BoardingSchoolReview.com lists 19 boarding schools as Middle States Association Commissions on Elementary and Secondary Schools (MSA-CESS) members, serving 6,359 students. Learn more about the association at Middle States Association Commissions on Elementary and Secondary Schools (MSA-CESS).
Membership data comes from the schools themselves and from published association directories. See all school associations.
Middle States Association Commissions on Elementary and Secondary Schools (MSA-CESS) Member Schools (2026-27)
Gr: 11-12, PG | 72 students
Student-teacher ratio: 7:1
Avg. class size: 12 students
Tuition listed
International (on a Tall Ship)
Kristiansand, Norway 4610
3475677083
Gr: 9-12 | 290 students
Student-teacher ratio: 8:1
Avg. class size: 15 students
Tuition listed
582 Columbus Ave
Thornwood, NY 10594
(914) 495-6056
Gr: 9-12 | 540 students
Student-teacher ratio: 7:1
Avg. class size: 13 students
Tuition listed
Society of Friends
1690 Newtown Langhorne Road
Newtown, PA 18940
(215) 579-6547
Gr: 7-12, PG | 5-12, PG (day) | 235 students
Student-teacher ratio: 6:1
Avg. class size: 9 students
Acceptance rate: 50%
Tuition listed
All-girls
2522 Grier School Road
Tyrone, PA 16686
(814) 684-3000
Gr: 9-12, PG | 539 students
Student-teacher ratio: 7:1
Avg. class size: 10 students
Acceptance rate: 25%
Tuition listed
860 Beech Street
Pottstown, PA 19464
(610) 326-1000
Gr: 9-12, PG | 6-12, PG (day) | 700 students
Student-teacher ratio: 8:1
Avg. class size: 14 students
Tuition listed
176 Edgerstoune Road
Princeton, NJ 08540
(609) 921-7600
Gr: 8-12 | PK-12 (day) | 320 students
Student-teacher ratio: 10:1
Tuition listed
6385 Beach Rd
Eden Prairie, MN 55344
(952) 918-1800
Gr: 9-12 | PK-12 (day) | 280 students
Student-teacher ratio: 6:1
Avg. class size: 17 students
Tuition listed
Mühlentalstrasse 280
Schaffhausen, Switzerland 8200
41526241707
Gr: 9-12 | 5-12 (day) | 35 students
Student-teacher ratio: 7:1
Avg. class size: 7 students
Acceptance rate: 80%
Tuition listed
255 Olympic Valley Road | P.O. Box 2180
Olympic Valley, CA 96146
(801) 336-0753
Gr: 9-12, PG | 205 students
Student-teacher ratio: 6:1
Avg. class size: 11 students
Acceptance rate: 65%
Tuition listed
1888 Brett Lane
Saltsburg, PA 15681
(724) 639-8035
Gr: 6-12, PG | 130 students
Student-teacher ratio: 6:1
Avg. class size: 12 students
Acceptance rate: 75%
Tuition listed
541 Long Beach Road
Saint James, Long Island, NY 11780
(631) 686-1600
Gr: 9-12, PG | 827 students
Student-teacher ratio: 7:1
Avg. class size: 12 students
Acceptance rate: 17%
Tuition listed
2500 Main Street
Lawrenceville, NJ 08648
(609) 895-2030
Gr: 9-12 | PK-12 (day) | 700 students
Student-teacher ratio: 6:1
Avg. class size: 18 students
Tuition listed
1 Morris Street
New York, NY 10004
(212) 232-0266
Gr: 6-12, PG | 90 students
Student-teacher ratio: 5:1
Avg. class size: 8 students
Acceptance rate: 80%
Tuition listed
All-girls
212 E Main Street
Lititz, PA 17543
(717) 626-8512
Gr: 9-12, PG | 442 students
Student-teacher ratio: 4:1
Avg. class size: 12 students
Acceptance rate: 29%
Tuition listed
100 Academy Drive
Mercersburg, PA 17236
(717) 328-6173
Gr: 6-12, PG | PK-12, PG (day) | 314 students
Student-teacher ratio: 7:1
Avg. class size: 16 students
Acceptance rate: 60%
Tuition listed
18 Goodfriend Drive
East Hampton, NY 11937
(631) 907-5400
Gr: 9-12 | 315 students
Student-teacher ratio: 4:1
Avg. class size: 10 students
Acceptance rate: 22%
Tuition listed
Episcopal
350 Noxontown Road
Middletown, DE 19709
(302) 285-4231
Gr: 8-12 | 260 students
Student-teacher ratio: 6:1
Avg. class size: 11 students
Tuition listed
Episcopal
17641 College Road
Hagerstown, MD 21740
(301) 733-9330
Gr: 9-12, PG | 65 students
Student-teacher ratio: 7:1
Avg. class size: 10 students
Acceptance rate: 80%
Tuition listed
1079 Firetower Road
Colora, MD 21917
(410) 658-9224
Recent Articles
AI Isn’t the Problem: Teaching Students to Use It Well
Is AI in the classroom a shortcut or a stepping stone to deeper learning? Explore how teaching AI literacy rather than banning it - can build critical thinking, strengthen language skills, and preserve human connection in education.
What If Your Child's Boarding School Advisor Leaves?
Learn what happens when your child's boarding school advisor leaves midyear, including reassignment, academic support, parent communication, student relationships, and practical steps families can take to ensure continuity.
What Parents Are Told About Boarding School Dorm Incidents
Discover what boarding schools tell parents about dorm incidents, including bullying, injuries, disciplinary problems, notification policies, privacy protections, reporting timelines, and questions families should ask before choosing a residential school.
