Boarding School Review - Established 2003
Middlebridge School
La Garenne
Oliverian School

Lowest Student-Teacher Ratio

The average student-teacher ratio across the 266 ranked boarding schools is 8:1 (2026-27).
The boarding school with the lowest student-teacher ratio is Middlebridge School, with 1:1.

Quick Facts (26-27)

  • # Boarding Schools Ranked: 266
  • Top 20 Range (Student-Teacher Ratio): 1:1–4:1
  • National Avg.: 8:1

Quick Facts (26-27)

  • # Boarding Schools Ranked: 266
  • Top 20 Range (Student-Teacher Ratio): 1:1–4:1
  • National Avg.: 8:1

National Average Student-Teacher Ratio (Trends)

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

Total Growth: +4.1% (+0.3 since 2016)

Year National avg YoY Change (#) YoY Change (%)
2025 7.6 ▲ +0.2 ▲ +2.7%
2024 7.4 ▲ +0.1 ▲ +1.4%
2023 7.3 ▲ +0.1 ▲ +1.4%
2022 7.2 ▲ +0.1 ▲ +1.4%
2021 7.1 — 0 — 0.0%
2020 7.1 ▼ -0.2 ▼ -2.7%
2019 7.3 — 0 — 0.0%
2018 7.3 — 0 — 0.0%
2017 7.3 — 0 — 0.0%
2016 7.3 ▼ -0.1 ▼ -1.4%
2015 7.4 ▼ -0.1 ▼ -1.3%
2014 7.5 — —
Download Table: Download as CSV | Download as XML | Download as JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

Show school map — National (S:T Ratio range: 1:1–22:1, avg 8:1)
S:T Ratio Range: 1:1 22:1 Avg. S:T Ratio: 8:1

Lowest Student-Teacher Ratio (2026-27)

