863-1104
  • 16.-40.Rank: #16-40
    8

    Grades: 9-12, PG | 6-12, PG (day)
    63 Federal Road
    BarringtonRI 02806
    (401)246-1230
  • 16.-40.Rank: #16-40
    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
  • 16.-40.Rank: #16-40
    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)
    8

    Grades: 9-12, PG
    8400 Greenspring Avenue
    StevensonMD 21153
    (410)486-7401
  • 16.-40.Rank: #16-40
    8

    Grades: 9-12, PG
    1951 Delta Avenue
    West BranchIA 52358
    (319)519-1856
  • 16.-40.Rank: #16-40
    8

    Grades: 6-12, PG
    1 Ames Hill Drive
    SpringfieldMA 01105
    (413)285-8976
  • 16.-40.Rank: #16-40
    8

    Grades: 9-12, PG
    235 Squaw Valley Road | P.O. Box 2667
    Olympic ValleyCA 96146
    (530)583-9393
  • 16.-40.Rank: #16-40
    8

    Grades: 9-12, PG
    42605 RCR 36
    Steamboat SpringsCO 80487
    (970)879-1350
  • 16.-40.Rank: #16-40
    8

    Grades: 6-9
    253 Bushy Hill Road
    IvorytonCT 06442
    (860)767-0848
  • 16.-40.Rank: #16-40
    8

    Grades: 6-12
    22000 Hwy 27
    Lake WalesFL 33859
    (863)676-6091
  • 16.-40.Rank: #16-40
    8

    Grades: 9-12, PG
    172 Ash Street
    WinchendonMA 01475
    (978)297-4476
  • 41.-54.Rank: #41-54
    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
  • 41.-54.Rank: #41-54
    9

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

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

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

    Grades: 9-12, PG
    12 Norfolk Road, P.O. Box 80
    LitchfieldCT 06759
    (860)567-1802
  • 41.-54.Rank: #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.Rank: #41-54
    Hoosac School
    Hoosac School Photo - Hoosac School rests on 350 rolling acres in the Northern Berkshires in New York. Hoosac believes that the individual student is the centerpiece of their education. We structure our academic programs to suit the strengths and passions of each student, helping them to reach their full potential.
    (Episcopal)
    9

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

    Grades: 8-12, PG
    1000 Samuel Miller Loop
    CharlottesvilleVA 22903
    (434)823-4805
  • 41.-54.Rank: #41-54
    9

    Grades: 8-12, PG
    1000 Orme School Road, H.C. 63, Box 3040
    MayerAZ 86333
    (928)632-7601
  • 41.-54.Rank: #41-54
    Purnell School
    Purnell School Photo - Ninth grade students work on creating their own Advice Blog during their Seminar Class. Their blog is a part of Purnell's award-winning Affinities Program.
    All-Girls 
    9

    Grades: 9-12, PG
    51 Pottersville Road, P.O. Box 500
    PottersvilleNJ 07979
    (908)439-4009
  • 41.-54.Rank: #41-54
    9

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

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

    Grades: 9-12, PG
    Suffield Academy
    SuffieldCT 06078
    (860)386-4440
  • 41.-54.Rank: #41-54
    9

    Grades: 9-12
    241 Woodberry Station
    Woodberry ForestVA 22989
    (888)798-9371
  • 55.-87.Rank: #55-87
    10
    Grades: 9-12, PG
    8585 Ojai Santa Paula Road
    OjaiCA 93023
    (805)646-4343
  • 55.-87.Rank: #55-87
    10

    Grades: 9-12
    1960 Cate Mesa Road, P.O. Box 5005
    CarpinteriaCA 93013
    (805)684-4127
  • 55.-87.Rank: #55-87
    10

    Grades: 9-12, PG
    43-45 Bloomsbury Square
    LondonUnited Kingdom CB1 2JH
    2078411580
  • 55.-87.Rank: #55-87
    10

    Grades: 9-12, PG
    785 Beaver Street
    WalthamMA 02452
    (781)314-0806
  • 55.-87.Rank: #55-87
    10

    Grades: 9-12, PG
    10 Main Street
    CheshireCT 06410
    (203)439-7250
  • 55.-87.Rank: #55-87
    10

    Grades: 9-12
    18 Lehmann Way, PO Box 522
    DublinNH 03444
    (603)563-7075
  • 55.-87.Rank: #55-87
    10

    Grades: 8-12 | 6-12 (day)
    P.O. Box 98, 2555 W. Highway 154
    Los OlivosCA 93441
    (800)287-9197
  • 55.-87.Rank: #55-87
    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
  • 55.-87.Rank: #55-87
    10

    Grades: 7-12
    225 S. Wayne Avenue
    WaynesboroVA 22980
    (540)946-7700
  • 55.-87.Rank: #55-87
    Foxcroft School
    Foxcroft School Photo - Foxcroft School House
    All-Girls 
    10

    Grades: 9-12, PG
    22407 Foxhound Lane
    MiddleburgVA 20117
    (540)687-4340
  • 55.-87.Rank: #55-87
    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
  • 55.-87.Rank: #55-87
    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.-87.Rank: #55-87
    10

    Grades: 5-9 | Pre-K-9 (day)
    211 Indian Mountain Road
    LakevilleCT 06039
    (435)480-0871
  • 55.-87.Rank: #55-87
    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.-87.Rank: #55-87
    Linden Hall School
    Linden Hall School Photo
    All-Girls 
    10

