Boarding School Review - Established 2003
Eagle Hill School
The Winchendon School
Grier School

Smallest Average Class Size

The average class size across the 92 ranked boarding schools with 200-400 students is 13 (2026-27).
Among boarding schools with 200-400 students, the one with the smallest average class size is Eagle Hill School, with 6.

Quick Facts (26-27)

  • # Schools with 200-400 Students Ranked: 92
  • Top 20 Range (Smallest Average Class Size): 6–11
  • Schools with 200-400 Students Avg.: 13
  • National Avg.: 13

Quick Facts (26-27)

  • # Schools with 200-400 Students Ranked: 92
  • Top 20 Range (Smallest Average Class Size): 6–11
  • Schools with 200-400 Students Avg.: 13
  • National Avg.: 13

National Average Class Size (Trends)

Showing 2016–2025. Full 12-year historical data available below ↓

Total Growth: +1.6% (+0.2 since 2016)

Year National avg YoY Change (#) YoY Change (%)
2025 12.8 — 0 — 0.0%
2024 12.8 ▲ +0.1 ▲ +0.8%
2023 12.7 ▲ +0.1 ▲ +0.8%
2022 12.6 ▲ +0.1 ▲ +0.8%
2021 12.5 ▲ +0.1 ▲ +0.8%
2020 12.4 ▼ -0.2 ▼ -1.6%
2019 12.6 ▼ -0.1 ▼ -0.8%
2018 12.7 ▲ +0.1 ▲ +0.8%
2017 12.6 — 0 — 0.0%
2016 12.6 — 0 — 0.0%
2015 12.6 — 0 — 0.0%
2014 12.6 — —
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Show school map — National (# Students range: 6–25, avg 13)
# Students Range: 6 25 Avg. # Students: 13

Smallest Average Class Size (2026-27)

Among Schools with 200-400 Students (out of 92 schools)