Sorted by range (alphabetically within range)
Middlebridge School Photo
#1Middlebridge School
Gr: 9-12, PG
333 Ocean Road
Narragansett, RI 02882
(401) 788-0800
1:1S:T Ratio
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La Garenne Photo - Le Roc, the main building of La Garenne International School in Chesires-Villars, Switzerland
#2(T2–T3)La Garenne
Gr: 1-12 | PK-12 (day)
Chemin des Chavasses 23
Chesières, Switzerland 1885
41244952453
2:1S:T Ratio
View Profile
Oliverian School Photo - Aerial view of the Oliverian campus. The Meeting House, main Academic Building, and Mackinnon/Student Center can be seen.
#2(T2–T3)Oliverian School
Gr: 9-12, PG
28 Becket Drive, #385
Pike, NH 03780
(888) 922-5565
2:1S:T Ratio
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Map of Buxton School
#4(T4–T8)Buxton School
Gr: 9-12, PG
291 South Street
Williamstown, MA 01267
(413) 458-3919
(4)
3:1S:T Ratio
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Landmark School Photo - Landmark's beautiful coastal campus just 30 miles from Boston.
#4(T4–T8)Landmark School
Gr: 9-12 | 2-12 (day)
429 Hale Street
Prides Crossing, MA 01965
(978) 236-3000
(2)
3:1S:T Ratio
View Profile
The Leelanau School Photo
#4(T4–T8)The Leelanau School
Gr: 9-12
1 Old Homestead Road
Glen Arbor, MI 49636
(231) 334-5800
3:1S:T Ratio
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North Country School Photo - Through a variety or teaching methods, hands-on projects, and innovative uses of technology, North Country School students acquire critical academic skills in the humanities, math, sciences and the arts. NCS has high expectations for students, and the school also recognizes that all children learn differently. Each child is challenged according to their ability.
#4(T4–T8)North Country School
Gr: 4-9
4382 Cascade Road
Lake Placid, NY 12946
(518) 523-9329
3:1S:T Ratio
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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.
#4(T4–T8)The Putney School
Gr: 9-12, PG
418 Houghton Brook Road
Putney, VT 05346
(802) 387-5566
(16)
3:1S:T Ratio
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Academy of the Holy Family Photo - Ambassadors Club
#9(T9–T31)Academy of the Holy Family
Gr: 9-12
All-girls (Catholic)
54 W. Main Street Box 691
Baltic, CT 06330
(860) 822-6279
4:1S:T Ratio
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Besant Hill School Photo - Besant Hill School is located in the Ojai Valley, on 500 acres of private land with beautiful vistas in every direction. Facilities include four dormitories, outdoor sports facilities including a new aquatic center, indoor theater, atelier, and classrooms nestled along winding paths and oak trees. We also have an eight acre organic farm.
#9(T9–T31)Besant Hill School
Gr: 9-12, PG
8585 Ojai Santa Paula Road
Ojai, CA 93023
(805) 646-4343
(1)
4:1S:T Ratio
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Bridgton Academy Photo
#9(T9–T31)Bridgton Academy
Gr: 12-12, PG
All-boys
11 Academy Lane
North Bridgton, ME 04057
(207) 647-3322
4:1S:T Ratio
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Cardigan Mountain School Photo
#9(T9–T31)Cardigan Mountain School
Gr: 6-9
All-boys
62 Alumni Drive
Canaan, NH 03741
(603) 523-3548
(2)
4:1S:T Ratio
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Deerfield Academy Photo
#9(T9–T31)Deerfield Academy
Gr: 9-12, PG
7 Boyden Lane
Deerfield, MA 01342
(413) 774-1400
(14)
4:1S:T Ratio
View Profile
Ecole d'Humanité Photo
#9(T9–T31)Ecole d'Humanité
Gr: 8-12, PG
Gmeindi 318b
Hasliberg Goldern, Switzerland 6085
41339729292
4:1S:T Ratio
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Forman School Photo - The Forman Green is at the center of campus life. Surrounded by dorms and faculty homes, it reflects the traditional charm of an historic New England community.
#9(T9–T31)Forman School
Gr: 9-12, PG
12 Norfolk Road, P.O. Box 80
Litchfield, CT 06759
(860) 567-1802
(6)
4:1S:T Ratio
View Profile
The Gow School Photo
#9(T9–T31)The Gow School
Gr: 5-12, PG
2491 Emery Road
South Wales, NY 14139
(716) 687-2001
4:1S:T Ratio
View Profile
IMG Academy Photo - IMG Academy's Academic Center is in the hear of campus and offers classes, resources, and college placement support to each student-athlete.
#9(T9–T31)IMG Academy
Gr: 6-12, PG
5650 Bollettieri Blvd
Bradenton, FL 34210
(800) 872-6425
(7)
4:1S:T Ratio
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Indian Mountain School Photo - Aerial View of IMS Upper Campus
#9(T9–T31)Indian Mountain School
Gr: 6-9 | PK-9 (day)
211 Indian Mountain Road
Lakeville, CT 06039
(435) 480-0871
4:1S:T Ratio
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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.
