The Long Ridge School Photo - Micheal G. Harris Arts and Athletics Center

Best Connecticut Private Schools Belonging to No Membership Association (2026)

For the 2026 school year, there are 325 private schools belonging to No Membership Association in Connecticut. You can also find more schools membership associations in Connecticut.
The top-ranked private schools belonging to No Membership Association in Connecticut include Hamden Hall Country Day School, Brunswick School, and King School.

Top-Ranked Private Schools Belonging to No Membership Association in Connecticut (2026)

School
Location
Quick Facts
Easton Country Day School
Easton Country Day School Photo - Easton Country Day
(13)
660 Morehouse Road
Easton, CT 06612
(203) 268-5530
Gr: PK-12 | 246 students Avg. class size: 12 students Sports: 5 Tuition listed
1108 Whitney Ave
Hamden, CT 06517
(203) 752-2610
Gr: NS-12 | 650 students Avg. class size: 12 students Sports: 21 | Extracurrculars: 45 Tuition listed
Immaculate High School
Immaculate High School Photo - Students studying / socializing together in our Learning Commons
(Catholic)
(11)
73 Southern Blvd
Danbury, CT 06810
(203) 744-1510
Gr: 9-12 | 396 students Avg. class size: 16 students Sports: 17 | Extracurrculars: 24 Tuition & acceptance rate listed
King School
King School Photo
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
Kingswood Oxford School
Kingswood Oxford School Photo - Our mission and core values are the grounding force within our school, its very soul. Our mission is why we are here. Our values are what we do. Ask any KO student about the core value that resonates with them the most, and you`ll get thoughtful and meaningful answers. 'Care beyond self' always tops the list.
(1)
170 Kingswood Road
West Hartford, CT 06119
(860) 727-5000
Gr: 6-12 | 507 students Avg. class size: 13 students Sports: 17 | Extracurrculars: 30 Tuition & acceptance rate 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
Renbrook School
Renbrook School Photo - Renbrook School provides students in preschool through grade eight with a robust, purposeful, and developmentally appropriate educational experience of the highest caliber. Small classes in an intimate community of supportive and caring teachers allow for an individualized approach to learning enabling each child to learn to take appropriate risks and identify and cultivate his or her own strengths.
(17)
2865 Albany Avenue
West Hartford, CT 06117
(860) 236-1661
Gr: NS-8 | 373 students Avg. class size: 14 students Sports: 12 | Extracurrculars: 2 Tuition & acceptance rate listed
Ridgefield Academy
Ridgefield Academy Photo - In a school that is Pre-K to Grade 8 by design, childhood is valued and kids are encouraged to stay kids. Students have ample opportunities to play outdoors and indoors, and often can be seen rushing to recess each day on the Outdoor Campus Center, a bi-level playscape that provides endless opportunities for play and learning.
(12)
223 West Mountain Rd
Ridgefield, CT 06877
(203) 894-1800
Gr: NS-8 | 535 students Avg. class size: 10 students Sports: 12 | Extracurrculars: 11 Tuition & acceptance rate listed
St. Joseph High School
St. Joseph High School Photo - St Joseph High School, Trumbull CT
(Catholic)
(4)
2320 Huntington Tpke
Trumbull, CT 06611
(203) 378-9378
Gr: 9-12 | 678 students Avg. class size: 15 students Sports: 21 | Extracurrculars: 35 Tuition listed
St. Luke's School
St. Luke's School Photo
377 North Wilton Road
New Canaan, CT 06840
(203) 801-4833
Gr: 5-12 | 587 students Avg. class size: 13 students Sports: 14 | Extracurrculars: 10 Tuition & acceptance rate listed
South Kent School
South Kent School Photo
All-boys (Episcopal)
(2)
40 Bulls Bridge Road
South Kent, CT 06785
(860) 927-3539
Gr: 9-12 | 170 students Avg. class size: 15 students Sports: 13 | Extracurrculars: 10 Tuition & acceptance rate listed
Watkinson School
Watkinson School Photo - 225 students from 43 towns, reflecting a wide range of academic, personal and socioeconomic backgrounds. Faculty includes 43 teachers, 26 of whom hold master's degrees or above. Student-teacher ratio 6:1. Average class size 14
(2)
180 Bloomfield Avenue
Hartford, CT 06105
(860) 236-5618
Gr: 6-12 | 240 students Avg. class size: 13 students Sports: 9 | Extracurrculars: 14 Tuition & acceptance rate listed
Westover School
Westover School Photo
All-girls
(3)
1237 Whittemore Road
Middlebury, CT 06762
(203) 577-4521
Gr: 9-12 | 192 students Avg. class size: 12 students Sports: 16 | Extracurrculars: 26 Tuition & acceptance rate listed
The Williams School
The Williams School Photo
(5)
182 Mohegan Avenue