Sorted by range (alphabetically within range)
Eagle Hill School Photo - Eagle Hill School, located in the beautiful town of Hardwick, Massachusetts, is a traditional New England boarding school set on a 300-acre campus.
#1Eagle Hill School
Gr: 8-12
242 Old Petersham Road
Hardwick, MA 01037
(413) 477-6000
(2)
6# Students
View Profile
The Winchendon School Photo
#2The Winchendon School
Gr: 9-12, PG
172 Ash Street
Winchendon, MA 01475
(978) 297-4476
(2)
8# Students
View Profile
Grier School Photo
#3(T3–T5)Grier School
Gr: 7-12, PG | 5-12, PG (day)
All-girls
2522 Grier School Road
Birmingham, PA 16686
(814) 684-3000
(6)
9# Students
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Hoosac School Photo - Hoosac School was founded in 1889.
#3(T3–T5)Hoosac School
Gr: 8-12, PG
Episcopal
14 Pine Valley Road
Hoosick, NY 12089
(518) 686-7331
9# Students
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Woodberry Forest School Photo
#3(T3–T5)Woodberry Forest School
Gr: 9-12
All-boys (Non-denom. / Christian)
241 Woodberry Station
Woodberry Forest, VA 22989
(888) 798-9371
(2)
9# Students
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Cate School Photo - Day Walk
#6(T6–T14)Cate School
Gr: 9-12
1960 Cate Mesa Road, P.O. Box 5005
Carpinteria, CA 93013
(805) 684-4127
(20)
10# Students
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Cheshire Academy Photo - Our 104 acre (0.42 sq km) campus is in the center of the quiet, beautiful Town of Cheshire, CT. Though just a two hour drive to both Boston and New York, Cheshire is a quiet small town where students are in walking distance of a few area shops and cafes.
#6(T6–T14)Cheshire Academy
Gr: 9-12, PG
10 Main Street
Cheshire, CT 06410
(203) 439-7250
(5)
10# Students
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Kents Hill School Photo - Our idyllic, 400-acre campus is nestled in the midst of the Belgrade Lakes and provides sweeping views of the mountains of Maine and New Hampshire.
#6(T6–T14)Kents Hill School
Gr: 9-12, PG
PO Box 257, 1614 Main St., Rte. 17
Kents Hill, ME 04349
(207) 685-1606
(1)
10# Students
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La Garenne Photo - Le Roc, the main building of La Garenne International School in Chesires-Villars, Switzerland
#6(T6–T14)La Garenne
Gr: 1-12 | PK-12 (day)
Chemin des Chavasses 23
Chesières, Switzerland 1885
41244952453
10# Students
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Leysin American School in Switzerland (LAS) Photo - Set in the Swiss Alps, Leysin American School offers a remarkable campus surrounded by mountain views and opportunities for learning, adventure, and discovery.
#6(T6–T14)Leysin American School in Switzerland (LAS)
Gr: 7-12, PG
Chemin de la Source 3
Leysin, Switzerland 1854
0041244934872
10# Students
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New Hampton School Photo - Beautiful, 340-acre campus
#6(T6–T14)New Hampton School
Gr: 9-12, PG
70 Main Street
New Hampton, NH 03256
(603) 677-3401
(8)
10# Students
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Pomfret School Photo
#6(T6–T14)Pomfret School
Gr: 9-12, PG
PO Box 128, 398 Pomfret Street
Pomfret, CT 06258
(860) 963-6120
(10)
10# Students
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St. Andrew's School, DE Photo - St. Andrew's seminar style discussions, which include faculty and students seated at a central round table, are heard throughout English, history and language classes.
#6(T6–T14)St. Andrew's School, DE
Gr: 9-12
Episcopal
350 Noxontown Road
Middletown, DE 19709
(302) 285-4231
(13)
10# Students
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Trinity-Pawling School Photo - There are countless opportunities for students to develop leadership skills at Trinity-Pawling. Our community is intentionally designed to unleash the full potential of each student. Classes, clubs and activities, dorms, community service, and athletics are all venues for students to assume both official and unofficial positions of leadership, build their confidence, and become effective role models.
#6(T6–T14)Trinity-Pawling School
Gr: 8-12, PG | 7-12, PG (day)
All-boys (Episcopal)
700 Route 22
Pawling, NY 12564
(845) 855-4825
(1)
10# Students
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Brooks School Photo - Come visit our beautiful 251 acre campus located on the shores of Lake Cochichewick.
#15(T15–T24)Brooks School
Gr: 9-12
Episcopal
