King School Photo - Grade 4 students discussing the world around them in science class.

Best Connecticut Private Schools Belonging to State or regional independent school association (2025-26)

For the 2025-26 school year, there are 33 private schools belonging to State or regional independent school association serving 9,426 students in Connecticut. You can also find more schools membership associations in Connecticut.
The top ranked private schools belonging to State or regional independent school association in Connecticut include Greenwich Academy, Sacred Heart Greenwich, and New Canaan Country School.
The average tuition cost is $40,709, which is higher than the Connecticut private school average tuition cost of $28,137.
27% of private schools belonging to State or regional independent school association in Connecticut are religiously affiliated (most commonly Catholic and Jewish).

Top Ranked Private Schools Belonging to State or regional independent school association in Connecticut (2025-26)

School
Location
Quick Facts
King School
King School Photo - Grade 1 students participating in STEM activities.
1450 Newfield Ave
Stamford, CT 06905
(203) 322-3496
Gr: PK-12 | 718 students Avg. class size: 12 students Sports: 19 | Extracurrculars: 42 Tuition listed
New Canaan Country School
New Canaan Country School Photo - Academics, arts, music and athletics are woven into our students' day to pique their curiosity and instill a joy of learning.
(9)
635 Frogtown Road
New Canaan, CT 06840
(203) 972-0771
Gr: NS-9 | 555 students Avg. class size: 16 students Sports: 13 | Extracurrculars: 16 Tuition & acceptance rate listed
Rectory School
Rectory School Photo - Rectory School, nestled on 138 acres in Pomfret, Connecticut, is a distinguished K-9 private institution renowned as a "Junior Boarding School." Offering both 5-day and 7-day boarding options for students in grades 5-9, Rectory ensures a comprehensive educational experience.
528 Pomfret Street
Pomfret, CT 06258
(860) 928-1328
Gr: K-9 Avg. class size: 10 students Sports: 23 | Extracurrculars: 27 Tuition listed
Fairfield Country Day School
Fairfield Country Day School Photo - FCDS Campus
All-boys
(2)
2970 Bronson Road
Fairfield, CT 06824
(203) 259-2723
Gr: K-9 | 201 students Avg. class size: 6 students Sports: 8 Tuition listed
Avon Old Farms School
Avon Old Farms School Photo - Avon Old Farms School is expert in educating boys. Since we are a single sex school, we use specialized learning methodologies focused on the areas of development that are critical to a young male in their adolescent years. This helps achieve greater success not only in the following four years of college, but the next forty years of their lives.
All-boys
500 Old Farms Rd
Avon, CT 06001
(860) 404-4100
Gr: 9-12 | 415 students Avg. class size: 12 students Sports: 15 Tuition listed
East Catholic High School
East Catholic High School Photo
(Catholic)
115 New State Rd
Manchester, CT 06042
(860) 649-5336
Gr: 9-12 | 479 students Avg. class size: 23 students Sports: 19 Tuition & acceptance rate listed
Fairfield College Preparatory
All-boys (Catholic)
(1)
1073 N Benson Rd
Fairfield, CT 06824
(203) 254-4200
Gr: 9-12 | 757 students
Greens Farms Academy
Greens Farms Academy Photo
35 Beachside Avenue
Greens Farms, CT 06838
(203) 256-7501
Gr: PK-12 | 713 students Avg. class size: 15 students Sports: 14 Tuition listed
Greenwich Academy
All-girls
(2)
200 N Maple Ave
Greenwich, CT 06830
(203) 625-8900
Gr: PK-12 | 830 students
401 Old Church Rd
Greenwich, CT 06830
(203) 863-5600
Gr: NS-12 | 1,251 student Tuition & acceptance rate listed
Intensive Education Academy In
Special Education School
840 North Main St.
West Hartford, CT 06117
(860) 236-2049
Gr: 2-12 | 56 students Avg. class size: 7 students Sports: 1 | Extracurrculars: 2 Tuition & acceptance rate listed
Lauralton Hall
Lauralton Hall Photo
All-girls (Catholic)
(3)
200 High St
Milford, CT 06460
(203) 877-2786
Gr: 9-12 Avg. class size: 15 students Sports: 16 | Extracurrculars: 13 Tuition listed