#9(T9–T31)Leysin American School in Switzerland (LAS)
Gr: 7-12, PG
Chemin de la Source 3
Leysin, Switzerland 1854
0041244934872
4:1S:T Ratio
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Loomis Chaffee Photo - Loomis` beautiful 300-acre campus is located at the confluence of the Farmington and Connecticut rivers in Windsor, Connecticut. Affectionately referred to as the Island, Loomis is within walking distance of the town`s center, Amtrak train station, and other areas of interest.
#9(T9–T31)Loomis Chaffee
Gr: 9-12, PG
4 Batchelder Road
Windsor, CT 06095
(860) 687-6400
(30)
4:1S:T Ratio
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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.
#9(T9–T31)The Madeira School
Gr: 9-12, PG
All-girls
8328 Georgetown Pike
McLean, VA 22102
(703) 556-8273
(2)
4:1S:T Ratio
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Marvelwood School Photo - We offer a wide variety of competitive athletics each season.
#9(T9–T31)Marvelwood School
Gr: 9-12, PG
476 Skiff Mountain Road
Kent, CT 06757
(860) 927-0047
4:1S:T Ratio
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Mercersburg Academy Photo
#9(T9–T31)Mercersburg Academy
Gr: 9-12, PG
100 Academy Drive
Mercersburg, PA 17236
(717) 328-6173
(20)
4:1S:T Ratio
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Middlesex School Photo - English Class
#9(T9–T31)Middlesex School
Gr: 9-12
1400 Lowell Road
Concord, MA 01742
(978) 371-6524
(28)
4:1S:T Ratio
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Milton Academy Photo - Milton Academy is only eight miles from Boston's museums, schools and attractions, but it has the benefits of a 130-acre New England campus-with green quads and lots of fall foliage.
#9(T9–T31)Milton Academy
Gr: 9-12 | K-12 (day)
170 Centre Street
Milton, MA 02186
(617) 898-2227
(8)
4:1S:T Ratio
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New Summit Academy Costa Rica Photo - Our location in Costa Rica is no accident. Costa Rica is an experiential learner's paradise.
#9(T9–T31)New Summit Academy Costa Rica
Gr: 9-12, PG
All-boys
Alajuela Province, Nueva Cumbre
Atenas, Costa Rica 20501
18006099496
4:1S:T Ratio
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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.
#9(T9–T31)Proctor Academy
Gr: 9-12, PG
204 Main Street - P.O. Box 500
Andover, NH 03216
(603) 735-6652
(12)
4:1S:T Ratio
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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.
#9(T9–T31)St. Andrew's School, DE
Gr: 9-12
Episcopal
350 Noxontown Road
Middletown, DE 19709
(302) 285-4231
(13)
4:1S:T Ratio
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The Taft School Photo - Our beautiful campus features facilities that rival those of many small colleges, including a library with 55,000 print volumes; a 45,000 square foot science and mathematics building; two theaters; two ice hockey rinks; and an 18-hole golf course.
#9(T9–T31)The Taft School
Gr: 9-12, PG
110 Woodbury Road
Watertown, CT 06795
(860) 945-7700
(3)
4:1S:T Ratio
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THINK Global School Photo - THINK Global School is comprised of 30 high school students who hail from all over the world. It's an opportunity to live next to and learn from a truly global student body.
#9(T9–T31)THINK Global School
Gr: 11-12
1460 Broadway Street #4027
New York, NY 10036
(646) 768-0302
4:1S:T Ratio
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Westover School Photo
#9(T9–T31)Westover School
Gr: 9-12, PG
All-girls
1237 Whittemore Rd.
Middlebury, CT 06762
(203) 577-4521
(12)
4:1S:T Ratio
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Brooks School Photo - Come visit our beautiful 251 acre campus located on the shores of Lake Cochichewick.
#32(T32–T66)Brooks School
Gr: 9-12
Episcopal
1160 Great Pond Road
North Andover, MA 01845
(978) 725-6272
(10)
5:1S:T Ratio
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Cate School Photo - Day Walk
#32(T32–T66)Cate School
Gr: 9-12
1960 Cate Mesa Road, P.O. Box 5005
Carpinteria, CA 93013
(805) 684-4127
(20)
5:1S:T Ratio
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Chapel Hill-Chauncy Hall Photo
#32(T32–T66)Chapel Hill-Chauncy Hall
Gr: 9-12, PG | 8-12, PG (day)
785 Beaver Street
Waltham, MA 02452
(781) 314-0804
5:1S:T Ratio
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Chatham Hall Photo - Our students thrive in a dynamic environment designed specifically for their success.
#32(T32–T66)Chatham Hall
Gr: 9-12
All-girls (Episcopal)
800 Chatham Hall Circle
Chatham, VA 24531
(434) 432-5516
(5)
5:1S:T Ratio