1160 Great Pond Road
North Andover, MA 01845
(978) 725-6272
(10)
11# Students
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Emma Willard School Photo
#15(T15–T24)Emma Willard School
Gr: 9-12, PG
All-girls
285 Pawling Avenue
Troy, NY 12180
(518) 833-1320
(9)
11# Students
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Gould Academy Photo - Gould offers amazing outdoor opportunities in the Mountains of Western Maine and at Sunday River, but at it's core Gould is a traditional New England Boarding School with remarkable faculty mentors.
#15(T15–T24)Gould Academy
Gr: 9-12, PG
39 Church Street
Bethel, ME 04217
(207) 824-7777
(2)
11# Students
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The Kiski School Photo - Beginning in 2024, Kiski will offer co-education, extending our outstanding opportunities and unique educational environment to both boys and girls.
#15(T15–T24)The Kiski School
Gr: 9-12, PG
1888 Brett Lane
Saltsburg, PA 15681
(724) 639-8035
11# Students
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The MacDuffie School Photo - Aerial view of MacDuffie's 250 acre campus
#15(T15–T24)The MacDuffie School
Gr: 6-12, PG
66 School Street
Granby, MA 01033
(413) 255-0000
(1)
11# Students
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Marine Military Academy Photo
#15(T15–T24)Marine Military Academy
Gr: 7-12, PG
All-boys
320 Iwo Jima Blvd
Harlingen, TX 78550
(956) 423-6006
(1)
11# Students
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Miss Hall's School Photo
#15(T15–T24)Miss Hall's School
Gr: 9-12, PG
All-girls
492 Holmes Road
Pittsfield, MA 01201
(413) 499-1300
(6)
11# Students
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Saint James School Photo - Founded in 1842, Saint James School is a coeducational, Episcopal boarding and day school for students in grades 8-12 located in Hagerstown, Maryland.
#15(T15–T24)Saint James School
Gr: 8-12
Episcopal
17641 College Road
Hagerstown, MD 21740
(301) 733-9330
11# Students
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The Thacher School Photo - In courses designed for intellectual and creative expansion, students and teachers meet in seminar circles, studios, and laboratories to create a learning environment that is vigorous and supportive, galvanizing and nurturing.
#15(T15–T24)The Thacher School
Gr: 9-12
5025 Thacher Road
Ojai, CA 93023
(805) 640-3210
(26)
11# Students
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The Webb School Photo
#15(T15–T24)The Webb School
Gr: 7-12 | 6-12 (day)
319 Webb Road East
Bell Buckle, TN 37020
(931) 389-6003
(10)
11# Students
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Applewild School Photo - The core values and core competencies we promote and the relationships we foster among all members of our diverse community prepare our students to be confident learners and engaged citizens.
#25(T25–T60)Applewild School
Gr: 4-9 | PK-9 (day)
120 Prospect Street
Fitchburg, MA 01420
(978) 342-6053
12# Students
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The Bement School Photo
#25(T25–T60)The Bement School
Gr: 3-9 | K-9 (day)
94 Old Main Street, PO Box 8
Deerfield, MA 01342
(413) 774-4209
12# Students
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Brewster Academy Photo - Brewster Academy is a private, coeducational boarding and day prep school in New Hampshire serving students in grades 912 and postgraduate. Known for its supportive community and team-based learning approach, Brewster prepares diverse thinkers for lives of purpose through rigorous academics, meaningful relationships, and opportunities that extend well beyond the classroom.
#25(T25–T60)Brewster Academy
Gr: 9-12, PG
80 Academy Drive
Wolfeboro, NH 03894
(603) 569-7200
(10)
12# Students
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The Calverton School Photo - Friendships are made across divisions at Calverton.
#25(T25–T60)The Calverton School
Gr: 8-12, PG | Pre-K-12, PG (day)
300 Calverton School Rd
Huntingtown, MD 20639
(410) 535-0216
12# Students
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Camden Military Academy Photo - A proud family!
#25(T25–T60)Camden Military Academy
Gr: 7-12, PG
All-boys
520 Hwy. 1 North
Camden, SC 29020
(803) 432-6001
(21)
12# Students
