Largest Connecticut Private Schools
- The average private school in Connecticut has approximately 163 students (2021).
- The largest private school in Connecticut is Horace Mann School John Dorr Nature Laboratory with 1,330 students.
- The private schools with the largest student enrollments are listed below (where sufficient data available).
Largest Connecticut Private Schools (2021)
- School # Students Grades Location
- Rank: #11. Students: 1,330
Grades: 2-12220 Nettleton Hollow Rd
Washington, CT 06793
(860) 868-2230 - Rank: #22. Students: 1,251
Grades: NS-12401 Old Church Rd
Greenwich, CT 06830
(203) 863-5600 - Rank: #33. Students: 1,006
Grades: PK-12100 Maher Avenue
Greenwich, CT 06830
(203) 625-5800 -
- Rank: #44. Students: 850
Grades: 9-12333 Christian Street
Wallingford, CT 06492
(203) 697-2338 - Rank: #55.Fairfield College PreparatoryAll-boys (Roman Catholic)Students: 826
Grades: 9-121073 N Benson Rd
Fairfield, CT 06824
(203) 254-4200 - Rank: #66. Students: 811
Grades: PK-12200 N Maple Ave
Greenwich, CT 06830
(203) 625-8915 - Rank: #77. Students: 794
Grades: 9-122320 Huntington Tpke
Trumbull, CT 06611
(203) 378-9378 - Rank: #88. Students: 731
Grades: NS-121177 King Street
Greenwich, CT 06831
(203) 532-3534 - Rank: #99. Students: 714
Grades: 7-12986 Forest Road
New Haven, CT 06515
(203) 397-1001 - Rank: #1010. Students: 713
Grades: PK-1235 Beachside Avenue
Greens Farms, CT 06838
(203) 256-7501 - Rank: #1212. Students: 662
Grades: 9-12181 Randolph Rd
Middletown, CT 06457
(860) 346-7735 - Rank: #1313. Students: 650
Grades: 9-124 Batchelder Road
Windsor, CT 06095
(860) 687-6400 - Rank: #1414. Students: 648
Grades: 6-8948 Newfield Avenue
Stamford, CT 06905
(704) 527-7822 - Rank: #1515. Students: 612
Grades: 9-1211 Interlaken Road
Lakeville, CT 06039
(860) 435-3102 - Rank: #1616. Students: 600
Grades: NS-9635 Frogtown Road
New Canaan, CT 06840
(203) 972-0771 - Rank: #1717. Students: 597
Grades: NS-121108 Whitney Ave
Hamden, CT 06517
(203) 752-2610 - Rank: #1818. Students: 587
Grades: 9-12110 Woodbury Road
Watertown, CT 06795
(860) 945-7777 - Rank: #1919. Students: 581
Grades: 5-12377 North Wilton Road
New Canaan, CT 06840
(203) 801-4833 - Rank: #2020.Notre Dame High SchoolAll-boys (Roman Catholic)Students: 574
Grades: 9-1224 Ricardo St
West Haven, CT 06516
(203) 933-1673 - Rank: #2121. Students: 572
Grades: 9-121 Macedonia Road
Kent, CT 06757
(860) 927-6111 - Rank: #2222.All Saints Catholic School(Roman Catholic)Students: 560
Grades: PK-8139 W Rocks Rd
Norwalk, CT 06851
(203) 847-3881 - Rank: #2323. Students: 555
Grades: 9-12115 New State Rd
Manchester, CT 06042
(860) 649-5336 - Rank: #2424.Notre Dame Catholic High School(Roman Catholic)Students: 523
Grades: 9-12220 Jefferson St
Fairfield, CT 06825
(203) 372-6521 - Rank: #2525. Students: 518
Grades: 6-12170 Kingswood Road
West Hartford, CT 06119
(860) 727-5000 - Rank: #2626. Students: 514
Grades: 9-1229 Wampanoag Drive
West Hartford, CT 06117
(860) 236-4221 - Rank: #2727.Mercy High SchoolAll-girls (Roman Catholic)Students: 498
Grades: 9-121740 Randolph Road
Middletown, CT 06457
(860) 346-6659 - Rank: #2828. Students: 488
Grades: 9-12265 Benham St
Hamden, CT 06514
(203) 288-2309 - Rank: #2929. Students: 485
Grades: 9-1273 Southern Blvd
Danbury, CT 06810
(203) 744-1510 - Rank: #3030. Students: 484
Grades: K-950 Loomis Place
New Haven, CT 06511
(203) 777-3464 - Rank: #3131. Students: 480
Grades: NS-8969 Lake Avenue
Greenwich, CT 06831
(203) 302-3946 - Rank: #3232. Students: 469
Grades: 9-12200 High St
Milford, CT 06460
(203) 877-2786 - Rank: #3333. Students: 460
Grades: 9-12587 Oronoke Rd
Waterbury, CT 06708
(203) 757-9248 - Rank: #3434. Students: 450
Grades: K-12575 White Plains Rd
Trumbull, CT 06611
(203) 261-6230 - Rank: #3535.Corpus Christi School(Roman Catholic)Students: 423
Grades: K-9581 Silas Deane Hwy
Wethersfield, CT 06109
(860) 529-5487
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