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Colorado Rocky Mountain School Photo - With 174 students, relationships are at the core of the Colorado Rocky Mountain School experience. This close-knit community resides on a 320-acre historic ranch, at the confluence of two rivers and base of Mount Sopris, providing not only an outdoor learning laboratory but a launch point for boundless outdoor adventure.
#32(T32–T66)Colorado Rocky Mountain School
Gr: 9-12
500 Holden Way
Carbondale, CO 81623
(970) 963-2562
(8)
5:1S:T Ratio
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Currey Ingram Academy Photo - Aerial view of Currey Ingram's 83-acre campus.
#32(T32–T66)Currey Ingram Academy
Gr: 9-12, PG | PK-12, PG (day)
6544 Murray Lane
Brentwood, TN 37027
(615) 507-3173
5:1S:T Ratio
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Dublin School Photo - There`s dramatic beauty that is apparent on your first visit to Dublin. Surrounded by unspoiled forests, pristine lakes and Mt. Monadnock - the most climbed mountain in the world, our 500-acre campus supports a vibrant and supportive community of scholars, artists and athletes.
#32(T32–T66)Dublin School
Gr: 9-12
18 Lehmann Way, PO Box 522
Dublin, NH 03444
(603) 563-7075
(1)
5:1S:T Ratio
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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.
#32(T32–T66)Dunn School
Gr: 9-12 | 6-12 (day)
P.O. Box 98, 2555 W. Highway 154
Los Olivos, CA 93441
(805) 686-0650
5:1S:T Ratio
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Episcopal High School Photo - EHS
#32(T32–T66)Episcopal High School
Gr: 9-12
Episcopal
1200 N. Quaker Lane
Alexandria, VA 22302
(703) 933-4062
(12)
5:1S:T Ratio
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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.
#32(T32–T66)Fountain Valley School of Colorado
Gr: 9-12 | 8-12 (day)
6155 Fountain Valley School Road
Colorado Springs, CO 80911
(719) 391-5251
(5)
5:1S:T Ratio
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Foxcroft School Photo - Schoolhouse
#32(T32–T66)Foxcroft School
Gr: 9-12, PG
All-girls
22407 Foxhound Lane
Middleburg, VA 20117
(540) 687-4340
(9)
5:1S:T Ratio
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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.
#32(T32–T66)The Frederick Gunn School
Gr: 9-12, PG
99 Green Hill Road
Washington, CT 06793
(860) 868-7334
5:1S:T Ratio
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The Global College Photo - The Global College Building
#32(T32–T66)The Global College
Gr: 11-12
Calle Castellón de la Plana 8
Madrid, Spain 28006
0034915689937
5:1S:T Ratio
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The Governor's Academy (formerly Governor Dummer Academy) Photo - Beautiful Setting: A 456-acre campus with extensive facilities for academics, athletics, and visual and performing arts.
#32(T32–T66)The Governor's Academy (formerly Governor Dummer Academy)
Gr: 9-12
1 Elm Street
Byfield, MA 01922
(978) 499-3120
(8)
5:1S:T Ratio
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Harrow International School New York Photo - Harrow New York is located outside of New York City on a historic 170 acre waterfront campus.
#32(T32–T66)Harrow International School New York
Gr: 6-12
500 Montauk Highway
Oakdale, NY 11769
(631) 869-1572
5:1S:T Ratio
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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.
#32(T32–T66)Idyllwild Arts Academy
Gr: 9-12, PG
52500 Temecula Road
Idyllwild, CA 92549
(951) 659-2171
(23)
5:1S:T Ratio
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Kent School Photo
#32(T32–T66)Kent School
Gr: 9-12, PG
Episcopal
1 Macedonia Road
Kent, CT 06757
(860) 927-6111
(1)
5:1S:T Ratio
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Lawrence Academy Photo
#32(T32–T66)Lawrence Academy
Gr: 9-12
26 Powderhouse Road, P.O. Box 992
Groton, MA 01450
(978) 448-1530
(1)
5:1S:T Ratio
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Linden Hall School for Girls Photo
#32(T32–T66)Linden Hall School for Girls
Gr: 6-12, PG
All-girls
212 E Main Street
Lititz, PA 17543
(717) 626-8512
5:1S:T Ratio
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Maharishi School Photo
#32(T32–T66)Maharishi School
Gr: 9-12 | PK-12 (day)
804 Dr Robert K Wallace Drive
Fairfield, IA 52556
(641) 472-9400
(2)
5:1S:T Ratio
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New England Innovation Academy Photo
#32(T32–T66)New England Innovation Academy
Gr: 7-12, PG
280 Locke Drive
Marlborough, MA 01752
(508) 205-4270
5:1S:T Ratio
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New Hampton School Photo - Beautiful, 340-acre campus
#32(T32–T66)New Hampton School
Gr: 9-12, PG
70 Main Street
New Hampton, NH 03256