Oak Grove Montessori School
Montessori School
132 Pleasant Valley Road
Mansfield Center, CT 06250
(860) 456-1031
Gr: PK-6 | 51 students Avg. class size: 10 students Tuition & acceptance rate listed
Rumsey Hall School
Rumsey Hall School Photo
201 Romford Rd
Washington Depot, CT 06794
(860) 868-0535
Gr: PK-9 | 328 students Avg. class size: 12 students Sports: 17 Tuition & acceptance rate listed
Sacred Heart Academy
Sacred Heart Academy Photo - Students learn to work with many painting media such as acrylic, oil, and watercolor in this course that covers painting, design and visual concepts.
All-girls (Catholic)
265 Benham St
Hamden, CT 06514
(203) 288-2309
Gr: 9-12 | 354 students Avg. class size: 19 students Tuition listed
Sacred Heart Greenwich
Sacred Heart Greenwich Photo
All-girls (Catholic)
(7)
1177 King Street
Greenwich, CT 06831
(609) 261-2273
Gr: PK-12 | 680 students Avg. class size: 13 students Sports: 17 | Extracurrculars: 17 Tuition & acceptance rate listed
St. Mary School
(Catholic)
(3)
72 Gulf St
Milford, CT 06460
(203) 878-6539
Gr: PK-8 | 360 students Avg. class size: 17 students Tuition listed
Xavier High School
All-boys (Catholic)
(3)
181 Randolph Rd
Middletown, CT 06457
(860) 346-7735
Gr: 9-12 | 600 students Avg. class size: 12 students Sports: 18 | Extracurrculars: 1 Tuition & acceptance rate listed
The Bess & Paul Sigel Hebrew Academy
(Jewish)
(1)
53 Gabb Rd
Bloomfield, CT 06002
(860) 243-8333
Gr: PK-8 | 105 students
The Children's School
Montessori School
118 Scofieldtown Rd
Stamford, CT 06903
(203) 329-8815
Gr: K-3 | 50 students
Cobb School Montessori
Cobb School Montessori Photo - Join Cobb School Montessori today and watch your child thrive in a nurturing, hands-on environment. We cultivate a love for learning that lasts a lifetime!
Montessori School
(12)
112 Sand Hill Road
Simsbury, CT 06070
(860) 658-1144
Gr: NS-6 | 170 students Avg. class size: 20 students Extracurrculars: 6 Tuition listed
Community Child Guidance Clinic
Special Education School
317 N Main St
Manchester, CT 06042
(606) 460-2051
Gr: 1-8 | 21 students Avg. class size: 6 students Tuition listed
Elizabeth Ives School For Special Children
Special Education School
70 State St
North Haven, CT 06473
(203) 234-8770
Gr: 3-12 | 14 students
Housatonic Valley Waldorf School
Housatonic Valley Waldorf School Photo - Pre-k and Kindergarten
Special Program Emphasis
(3)
40 Dodgingtown Rd
Newtown, CT 06470
(203) 364-1113
Gr: NS-8 | 145 students Avg. class size: 12 students Extracurrculars: 6 Tuition listed
Landmark Preschool
Daycare / Preschool
11 Burr Rd
Westport, CT 06880
(203) 226-6982
Gr: PK-K | 145 students Avg. class size: 16 students
The Light House (Lighthouse Voc-ed Center Inc.)
Special Education School
125 Shaw St.
New London, CT 06320
(860) 445-7626
Gr: 2-12 | 22 students Tuition listed
Mayflower Montessori School
Montessori School
87 Broadway
Norwich, CT 06360
(860) 889-0883
Gr: K | 25 students
The Mead School
The Mead School Photo
1095 Riverbank Road
Stamford, CT 06903
(203) 595-9500
Gr: PK-8 | 174 students Avg. class size: 6 students Sports: 3 | Extracurrculars: 12 Tuition listed
Options Educational Services
Special Education School
606 Farmington Ave
Hartford, CT 06105
(860) 712-6362
Gr: 8-12 | 20 students
Pierrepont School
(2)
1 Sylvan Rd N
Westport, CT 06880
(203) 226-1891
Gr: K-12 | 120 students Avg. class size: 6 students Tuition listed
Solomon Schechter Academy
(Jewish)
660 Ocean Ave
New London, CT 06320
(860) 443-5589
Gr: 3-4 | 22 students
Touchstone School
All-girls | Special Education School
11 Country Place
Litchfield, CT 06759
(860) 567-3809
Gr: 12 | 3 students
The Woodhall School
The Woodhall School Photo - The Woodhall Players presented John Steinbeck's drama, Of Mice and Men.
All-boys | Alternative School
58 Harrison Ln
Bethlehem, CT 06751
(203) 409-2644
Gr: 9-12 | 42 students Avg. class size: 3 students Sports: 7 | Extracurrculars: 7 Tuition & acceptance rate listed

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