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Canterbury School Photo - At Canterbury School, a balanced educational experience integrates academic achievement, personal growth, and community engagement. As a welcoming interfaith community, Canterbury fosters a sense of belonging, providing passionate educators and transformative opportunities that guide you toward your fullest potential. This is what makes Canterbury School more than just a place to learn-it's a place to become your best self.
#25(T25–T60)Canterbury School
Gr: 9-12, PG
Catholic
101 Aspetuck Avenue
New Milford, CT 06776
(860) 210-3832
(1)
12# Students
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Cardigan Mountain School Photo
#25(T25–T60)Cardigan Mountain School
Gr: 6-9
All-boys
62 Alumni Drive
Canaan, NH 03741
(603) 523-3548
(2)
12# Students
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Christ School Photo
#25(T25–T60)Christ School
Gr: 8-12
All-boys (Episcopal)
500 Christ School Road
Asheville, NC 28704
(828) 684-6232
(1)
12# Students
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Cushing Academy Photo - Cushing Academy is located on a 162-acre campus in Ashburnham, Massachusetts
#25(T25–T60)Cushing Academy
Gr: 9-12, PG
39 School Street
Ashburnham, MA 01430
(978) 827-7300
(3)
12# Students
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Dunn School Photo - In 2020 the new Leadership Center was completed. Overlooking the open space known as Munger Common, the center provides state of the art meeting rooms and learning facilities, is home to the student-run Earwig Cafe, and hosts our college counseling team. Students can be found gathering both indoors and outside the center for conversation and relaxation.
#25(T25–T60)Dunn School
Gr: 9-12 | 6-12 (day)
P.O. Box 98, 2555 W. Highway 154
Los Olivos, CA 93441
(805) 686-0650
12# Students
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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.
#25(T25–T60)Fork Union Military Academy
Gr: 7-12, PG
All-boys (Baptist)
PO Box 278, 4744 James Madison Hwy
Fork Union, VA 23055
(434) 842-4205
(7)
12# Students
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Fountain Valley School of Colorado Photo - Fountain Valley School is a coed independent college preparatory school offering boarding and day programs for students grades 9-12. FVS was established in 1930 and is located on an 1,100-acre campus in Colorado Springs, Colo., approximately 70 miles (115 km) south of Denver. Colorado's mountain ski resorts are two hours to the west.
#25(T25–T60)Fountain Valley School of Colorado
Gr: 9-12 | 8-12 (day)
6155 Fountain Valley School Road
Colorado Springs, CO 80911
(719) 391-5251
(5)
12# Students
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The Frederick Gunn School Photo - The Frederick Gunn School, founded in 1850, is a co-ed boarding and day school for 350 students in grades 9-12 as well as a post-graduate year located in Washington, Connecticut.
#25(T25–T60)The Frederick Gunn School
Gr: 9-12, PG
99 Green Hill Road
Washington, CT 06793
(860) 868-7334
12# Students
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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.
#25(T25–T60)Holderness School
Gr: 9-12, PG
Episcopal
PO Box 1879
Plymouth, NH 03264
(603) 536-1747
(9)
12# Students
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Idyllwild Arts Academy Photo - Idyllwild Arts Academy is home to 280 students from over 30 countries and 27 US states, all devoted to intensive study of the arts. Named #1 High School for Arts in the nation by Niche in 2025.
#25(T25–T60)Idyllwild Arts Academy
Gr: 9-12, PG
52500 Temecula Road
Idyllwild, CA 92549
(951) 659-2171
(23)
12# Students
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Indian Mountain School Photo - Aerial View of IMS Upper Campus
#25(T25–T60)Indian Mountain School
Gr: 6-9 | PK-9 (day)
211 Indian Mountain Road
Lakeville, CT 06039
(435) 480-0871
12# Students
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Kimball Union Academy Photo
#25(T25–T60)Kimball Union Academy
Gr: 9-12, PG
7 Campus Center Drive
Meriden, NH 03770
(603) 469-2100
(6)
12# Students
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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.
#25(T25–T60)The Madeira School
Gr: 9-12, PG
All-girls
8328 Georgetown Pike
McLean, VA 22102
(703) 556-8273
(2)
12# Students
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Miss Porter's School Photo
#25(T25–T60)Miss Porter's School
Gr: 9-12
All-girls
60 Main Street
Farmington, CT 06032
(860) 409-3530