(603) 677-3401
(8)
5:1S:T Ratio
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New York Military Academy Photo - New York Military Academy, established in 1889 in Cornwall-on-Hudson, New York, is a private, international boarding school serving grades 7 through 12. NYMA is dedicated to a comprehensive and substantive process of developing young leaders who are `Set Apart for Excellence`. Our goal is to prepare our cadets for success and fulfillment in college and in life.
#32(T32–T66)New York Military Academy
Gr: 9-12, PG
78 Academy Ave.
Cornwall-on-Hudson, NY 12520
(845) 618-7335
(2)
5:1S:T Ratio
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Oakwood Friends School Photo - Autumn colors on campus
#32(T32–T66)Oakwood Friends School
Gr: 9-12 | 6-12 (day)
Quaker
22 Spackenkill Road
Poughkeepsie, NY 12603
(845) 462-4200
5:1S:T Ratio
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Oldfields School Photo - Oldfields School`s Mission is to embrace each student`s authentic self, educate through collaboration, empower the individual voice, and inspire confidence and continual growth, leading to a life of purpose.
#32(T32–T66)Oldfields School
Gr: 8-12, PG
All-girls
1500 Glencoe Road
Sparks Glencoe, MD 21152
(443) 662-1009
(13)
5:1S:T Ratio
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Pillsbury College Prep Photo
#32(T32–T66)Pillsbury College Prep
Gr: 6-12
315 South Grove Avenue
Owatonna, MN 55060
(507) 214-2200
5:1S:T Ratio
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Portsmouth Abbey School Photo
#32(T32–T66)Portsmouth Abbey School
Gr: 9-12
Catholic
285 Cory's Lane
Portsmouth, RI 02871
(401) 643-1248
(5)
5:1S:T Ratio
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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.
#32(T32–T66)Rectory School
Gr: 5-9 | K-9 (day)
P.O. Box 68 528 Pomfret Street
Pomfret, CT 06258
(860) 928-1328
(2)
5:1S:T Ratio
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Rock Point School Photo - Engaged learning with hands-on teachers.
#32(T32–T66)Rock Point School
Gr: 9-12, PG
1 Rock Point Road
Burlington, VT 05408
(802) 863-1104
5:1S:T Ratio
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St. Paul's School Photo
#32(T32–T66)St. Paul's School
Gr: 9-12
Episcopal
325 Pleasant Street
Concord, NH 03301
(603) 229-4700
(4)
5:1S:T Ratio
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St. Thomas More School Photo - Beautiful rural campus located in Eastern Connecticut - just 2.5 hours from NYC.
#32(T32–T66)St. Thomas More School
Gr: 8-12, PG
45 Cottage Road
Oakdale, CT 06370
(860) 823-3861
5:1S:T Ratio
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Salisbury School Photo
#32(T32–T66)Salisbury School
Gr: 9-12, PG
All-boys
251 Canaan Road
Salisbury, CT 06068
(860) 435-5732
(2)
5:1S:T Ratio
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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.
#32(T32–T66)Trinity-Pawling School
Gr: 8-12, PG | 7-12, PG (day)
All-boys (Episcopal)
700 Route 22
Pawling, NY 12564
(845) 855-4825
(1)
5:1S:T Ratio
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Westminster School Photo - Gund Reading Room in the Cole Library, a stunning place to study, meet and hold events.
#32(T32–T66)Westminster School
Gr: 9-12, PG
995 Hopmeadow Street
Simsbury, CT 06070
(860) 408-3060
(10)
5:1S:T Ratio
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Wolfeboro Camp School Photo - A transformative summer program. Academic growth and summer camp fun!
#32(T32–T66)Wolfeboro Camp School
Gr: 5-12, PG
93 Camp School Road
Wolfeboro, NH 03894
(603) 569-3451
(1)
5:1S:T Ratio
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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.
#67(T67–T122)Applewild School
Gr: 4-9 | PK-9 (day)
120 Prospect Street
Fitchburg, MA 01420
(978) 342-6053
6:1S:T Ratio
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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.
#67(T67–T122)Asheville School
Gr: 9-12
Non-denom. / Christian
360 Asheville School Rd.
Asheville, NC 28806
(828) 254-6345
(4)
6:1S:T Ratio
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Avon Old Farms School Photo - Nestled among Cotswold-inspired architecture on 860 acres in the Farmington Valley, Avon Old Farms stands as the leader in preparing boys to become men.
#67(T67–T122)Avon Old Farms School
Gr: 9-12, PG
All-boys
500 Old Farms Road
Avon, CT 06001
(800) 464-2866
(6)
6:1S:T Ratio
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The Bement School Photo
#67(T67–T122)The Bement School
Gr: 3-9 | K-9 (day)
94 Old Main Street, PO Box 8
Deerfield, MA 01342
(413) 774-4209
6:1S:T Ratio
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Blair Academy Photo