New London, CT 06320
(860) 443-5333
Gr: 6-12 | 191 students Avg. class size: 11 students Sports: 7 | Extracurrculars: 11 Tuition & acceptance rate listed
285 Lafayette Street
Bridgeport, CT 06604
(203) 334-3434
Gr: 9-12 | 62 students Avg. class size: 12 students Extracurrculars: 6 Tuition & acceptance rate 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
Fusion Academy Fairfield
Fusion Academy Fairfield Photo - Each Fusion campus has a state-of-the-art music studio with professional-grade tools. Students can explore instruments, vocals, songwriting, DJ performing arts, and more.
Alternative School
777 Commerce Drive, Suite 100
Fairfield, CT 06824
(877) 673-8893
Gr: 6-12 | 14 students Avg. class size: 1 student Tuition listed
Fusion Academy Greenwich
Fusion Academy Greenwich Photo - Each Fusion campus has a state-of-the-art music studio with professional-grade tools. Students can explore instruments, vocals, songwriting, DJ performing arts, and more.
Alternative School
66 Gatehouse Road
Stamford, CT 06902
(877) 673-8893
Gr: 6-12 Avg. class size: 1 student Tuition listed
The Long Ridge School
The Long Ridge School Photo - Micheal G. Harris Arts and Athletics Center
(7)
478 Erskine Road
Stamford, CT 06903
(203) 322-7693
Gr: NS-5 | 94 students Avg. class size: 14 students Extracurrculars: 10 Tuition listed
St. Thomas More School
St. Thomas More School Photo
(2)
45 Cottage Road
Oakdale, CT 06370
(860) 823-3861
Gr: 8-12 | 180 students Avg. class size: 11 students Sports: 9 | Extracurrculars: 11 Tuition & acceptance rate listed
St. Thomas's Day School
St. Thomas's Day School Photo - Outdoor education is an important part of our Science curriculum!
(Episcopal)
(6)
830 Whitney Avenue
New Haven, CT 06511
(203) 776-2123
Gr: K-6 | 126 students Avg. class size: 20 students Sports: 1 | Extracurrculars: 3 Tuition listed
Academy Of The Holy Family
Academy Of The Holy Family Photo - International Day
All-girls (Catholic)
54 W Main St. Box 691
Baltic, CT 06330
(860) 822-9272
Gr: 9-12 | 30 students Avg. class size: 8 students Sports: 3 | Extracurrculars: 11 Tuition & acceptance rate listed
Adelbrook
Special Education School
(1)
60 Hicksville Rd
Cromwell, CT 06416
(860) 635-5801
Gr: 5-12 | 79 students
All Saints Catholic School
All Saints Catholic School Photo - A School That Feels Like Home Welcome Home to All Saints Catholic School, where we build the foundation for your child's future success. On our five-acre campus, we create an environment where a big school feels small, and your child is known and loved.
(Catholic)
139 W Rocks Rd
Norwalk, CT 06851
(203) 847-3881
Gr: PK-8 | 560 students Avg. class size: 20 students Sports: 4 | Extracurrculars: 1 Tuition & acceptance rate listed
Assumption Catholic School
Assumption Catholic School Photo
(Catholic)
(1)
605 Stratfield Rd
Fairfield, CT 06825
(203) 334-6271
Gr: PK-8 | 210 students Avg. class size: 16 students Sports: 6 | Extracurrculars: 3 Tuition & acceptance rate listed
Assumption School
(Catholic)
51 N Cliff St
Ansonia, CT 06401
(203) 734-0855
Gr: PK-8 | 191 students
ATLAS - Academic Theatre Lab on Audubon
ATLAS - Academic Theatre Lab on Audubon Photo
Special Program Emphasis
100 Audubon St.
New Haven, CT 06510
(203) 624-5189
Gr: 7-9 | 20 students Avg. class size: 15 students Tuition & acceptance rate 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
Benhaven Academy
Special Education School
50 N Plains Hwy
Wallingford, CT 06492
(203) 774-0008
Gr: 5-12 | 32 students
Bi-cultural Hebrew Academy
(Jewish)
(3)
2186 High Ridge Rd
Stamford, CT 06903
(203) 329-2186
Gr: PK-12 | 327 students Sports: 3 Tuition & acceptance rate listed
Brunswick School
Brunswick School Photo - Middle School Campus on King Street
All-boys
100 Maher Avenue
Greenwich, CT 06830
(203) 625-5800
Gr: PK-12 | 1,046 student Avg. class size: 11 students Sports: 20 | Extracurrculars: 14 Tuition & acceptance rate listed
The Burlington Academy Of Learning
The Burlington Academy Of Learning Photo - The Burlington Academy of Learning
Daycare / Preschool
10 Covey Rd.
Burlington, CT 06013
(860) 675-3598
Gr: PK-K | 58 students Avg. class size: 14 students Extracurrculars: 5 Tuition & acceptance rate listed
Canterbury School
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.
(Catholic)
101 Aspetuck Avenue
New Milford, CT 06776
(860) 210-3800
Gr: 9-12 | 332 students Avg. class size: 12 students Sports: 18 | Extracurrculars: 18 Tuition & acceptance rate listed
The Catholic Academy Of Stamford
(Catholic)
1186 Newfield Ave
Stamford, CT 06905
(203) 322-6505
Gr: PK-8 | 253 students
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