(6)
12# Students
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Ojai Valley School Photo - OVS offers an exceptional college-prep program. Recent college acceptances for our students include Stanford, Columbia, Northeastern, NYU, Boston College, UC Berkeley, UCLA, Pitzer College, Smith College, Vassar College, Cal Poly San Luis Obispo, and many more.
#25(T25–T60)Ojai Valley School
Gr: 3-12 | PK-12 (day)
723 El Paseo Road
Ojai, CA 93023
(805) 646-1423
(2)
12# Students
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Perkiomen School Photo - Innovation Center
#25(T25–T60)Perkiomen School
Gr: 6-12, PG
200 Seminary Street
Pennsburg, PA 18073
(215) 679-9511
(5)
12# Students
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Portsmouth Abbey School Photo
#25(T25–T60)Portsmouth Abbey School
Gr: 9-12
Catholic
285 Cory's Lane
Portsmouth, RI 02871
(401) 643-1248
(5)
12# Students
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Proctor Academy Photo - Students discover their sense of belonging on Proctor's beautiful New Hampshire campus, where our close-knit community helps each individual understand who they are and who they can become.
#25(T25–T60)Proctor Academy
Gr: 9-12, PG
204 Main Street - P.O. Box 500
Andover, NH 03216
(603) 735-6652
(12)
12# Students
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The Putney School Photo - The Putney School is located on a working dairy farm. We value the dignity and relevance of physical work, which shows through our Work Program. Students carry out daily chores, collaborate in teams, learn skills, and sometimes lead crews various areas: Barn, Kitchen, Land-Use, Dining & Maintenance.
#25(T25–T60)The Putney School
Gr: 9-12, PG
418 Houghton Brook Road
Putney, VT 05346
(802) 387-5566
(16)
12# Students
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Randolph-Macon Academy Photo
#25(T25–T60)Randolph-Macon Academy
Gr: 8-12, PG
United Methodist
200 Academy Drive
Front Royal, VA 22630
(540) 636-5484
(4)
12# Students
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Rectory School Photo - Being a member of a large, close-knit community lends itself to increased leadership skills, empathy, and understanding of one's self and those around them.
#25(T25–T60)Rectory School
Gr: 5-9 | K-9 (day)
P.O. Box 68 528 Pomfret Street
Pomfret, CT 06258
(860) 928-1328
(2)
12# Students
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Riverside Military Academy Photo
#25(T25–T60)Riverside Military Academy
Gr: 6-12
All-boys
2001 Riverside Drive
Gainesville, GA 30501
(678) 696-2116
(5)
12# Students
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Rumsey Hall School Photo
#25(T25–T60)Rumsey Hall School
Gr: 6-9 | PK-9 (day)
201 Romford Rd.
Washington, CT 06794
(860) 868-0535
12# Students
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St. John's Northwestern Academy Photo - Students walking through campus.
#25(T25–T60)St. John's Northwestern Academy
Gr: 7-12, PG
Episcopal
1101 Genesee Street
Delafield, WI 53018
(262) 646-7199
(4)
12# Students
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Salisbury School Photo
#25(T25–T60)Salisbury School
Gr: 9-12, PG
All-boys
251 Canaan Road
Salisbury, CT 06068
(860) 435-5732
(2)
12# Students
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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.
#25(T25–T60)Santa Catalina School
Gr: 9-12
All-girls (Catholic)
1500 Mark Thomas Drive
Monterey, CA 93940
(831) 655-9356
(1)
12# Students
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TASIS England Photo - TASIS England's beautiful 46-acre campus near London and Heathrow airport is well positioned for access to travel and the cultural riches of this vibrant capital.
#25(T25–T60)TASIS England
Gr: 8-12 | PK-12 (day)
Coldharbour Lane
Thorpe, Surrey TW20 8TE, United Kingdom TW20 8TE
441932565252
12# Students
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Tilton School Photo - Tilton School is an independent, coeducational, college preparatory school serving students from 9th to 12th grade and postgraduates. Tilton's student body of 220 consists of day students and boarding students from 19 states and 16 countries. Although the Tilton Experience is different for every student, it challenges all students to try new things, learn new skills, and try new things.
#25(T25–T60)Tilton School
Gr: 9-12, PG
30 School Street
Tilton, NH 03276
(603) 286-1733
(1)