#67(T67–T122)Blair Academy
Gr: 9-12, PG
2 Park St
Blairstown, NJ 07825
(908) 362-2009
(9)
6:1S:T Ratio
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Blue Ridge School Photo - Our beautiful 750 acre campus is nestled in the Blue Ridge Mountains, a lovely 30 minute drive from Charlottesville Virginia. We take full advantage our location to help boys channel their energy, hone their leadership skills, foster respect for the environment, enhance their self esteem, and learn the value of teamwork.
#67(T67–T122)Blue Ridge School
Gr: 9-12
All-boys (Episcopal)
273 Mayo Drive
St. George, VA 22935
(434) 985-2811
(7)
6:1S:T Ratio
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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.
#67(T67–T122)Brewster Academy
Gr: 9-12, PG
80 Academy Drive
Wolfeboro, NH 03894
(603) 569-7200
(10)
6:1S:T Ratio
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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.
#67(T67–T122)Canterbury School
Gr: 9-12, PG
Catholic
101 Aspetuck Avenue
New Milford, CT 06776
(860) 210-3832
(1)
6:1S:T Ratio
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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.
#67(T67–T122)Cheshire Academy
Gr: 9-12, PG
10 Main Street
Cheshire, CT 06410
(203) 439-7250
(5)
6:1S:T Ratio
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Choate Rosemary Hall Photo
#67(T67–T122)Choate Rosemary Hall
Gr: 9-12, PG
333 Christian Street
Wallingford, CT 06492
(203) 697-2239
(30)
6:1S:T Ratio
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Christ School Photo
#67(T67–T122)Christ School
Gr: 8-12
All-boys (Episcopal)
500 Christ School Road
Asheville, NC 28704
(828) 684-6232
(1)
6:1S:T Ratio
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Culver Academies Photo - An aerial view of Memorial Chapel and Lake Maxinkuckee. Situated on 1,800 acres of green hills and pristine woodlands, Culver's storied campus is home to three distinct leadership-development experiences: Culver Military Academy, Culver Girls Academy, and Culver Summer Schools and Camps.
#67(T67–T122)Culver Academies
Gr: 9-12
1300 Academy Road
Culver, IN 46511
(574) 842-7100
(21)
6:1S:T Ratio
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Cushing Academy Photo - Cushing Academy is located on a 162-acre campus in Ashburnham, Massachusetts
#67(T67–T122)Cushing Academy
Gr: 9-12, PG
39 School Street
Ashburnham, MA 01430
(978) 827-7300
(3)
6:1S:T Ratio
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Dana Hall School Photo
#67(T67–T122)Dana Hall School
Gr: 9-12 | 5-12 (day)
All-girls
45 Dana Road
Wellesley, MA 02482
(781) 489-1331
(6)
6:1S:T Ratio
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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.
#67(T67–T122)Eagle Hill School
Gr: 8-12
242 Old Petersham Road
Hardwick, MA 01037
(413) 477-6000
(2)
6:1S:T Ratio
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Emma Willard School Photo
#67(T67–T122)Emma Willard School
Gr: 9-12, PG
All-girls
285 Pawling Avenue
Troy, NY 12180
(518) 833-1320
(9)
6:1S:T Ratio
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Fay School Photo - Fay School is an independent, co-educational school 25 miles from Boston serving students in kindergarten through grade 9, with boarding available for grades 7-9. Our school is a place of discovery, challenge, collaboration, and growth - a closely-knit learning community where our skillful, dedicated faculty inspires students to achieve excellence in all pursuits.
#67(T67–T122)Fay School
Gr: 7-9 | K-9 (day)
48 Main Street
Southborough, MA 01772
(508) 490-8201
(1)
6:1S:T Ratio
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Fishburne Military School Photo - Fishburne Military School is the smallest all-boys military boarding school in Virginia. Our cadets come from 18 different states and 4 countries. Located in Waynesboro VA, Fishburne continues to be a pillar of all-boys education since Fishburne's founding in 1879.
#67(T67–T122)Fishburne Military School
Gr: 8-12 | 6-12 (day)
All-boys
225 S. Wayne Avenue
Waynesboro, VA 22980
(540) 946-7706
(7)
6:1S:T Ratio
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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.
#67(T67–T122)Gould Academy
Gr: 9-12, PG
39 Church Street
Bethel, ME 04217
(207) 824-7777
(2)
6:1S:T Ratio
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Grier School Photo
#67(T67–T122)Grier School
Gr: 7-12, PG | 5-12, PG (day)
All-girls
2522 Grier School Road
Birmingham, PA 16686
(814) 684-3000
(6)
6:1S:T Ratio
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Haut-Lac International Bilingual School Photo - Campuses with lake view, Switzerland
