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

Top 20 Best Connecticut Private High Schools Belonging to National Association of Independent Schools (NAIS) (2024-25)

For the 2024-25 school year, there are 58 private high schools belonging to National Association of Independent Schools (NAIS) serving 22,345 students in Connecticut. You can also find more schools membership associations in Connecticut.
The top ranked private high schools belonging to National Association of Independent Schools (NAIS) in Connecticut include Choate Rosemary Hall, Hopkins School, and The Loomis Chaffee School.
The average tuition cost is $54,795, which is higher than the Connecticut private high school average tuition cost of $42,518.
30% of private high schools belonging to National Association of Independent Schools (NAIS) in Connecticut are religiously affiliated (most commonly Catholic and Episcopal).

Top Ranked Private High Schools Belonging to National Association of Independent Schools (NAIS) in Connecticut (2024-25)

School
Location
Grades
Students
Hamden Hall Country Day School
Hamden Hall Country Day School Photo - Between 15 and 20 percent of our graduating student-athletes compete at the collegiate Division I, II and III levels.
(Christian)
(4)
1108 Whitney Ave
Hamden, CT 06517
(203) 752-2610
Grades: NS-12
| 650 students
Hopkins School
Hopkins School Photo - Hopkins is a grade 7-12 grade gender-inclusive learning community located on 108 acres overlooking New Haven.
(6)
986 Forest Road
New Haven, CT 06515
(203) 397-1001
Grades: 7-12
| 715 students
Immaculate High School
Immaculate High School Photo
(Catholic)
(11)
73 Southern Blvd
Danbury, CT 06810
(203) 744-1510
Grades: 9-12
| 384 students
King School
King School Photo - Grade 1 students participating in STEM activities.
1450 Newfield Ave
Stamford, CT 06905
(203) 322-3496
Grades: PK-12
| 718 students
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
Grades: 6-12
| 504 students
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
Grades: NS-9
| 555 students
Rectory School
Rectory School Photo - Rectory's High Value Learning makes the classroom experience more compelling, and even takes the learning outside of the classroom. Our program allows students to thrive in a compelling hands-on environment where teamwork and creative problem solving are emphasized.
528 Pomfret Street
Pomfret, CT 06258
(860) 928-1328
Grades: K-9
| 266 students
St. Joseph High School
St. Joseph High School Photo - At St. Joseph High School, students SEEK out their talents, STRIVE for greatness, SERVE the common good, and THRIVE with confidence.
(Catholic)
(4)
2320 Huntington Tpke
Trumbull, CT 06611
(203) 378-9378
Grades: 9-12
| 740 students
St. Luke's School
St. Luke's School Photo - An aerial view of the St. Luke's 40-acre campus in New Canaan, CT.
377 North Wilton Road
New Canaan, CT 06840
(203) 801-4833
Grades: 5-12
| 586 students
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
Grades: 6-12
| 240 students
Westover School
Westover School Photo
All-girls
(2)
1237 Whittemore Road
Middlebury, CT 06762
(203) 577-4521
Grades: 9-12
| 155 students
The Williams School
The Williams School Photo
(5)
182 Mohegan Avenue
New London, CT 06320
(860) 443-5333
Grades: 6-12
| 191 students
St. Thomas More School
St. Thomas More School Photo
(Catholic)
(2)
45 Cottage Road
Oakdale, CT 06370
(860) 823-3861
Grades: 8-12
| 162 students
South Kent School
South Kent School Photo
All-boys (Episcopal)
(2)
40 Bulls Bridge Road
South Kent, CT 06785
(860) 927-3539
Grades: 9-12
| 170 students
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
Grades: 9-12
| 415 students
Bi-cultural Hebrew Academy
(Jewish)
(3)
2186 High Ridge Rd
Stamford, CT 06903
(203) 329-2186
Grades: PK-12
| 327 students
Brunswick School
Brunswick School Photo - Middle School Campus on King Street
All-boys
100 Maher Avenue
Greenwich, CT 06830
(203) 625-5800
Grades: PK-12
| 1,046 students
Canterbury School
Canterbury School Photo - At Canterbury, you will develop the skills most essential to meeting future challenges and succeeding in college. These start with critical thinking, excellence in writing, and a solid foundation in digital literacy.
(Catholic)
101 Aspetuck
New Milford, CT 06776
(860) 210-3800
Grades: 9-12
| 325 students
565 Chase Parkway
Waterbury, CT 06708
(203) 236-9561
Grades: PK-12
| 164 students
Cheshire Academy
Cheshire Academy Photo - Character development has long been a priority at Cheshire Academy. The Eight Pillars of Bowden are the ways in which we demonstrate our core values and basic beliefs: Respect, Responsibility, Caring, Civility, Citizenship, Morality, Fairness and Trustworthiness.
10 Main St
Cheshire, CT 06410
(203) 439-7250
Grades: 9-12
| 369 students
Choate Rosemary Hall
Choate Rosemary Hall Photo - A community like no other, Choate is a place where you never have to do it alone. Advisers, peers, and the entire community are bonded by mutual respect, a passion for learning, and a spirit of supporting and challenging one another:
333 Christian Street
Wallingford, CT 06492
(203) 697-2000
Grades: 9-12
| 865 students
Fairfield College Preparatory
All-boys (Catholic)
(1)
1073 N Benson Rd
Fairfield, CT 06824
(203) 254-4200
Grades: 9-12
| 757 students
Flexschool
Flexschool Photo
Special Education School
97 Whitney Ave.
New Haven, CT 06510
(908) 322-0554
Grades: 3-12
| 61 students
Foote School
Foote School Photo
(3)
50 Loomis Place
New Haven, CT 06511
(203) 777-3464
Grades: K-9
| 435 students
99 Green Hill Rd
Washington, CT 06793
(860) 868-7334
Grades: 9-12
| 330 students
Greens Farms Academy
Greens Farms Academy Photo
35 Beachside Avenue
Greens Farms, CT 06838
(203) 256-7501
Grades: PK-12
| 713 students
Greenwich Academy
All-girls
(2)
200 N Maple Ave
Greenwich, CT 06830
(203) 625-8900
Grades: PK-12
| 830 students
401 Old Church Rd
Greenwich, CT 06830
(203) 863-5600
Grades: NS-12
| 1,251 students
Holy Cross High School
Holy Cross High School Photo - Be A Scholar, Be A Leader, Be Holy Cross
(Catholic)
587 Oronoke Rd
Waterbury, CT 06708
(203) 757-9248
Grades: 9-12
| 413 students
220 Nettleton Hollow Rd
Washington, CT 06793
(860) 868-2230
Grades: 2-12
| 1,330 students
The Hotchkiss School
The Hotchkiss School Photo - Varsity Sailing Blue
11 Interlaken Road
Lakeville, CT 06039
(860) 435-3102
Grades: 9-12
| 623 students
211 Indian Mountain Road
Lakeville, CT 06039
(860) 435-0871
Grades: PK-9
| 320 students
Kent School
Kent School Photo
(Episcopal)
1 Macedonia Road
Kent, CT 06757
(860) 927-6020
Grades: 9-12
| 504 students
Lauralton Hall
Lauralton Hall Photo
All-girls (Catholic)
(3)
200 High St
Milford, CT 06460
(203) 877-2786
Grades: 9-12
| n/a students
4 Batchelder Road
Windsor, CT 06095
(860) 687-6000
Grades: 9-12
| 703 students
Show 23 more private schools in Connecticut (out of 58 total schools)
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