12# Students
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Walnut Hill School for the Arts Photo
#25(T25–T60)Walnut Hill School for the Arts
Gr: 9-12, PG
12 Highland Street
Natick, MA 01760
(508) 650-5020
(3)
12# Students
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Washington Academy Photo - Washington Academy, established in 1792, is one of the oldest day & boarding co-ed high schools in the USA. It is located on the Downeast Maine coast, and boast 425 total students from 25 different countries. The Alumni Building is one of nine buildings on its 75+ acre campus.
#25(T25–T60)Washington Academy
Gr: 9-12, PG
PO Box 190, 66 Cutler Road
East Machias, ME 04630
(207) 255-8301
12# Students
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The Webb Schools Photo - Imagine learning from expert teachers, exploring paleontology in the Alf Museum, and heading to LA for concerts, sports, or museums-all while living near beaches, mountains, and desert. For more than 100 years, Webb has prepared and placed students at the nation's top colleges.
#25(T25–T60)The Webb Schools
Gr: 9-12
1175 West Baseline Road
Claremont, CA 91711
(909) 482-5214
(29)
12# Students
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Army and Navy Academy Photo - Our 16-acre campus is bordered by the Pacific Ocean in the northern San Diego coastal town of Carlsbad, CA. State-of-the-art athletic facilities support ANA's 17 different sports teams, plus surfing, beach volleyball, and ice hockey.
#61(T61–T66)Army and Navy Academy
Gr: 7-12
All-boys
2605 Carlsbad Blvd.
Carlsbad, CA 92008
(888) 762-2338
(5)
13# Students
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Asheville School Photo - Asheville School is for those who dare to be extraordinary. It is a privilege to learn and live at Asheville School, a small and special enclave among ancient mountains.
#61(T61–T66)Asheville School
Gr: 9-12
Non-denom. / Christian
360 Asheville School Rd.
Asheville, NC 28806
(828) 254-6345
(4)
13# Students
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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.
#61(T61–T66)Christchurch School
Gr: 9-12
Episcopal
49 Seahorse Lane
Christchurch, VA 23031
(804) 542-6843
(1)
13# Students
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Delphian School Photo - Delphian is located just one hour from Portland, OR. on a large 720 acre wooded campus. The residential community is in constant motion, alive with students from all around the world.
#61(T61–T66)Delphian School
Gr: 5-12 | PK-12 (day)
20950 SW Rock Creek Road
Sheridan, OR 97378
(503) 843-3521
(28)
13# Students
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Hillcrest Lutheran Academy Photo - Hillcrest started in 1916 out of the Bible school movement in America at the turn of the century. For the past 100 years Hillcrest has served families from nearly every continent and throughout the United States with a comprehensive boarding school program that disciples students and equips them for their next stages in life.
#61(T61–T66)Hillcrest Lutheran Academy
Gr: 10-12 | PK-12 (day)
Christian
610 Hillcrest Dr.
Fergus Falls, MN 56537
(218) 739-3371
(5)
13# Students
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Mount Michael Benedictine School Photo
#61(T61–T66)Mount Michael Benedictine School
Gr: 9-12
All-boys (Catholic)
22520 Mount Michael Road
Elkhorn, NE 68022
(402) 238-1457
13# Students
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The Cambridge School of Weston Photo - With over 200 courses to choose from, our dynamic curriculum allows students to balance engaging foundational courses with exploration and in-depth study as they choose from offerings like: "Multivariable Calculus," "The Biology of Cancer," "Wearable Art," "Japanese Women Writers," and "U.S. Cold War and Vietnam."
#67(T67–T70)The Cambridge School of Weston
Gr: 9-12, PG
45 Georgian Road
Weston, MA 02493
(781) 642-8650
(17)
14# Students
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CATS Academy Boston Photo - Adams Hall
#67(T67–T70)CATS Academy Boston
Gr: 8-12, PG
2001 Washington Street
Braintree, MA 02184
(857) 400-9700
(1)
14# Students
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Missouri Military Academy Photo - Established in 1889, Missouri Military Academy has transformed young men into leaders who are well-educated, prepared gentlemen of character. Our long history and distinct traditions inspire a sense of pride and duty among the young men who seek to fulfill their potential at MMA.