#67(T67–T122)Haut-Lac International Bilingual School
Gr: 6-12 | PK-12 (day)
Chem. de Pangires 26
Saint-Légier-La Chiésaz, Switzerland 1806
412155550
6:1S:T Ratio
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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.
#67(T67–T122)Holderness School
Gr: 9-12, PG
Episcopal
PO Box 1879
Plymouth, NH 03264
(603) 536-1747
(9)
6:1S:T Ratio
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Interlochen Arts Academy Photo - Music students study in the state-of-the-art Music Center, which features two large ensemble rehearsal halls, nine ensemble rooms, 25 teaching studios, a recording studio, and more.
#67(T67–T122)Interlochen Arts Academy
Gr: 9-12, PG
4000 J Maddy Pkwy
Interlochen, MI 49643
(231) 276-7472
(2)
6:1S:T Ratio
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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.
#67(T67–T122)The International School of Schaffhausen
Gr: 9-12 | PK-12 (day)
Mühlentalstrasse 280
Schaffhausen, Switzerland 8200
41526241707
6:1S:T Ratio
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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.
#67(T67–T122)Kents Hill School
Gr: 9-12, PG
PO Box 257, 1614 Main St., Rte. 17
Kents Hill, ME 04349
(207) 685-1606
(1)
6:1S:T Ratio
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Kimball Union Academy Photo
#67(T67–T122)Kimball Union Academy
Gr: 9-12, PG
7 Campus Center Drive
Meriden, NH 03770
(603) 469-2100
(6)
6:1S:T Ratio
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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.
#67(T67–T122)The Kiski School
Gr: 9-12, PG
1888 Brett Lane
Saltsburg, PA 15681
(724) 639-8035
6:1S:T Ratio
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The Knox School Photo - The Knox School is an independent boarding and day school serving Grades 6-12 and Post-Graduate on 35 acres of waterfront property along Long Island's North Shore. Our campus offers convenient access to New York City, JFK International Airport, and ferry service to Connecticut.
#67(T67–T122)The Knox School
Gr: 6-12, PG
541 Long Beach Road
Saint James, Long Island, NY 11780
(631) 686-1600
(3)
6:1S:T Ratio
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Lake Forest Academy Photo - Lake Forest Academy's 452 students are from over 19 states and 40 countries. Our student body includes 22% international students, 43% domestic students of color, and 34% of students receive financial aid.
#67(T67–T122)Lake Forest Academy
Gr: 9-12, PG
1500 West Kennedy Road
Lake Forest, IL 60045
(847) 615-3267
(2)
6:1S:T Ratio
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Léman Manhattan Preparatory School Photo
#67(T67–T122)Léman Manhattan Preparatory School
Gr: 9-12 | PK-12 (day)
1 Morris Street
New York, NY 10004
(212) 232-0266
6:1S:T Ratio
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The MacDuffie School Photo - Aerial view of MacDuffie's 250 acre campus
#67(T67–T122)The MacDuffie School
Gr: 6-12, PG
66 School Street
Granby, MA 01033
(413) 255-0000
(1)
6:1S:T Ratio
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McCallie School Photo - The College Counseling office works with our students to help them find the best college fit and to ensure they are well prepared for the application and financial aid processes.
#67(T67–T122)McCallie School
Gr: 9-12, PG | 6-12, PG (day)
All-boys (Non-denom. / Christian)
500 Dodds Avenue
Chattanooga, TN 37404
(423) 624-8300
(3)
6:1S:T Ratio
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Miss Hall's School Photo
#67(T67–T122)Miss Hall's School
Gr: 9-12, PG
All-girls
492 Holmes Road
Pittsfield, MA 01201
(413) 499-1300
(6)
6:1S:T Ratio
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Miss Porter's School Photo
#67(T67–T122)Miss Porter's School
Gr: 9-12
All-girls
60 Main Street
Farmington, CT 06032
(860) 409-3530
(6)
6:1S:T Ratio
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Frequently Asked Questions

Which boarding schools have the lowest student-teacher ratio?
The boarding schools with the lowest student-teacher ratio are Middlebridge School, La Garenne and Oliverian School.
How many boarding schools are ranked for the lowest student-teacher ratio?
266 boarding schools are ranked for the lowest student-teacher ratio.

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Student:teacher ratios are only one indicator of student attention, as they merely indicate the number of adults on campus (in a teacher-related capacacity) relative to the number of students.
The student:teacher ratio is different than the average class size at a school and should not be confused as such.

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