BoardingSchoolReview.com lists 16 boarding schools as Independent Schools Association of the Central States (ISACS) members, serving 6,327 students. Learn more about the association at Independent Schools Association of the Central States (ISACS).
Membership data comes from the schools themselves and from published association directories. See all school associations.
Independent Schools Association of the Central States (ISACS) Member Schools (2026-27)
Gr: 6-12 | 800 students
Student-teacher ratio: 9:1
Avg. class size: 17 students
Tuition listed
All-boys (Catholic)
425 South Lindbergh Blvd.
St. Louis, MO 63131
(314) 692-6645
Gr: 9-12 | PK-12 (day) | 810 students
Student-teacher ratio: 8:1
Avg. class size: 16 students
Acceptance rate: 38%
Tuition listed
PO Box 801 39221 Woodward Ave.
Bloomfield Hills, MI 48303
(248) 645-3610
Gr: 9-12 | 835 students
Student-teacher ratio: 6:1
Avg. class size: 14 students
Acceptance rate: 49%
Tuition listed
1300 Academy Road
Culver, IN 46511
(574) 842-7100
Gr: 7-12, PG | 51 students
Student-teacher ratio: 10:1
Avg. class size: 10 students
Acceptance rate: 87%
Tuition listed
11530 Madison Road
Huntsburg, OH 44046
(440) 357-0918
Gr: 9-12, PG | 579 students
Student-teacher ratio: 6:1
Avg. class size: 11 students
Tuition listed
4000 J Maddy Pkwy
Interlochen, MI 49643
(231) 276-7472
Gr: 9-12, PG | 160 students
Student-teacher ratio: 7:1
Avg. class size: 10 students
Tuition listed
Catholic
6801 N. Wilhelm Road
La Porte, IN 46350
(219) 326-7450
Gr: 7-12 | 5-12 (day) | 447 students
Student-teacher ratio: 7:1
Avg. class size: 12 students
Acceptance rate: 65%
Tuition listed
60 Knox Lane
Wheeling, WV 26003
(304) 233-1436
Gr: 9-12 | PK-12 (day) | 184 students
Student-teacher ratio: 5:1
Avg. class size: 12 students
Acceptance rate: 85%
Tuition listed
804 Dr Robert K Wallace Drive
Fairfield, IA 52556
(641) 472-9400
Gr: 8-12 | K-12 (day) | 456 students
Student-teacher ratio: 10:1
Avg. class size: 15 students
Tuition listed
1215 Rice Lake Rd
Duluth, MN 55811
(218) 727-7266
Gr: 7-12, PG | 220 students
Student-teacher ratio: 11:1
Avg. class size: 14 students
Acceptance rate: 65%
Tuition listed
All-boys (Non-denom. / Christian)
204 Grand Street
Mexico, MO 65265
(573) 581-1776
Gr: 8-12 | PK-12 (day) | 511 students
Student-teacher ratio: 8:1
Avg. class size: 15 students
Acceptance rate: 62%
Tuition listed
Christian
13201 Clayton Rd
St. Louis, MO 63131
(314) 514-3188
Gr: 7-12, PG | 235 students
Student-teacher ratio: 13:1
Avg. class size: 12 students
Acceptance rate: 84%
Tuition listed
Episcopal
1101 Genesee Street
Delafield, WI 53018
(262) 646-7199
Gr: 8-12, PG | 6-12, PG (day) | 280 students
Student-teacher ratio: 11:1
Avg. class size: 18 students
Acceptance rate: 88%
Tuition listed
Catholic
2280 Watertower Road
Collegeville, MN 56321
(320) 363-3315
Gr: 9-12, PG | 240 students
Student-teacher ratio: 10:1
Avg. class size: 12 students
Acceptance rate: 80%
Tuition listed
5201 SPIRE Circle
Geneva, OH 44041
(440) 466-1002
Gr: 7-12 | 88 students
Student-teacher ratio: 6:1
Avg. class size: 12 students
Acceptance rate: 70%
Tuition listed
4100 South Lindbergh Blvd.
Saint Louis, MO 63127
(314) 843-4151
Gr: 9-12, PG | 431 students
Student-teacher ratio: 6:1
Avg. class size: 12 students
Acceptance rate: 39%
Tuition listed
115 College Street
Hudson, OH 44236
(330) 650-9717
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