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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.

New Canaan Country School

Home > Connecticut

Best Connecticut �� Schools Belonging to Membership Associations (2026)

For the 2026 school year, there are 304 private schools belonging to membership associations in Connecticut.

The most popular school membership associations are National Association of Independent Schools (NAIS) (26% of schools), National Catholic Educational Association (NCEA) (24% of schools) and Other school association(s) (18% of schools).

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.

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.

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.

Easton Country Day School Photo - Easton Country Day

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.

Immaculate High School Photo - Students studying / socializing together in our Learning Commons

Westover School Photo

The Williams School Photo

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.

South Kent School Photo

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.

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.

St. Luke's School Photo

St. Thomas More School Photo

St. Thomas's Day School Photo - Outdoor education is an important part of our Science curriculum!

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

St. Martha School Photo

St. Andrew Academy Photo

St. Rita School Photo - Inspiring children to achieve academic excellence in a safe, nurturing, andfaith-filled environment

Westminster School Photo - Armor Academic Center on the campus of Westminster School.

The Master's School Photo - Comprehensive Art Program

Top-Ranked Connecticut �� Schools by Membership Association (2026)

Membership Association

# Schools

# Students

% Minority

Accelerated Christian Education (ACE) or (School of Tomorrow)

3

275

17%

American Association of Christian Schools (AACS)

9

1,083

27%

American Montessori Society (AMS)

18

1,966

31%

Association for Experiential Education (AEE)

1

14

20%

Association Montessori International (AMI)

5

470

26%

Association Montessori Internationale (AMI)

3

472

33%

Association of Christian Schools International (ACSI)

15

1,312

40%

Association of Christian Teachers and Schools (ACTS)

1

59

91%

Association of Classical and Christian Schools (ACCS)

1

24

-

Association of Independent Schools in New England (AISNE)

1

166

17%

Association of Waldorf Schools of North America

2

159

11%

2

14

-

Educational Records Bureau

1

210

23%

European Council for International Schools

1

39

25%

Evangelical Lutheran Education Association (ELEA)

1

105

28%

Friends Council on Education (FCE)

1

80

-

General Conference of the Seventh Day Adventist Church (GCSDAC)

4

163

98%

Institute for Independent Education

4

2,163

34%

International Baccalaureate (IB) World School

2

715

22%

International Boys Schools Coalition

2

511

12%

International Coalition of Girls Schools

1

226

31%

Jesuit Secondary Education Association (JSEA)

1

757

23%

Mercy Secondary Education Association (MSEA)

1

-

-

Middle States Association of Colleges and Secondary Schools

1

-

-

MSA-CESS Middle States Association Commissions on Elementary and Secondary Schools

2

14

-

National Association for the Education of Young Children

44

4,886

37%

National Association of College Admissions Counselors

1

192

50%

National Association of Episcopal Schools (NAES)

4

554

31%

National Association of Independent Schools (NAIS)

79

26,116

27%

National Association of �� Catholic and Independent Schools (NAPCIS)

3

413

60%

National Association of �� Schools

1

232

6%

National Association of �� Special Education Centers

16

1,231

48%

National Catholic Education Association

2

171

12%

National Catholic Educational Association (NCEA)

72

18,396

35%

National Coalition of Girls

4

1,098

76%

National Independent �� Schools Association

3

914

24%

National Lutheran Schools Accreditation

1

61

50%

National Middle School Association

3

828

12%

National Society of Hebrew Day Schools (NSHDS)

3

896

-

New England Association of Schools and Colleges

54

14,169

35%

New York State Association of Independent Schools (NYSAIS)

1

115

-

Other associations(s) for exceptional children

12

1,106

45%

Other Montessori association(s)

8

485

42%

Other religious school association(s)

9

1,361

19%

Other school association(s)

55

10,814

31%

Other special emphasis association(s)

17

1,100

40%

Progressive Education Network

1

240

34%

Solomon Schechter Day Schools (SSDS)

2

196

4%

Southern Baptist Association of Christian Schools (SBACS)

1

85

30%

State or regional independent school association

33

9,426

24%

The Association of Boarding Schools (TABS)

21

6,726

30%

Western Association of Schools and Colleges (WASC)

1

-

-

Xaverian Brothers School Sponsorship

1

410

10%

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