BoardingSchoolReview.com lists 9 boarding schools as The Independent Schools Association of the Central States (ISACS) members, serving 3,192 students. Learn more about the association at The Independent Schools Association of the Central States (ISACS).
Membership data comes from the schools themselves and from published association directories. See all school associations.
The Independent Schools Association of the Central States (ISACS) Member Schools (2026-27)
School
Location
Quick Facts
1300 Academy Road
Culver, IN 46511
(574) 842-7100
Culver, IN 46511
(574) 842-7100
Gr: 9-12 | 835 students Student-teacher ratio: 6:1 Avg. class size: 14 students Acceptance rate: 49% Tuition listed
11530 Madison Road
Huntsburg, OH 44046
(440) 357-0918
Huntsburg, OH 44046
(440) 357-0918
Gr: 8-12, PG | 7-12, PG (day) | 51 students Student-teacher ratio: 10:1 Avg. class size: 10 students Acceptance rate: 87% Tuition listed
4000 J Maddy Pkwy
Interlochen, MI 49643
(231) 276-7472
Interlochen, MI 49643
(231) 276-7472
Gr: 9-12, PG | 579 students Student-teacher ratio: 6:1 Avg. class size: 12 students Tuition listed
60 Knox Lane
Wheeling, WV 26003
(304) 233-1436
Wheeling, WV 26003
(304) 233-1436
Gr: 7-12 | 5-12 (day) | 447 students Student-teacher ratio: 7:1 Avg. class size: 12 students Acceptance rate: 65% Tuition listed
204 Grand Street
Mexico, MO 65265
(573) 581-1776
Mexico, MO 65265
(573) 581-1776
Gr: 7-12, PG | 220 students Student-teacher ratio: 11:1 Avg. class size: 14 students Acceptance rate: 65% Tuition listed
Principia School ![Principia School Photo - Principia's supportive community is one where all levels come together to cheer on our sports teams.]( "Principia School Photo - Principia's supportive community is one where all levels come together to cheer on our sports teams.")
(Christian)
13201 Clayton Rd
St. Louis, MO 63131
(314) 514-3188
St. Louis, MO 63131
(314) 514-3188
Gr: 8-12 | PK-12 (day) | 511 students Student-teacher ratio: 8:1 Avg. class size: 15 students Acceptance rate: 62% Tuition listed
1101 Genesee Street
Delafield, WI 53018
(262) 646-7199
Delafield, WI 53018
(262) 646-7199
Gr: 7-12, PG | 235 students Student-teacher ratio: 13:1 Avg. class size: 13 students Acceptance rate: 84% Tuition listed
5201 SPIRE Circle
Geneva, OH 44041
(440) 466-1002
Geneva, OH 44041
(440) 466-1002
Gr: 9-12, PG | 226 students Student-teacher ratio: 10:1 Avg. class size: 12 students Acceptance rate: 80% Tuition listed
4100 South Lindbergh Blvd.
Saint Louis, MO 63127
(314) 843-4151
Saint Louis, MO 63127
(314) 843-4151
Gr: 7-12 | 88 students Student-teacher ratio: 6:1 Avg. class size: 15 students Acceptance rate: 70% Tuition listed
Recent Articles
When Small Classes Are Not Enough: Executive Function
Small classes help, but students with executive-function challenges may need more. Learn how to evaluate boarding school coaching, structure, residential support, communication, and systems that build lasting independence over time.
How Boarding Schools Handle Staff Misconduct
Learn how boarding schools screen employees, supervise staff, establish professional boundaries, investigate concerns, meet reporting obligations, and communicate with families about misconduct before and after enrollment decisions arise.
How to Verify Learning-Support Services Before You Enroll
Learn how to verify boarding school learning-support services before enrolling, including staffing, accommodations, costs, progress monitoring, residential coordination, and questions families should ask during admissions visits and final decisions.