#67(T67–T70)Missouri Military Academy
Gr: 7-12, PG
All-boys (Non-denom. / Christian)
204 Grand Street
Mexico, MO 65265
(573) 581-1776
(7)
14# Students
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Saint Mary's School Photo - At Saint Mary's School, girls take center stage. We know girls and we know the all-girl learning environment at Saint Mary's School inspires girls to step outside their comfort zone, engage their minds, amplify their voices, and discover who they are and who they want to become!
#67(T67–T70)Saint Mary's School
Gr: 9-12
All-girls (Episcopal)
900 Hillsborough Street
Raleigh, NC 27603
(919) 424-4100
(1)
14# Students
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Albert College Photo - We are Canada's oldest co-ed boarding and day school, established in 1857. Our Senior School is a beautiful historic building, built in 1923.
#71(T71–T79)Albert College
Gr: 7-12 | PK-12 (day)
160 Dundas Street West
Belleville, Canada K8P 1A6
(613) 968-5726
(14)
15# Students
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Bishop's College School Photo - Our mission is simple: to create a caring community of learning and development where cultures connect and individuals matter. Our commitment to excellence in academics, wellness, athletics, creativity, and service contribute to a lifetime of engagement and global competence
#71(T71–T79)Bishop's College School
Gr: 7-12
80 chemin Moulton Hill
Sherbrooke, Quebec, Canada J1M 1Z8
(819) 566-0238
15# Students
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EF Academy New York Photo - Our campus is located an hour outside of New York City in the peaceful suburban community of Thornwood, New York.
#71(T71–T79)EF Academy New York
Gr: 9-12
582 Columbus Ave
Thornwood, NY 10594
(914) 495-6056
(2)
15# Students
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Hawaiʻi Preparatory Academy Photo
#71(T71–T79)Hawaiʻi Preparatory Academy
Gr: 9-12, PG | K-12, PG (day)
65-1692 Kohala Mountain Road
Kamuela, HI 96743
(808) 881-4321
(8)
15# Students
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Marianapolis Preparatory School Photo
#71(T71–T79)Marianapolis Preparatory School
Gr: 9-12, PG
Catholic
26 Chase Road
Thompson, CT
(860) 923-9565
(1)
15# Students
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St. Stephen's School Photo - St. Stephen's is in a historical palazzo in the very heart of ancient Rome
#71(T71–T79)St. Stephen's School
Gr: 9-12
Via Aventina 3
Rome, Italy 00153
39065750605
15# Students
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San Marcos Academy Photo - San Marcos Academy has offered a tradition of excellence in private, Christian education since 1907.
#71(T71–T79)San Marcos Academy
Gr: 6-12 | Pre-K-12 (day)
Baptist
2801 Ranch Road 12
San Marcos, TX 78666
(800) 428-5120
15# Students
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Westtown School Photo - Campus Photo
#71(T71–T79)Westtown School
Gr: 9-12 | PK-12 (day)
Quaker
975 Westtown Rd
West Chester, PA 19382
(610) 399-7900
(44)
15# Students
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Wilbraham & Monson Academy Photo
#71(T71–T79)Wilbraham & Monson Academy
Gr: 8-12, PG | 6-12, PG (day)
423 Main Street
Wilbraham, MA 01095
(413) 596-9107
(11)
15# Students
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Athol Murray College of Notre Dame Photo - Notre Dame provides an exceptional educational and boarding experience with a balance of strong academic, athletic and spiritual growth in a safe and caring prairie environment. Notre Dame has 90% of its students in boarding from 20 different countries across the world. The Notre Dame Brand is renowned across the world for its hockey program and has 15 different competitive
#80(T80–T92)Athol Murray College of Notre Dame
Gr: 9-12
PO Box 100
Wilcox, Canada S0G5E0
(306) 732-1203
>15# Students
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Ross School Photo
#80(T80–T92)Ross School
Gr: 6-12, PG | PK-12, PG (day)
18 Goodfriend Drive
East Hampton, NY 11937
(631) 907-5400
>15# Students
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Stanstead College Photo
#80(T80–T92)Stanstead College
Gr: 7-12, PG
450 Dufferein
Stanstead, Canada 05830
(819) 876-2223
(2)
>15# Students