    Grades: 6-12, PG
    212 East Main Street
    LititzPA 17543
    (717)626-8512
  • 55.-87.Rank: #55-87
    10

    Grades: 9-12
    4 Lustre High Circle
    LustreMT 59225
    (406)392-5735
  • 55.-87.Rank: #55-87
    10

    Grades: 9-12, PG
    476 Skiff Mountain Road
    KentCT 06757
    (860)927-0047
  • 55.-87.Rank: #55-87
    10

    Grades: 9-12, PG
    118 Main Street East, Merrickville, Ontario
    MerrickvilleCanada K0G1N
    (613)269-2064
  • 55.-87.Rank: #55-87
    10

    Grades: 9-12
    PO Box 8
    Los OlivosCA 93441
    (805)688-5114
  • 55.-87.Rank: #55-87
    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
  • 55.-87.Rank: #55-87
    10

    Grades: 9-12
    60 Main Street
    FarmingtonCT 06032
    (860)409-3530
  • 55.-87.Rank: #55-87
    10

    Grades: 8-12
    78 Academy Avenue
    Cornwall-on-HudsonNY 12520
    (845)534-3710
  • 55.-87.Rank: #55-87
    10

    Grades: 9-12
    1500 Port Arthur Road
    LadysmithWI 54848
    (715)532-0201
  • 55.-87.Rank: #55-87
    10

    Grades: 9-12, PG
    92 Northwood Road
    Lake PlacidNY 12946
    (518)523-3382
  • 55.-87.Rank: #55-87
    Oak Hill Academy
    Oak Hill Academy Photo
    (Baptist)
    10

    Grades: 8-12
    2635 Oak Hill Road
    Mouth of WilsonVA 24363
    (276)579-2619
  • 55.-87.Rank: #55-87
    10

    Grades: 5-9 | Pre-K-9 (day)
    P.O. Box 68 528 Pomfret Street
    PomfretCT 06258
    (860)928-1328
  • 55.-87.Rank: #55-87
    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.-87.Rank: #55-87
    St. Margaret's School
    St. Margaret's School Photo - BELIEVE IN SOMETHING GREATER. * What kind of person will you be? Honest? Trustworthy? Responsible? * Our honor code inspires a culture of honesty and promotes trust in one another. * We have confidence that you will do the right thing, even when no one is watching. * We believe in you.
    All-Girls  (Episcopal)
    10

    Grades: 8-12, PG
    PO Box 158, 444 Water Lane
    TappahannockVA 22560
    (804)443-3357
  • 55.-87.Rank: #55-87
    10

    Grades: 9-12, PG
    6832 Phillips Mill Road
    New HopePA 18938
    (215)862-5261
  • 55.-87.Rank: #55-87
    10

    Grades: 8-12, PG
    314 Mountain Road
    Cornwall on HudsonNY 12520
    (845)458-7542
  • 55.-87.Rank: #55-87
    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
  • 55.-87.Rank: #55-87
    10

    Grades: 9-12, PG
    10 Long Walk
    Saxtons RiverVT 05154
    (802)869-6229
  • 55.-87.Rank: #55-87
    10

    Grades: 9-12, PG
    371 West Farm Road
    BethlehemNH 03574
    (603)444-2928
  • 88.-106.Rank: #88-106
    11
    Grades: 9-12, PG
    500 Old Farms Road
    AvonCT 06001
    (800)464-2866
  • 88.-106.Rank: #88-106
    11

    Grades: 9-12, PG
    80 Academy Drive
    WolfeboroNH 03894
    (603)569-7200
  • 88.-106.Rank: #88-106
    Buffalo Seminary
    Buffalo Seminary Photo - Our one-to-one tablet computer program gives each girl instant access to a wealth of information.
    All-Girls 
    11

    Grades: 9-12, PG
    205 Bidwell Parkway
    BuffaloNY 14222
    (716)885-6780
  • 88.-106.Rank: #88-106
    Christ School
    Christ School Photo
    All-Boys  (Episcopal)
    11

    Grades: 8-12
    500 Christ School Road
    AshevilleNC 28704
    (828)684-6232
  • 88.-106.Rank: #88-106
    11

    Grades: 9-12
    1200 N. Quaker Lane
    AlexandriaVA 22302
    (877)933-4347
  • 88.-106.Rank: #88-106
    11

    Grades: 9-12, PG
    PO Box 860
    BethelME 04217
    (207)824-7777
  • 88.-106.Rank: #88-106
    11

    Grades: 9-12
    1 Elm Street
    ByfieldMA 01922
    (978)499-3120
  • 88.-106.Rank: #88-106
    11

    Grades: 9-12, PG
    PO Box 257, 1614 Main St., Rte. 17
    Kents HillME 04349
    (207)685-1606
  • 88.-106.Rank: #88-106
    11

    Grades: 6-12, PG
    66 School Street
    GranbyMA 01033
    (413)255-0000
  • 88.-106.Rank: #88-106
    11

    Grades: 7-12, PG
    320 Iwo Jima Blvd
    HarlingenTX 78550
  • 88.-106.Rank: #88-106
    11

    Grades: 9-12, PG
    70 Main Street
    New HamptonNH 03256
    (603)677-3401
  • 88.-106.Rank: #88-106
    11

    Grades: 8-12 | Pre-K-12 (day)
    4254 Colonial Avenue
    RoanokeVA 24018
    (540)989-6641
  • 88.-106.Rank: #88-106
    11

    Grades: 9-12, PG
    One Lamplighter Way
    Mount HermonMA 01354
    (413)498-3227
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