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The International School of Schaffhausen Photo - The International School of Schaffhausen is located in the north of Switzerland, in the idyllic town of Schaffhausen. ISSH offers both the IB Diploma Programme and a High School Diploma Programme, with a focus on STEM subjects.
#80(T80–T92)The International School of Schaffhausen
Gr: 9-12 | PK-12 (day)
Mühlentalstrasse 280
Schaffhausen, Switzerland 8200
41526241707
>15# Students
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Saint Stanislaus High School Photo - We make the most of our location right on the Bay, developing unique programs, clubs, and activities for our students to enjoy. Our scuba and sailing clubs enjoy time in the water, while our environmental club focuses on care for our oceans, too.
#80(T80–T92)Saint Stanislaus High School
Gr: 7-12
All-boys (Catholic)
304 S. Beach Blvd.
Bay St. Louis, MS 39520
(228) 467-9057
>15# Students
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Bronte College Photo - Bronte College Students
#80(T80–T92)Bronte College
Gr: 9-12
88 Bronte College Court
Mississauga, Ontario, Canada L5B1M9
(905) 270-7788
(6)
>15# Students
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EF Academy Pasadena Photo - Hands-on learning encourages our students to make their own discoveries. Calculate velocity in the real world by measuring the speed of a baseball!
#80(T80–T92)EF Academy Pasadena
Gr: 9-12
1505 E Howard St.
Pasadena, CA 91104
(626) 507-9223
>15# Students
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Pickering College Photo - Independent Co-educational Day and Boarding School
#80(T80–T92)Pickering College
Gr: 9-12
16945 Bayview Ave
Newmarket, Ontario, Canada L3Y4X2
(905) 895-1700
(4)
>15# Students
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Riverstone International School Photo - Welcome to Riverstone International School! We look forward to welcoming you to our school in beautiful Boise, Idaho!
#80(T80–T92)Riverstone International School
Gr: 8-12 | PK-12 (day)
5521 East Warm Springs Avenue
Boise, ID 83716
(208) 424-5000
>15# Students
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Saint Bede Academy Photo - With an average student population of 300, our small class sizes offer students one-on-one interaction with their instructors.
#80(T80–T92)Saint Bede Academy
Gr: 9-12
Catholic
24 W US Highway 6
Peru, IL 61354
(815) 250-0285
>15# Students
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Saint John's Preparatory School Photo - We are located on 2900 of woodlands and lakes in Collegeville, MN
#80(T80–T92)Saint John's Preparatory School
Gr: 8-12, PG | 6-12, PG (day)
Catholic
2280 Watertower Road
Collegeville, MN 56321
(320) 363-3315
>15# Students
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SPIRE Academy Photo - Student-athletes train on a 725-acre campus with more than 800,000 square feet of indoor facilities, including an Olympic pool and a 300-meter indoor track. Coaches pair technical and tactical training with data from the SPIRE Performance Research Institute (SPRI), so every athlete trains with a plan and sees the progress.
#80(T80–T92)SPIRE Academy
Gr: 9-12, PG
5201 SPIRE Circle
Geneva, OH 44041
(440) 466-1002
>15# Students
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The Global College Photo - The Global College Building
#80(T80–T92)The Global College
Gr: 11-12
Calle Castellón de la Plana 8
Madrid, Spain 28006
0034915689937
>15# Students
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Frequently Asked Questions

Which boarding schools with 200-400 students have the smallest average class size?
The boarding schools with 200-400 students with the smallest average class size are Eagle Hill School, The Winchendon School and Grier School.
How many boarding schools with 200-400 students are ranked for the smallest average class size?
92 boarding schools with 200-400 students are ranked for the smallest average class size.

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Boarding School for an Only Child: Social Adjustment
Considering boarding school for an only child? Learn which questions to ask about roommates, friendships, privacy, adult support, and family communication before choosing a school that fits your child’s needs.

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Did You Know?

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.

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