For the 2025 school year, there are 20 private schools serving 2,130 students in Middlesex County, CT (there are 52 public schools, serving 18,234 public students). 10% of all K-12 students in Middlesex County, CT are educated in private schools (compared to the CT state average of 12%).
The top ranked private schools in Middlesex County, CT include Adelbrook, The Children's Tree Montessori School, and Mercy High School.
The average acceptance rate is 82%, which is higher than the Connecticut private school average acceptance rate of 70%.
24% of private schools in Middlesex County, CT are religiously affiliated (most commonly Catholic).
Top Ranked Middlesex County Private Schools (2025)
School
Location
Grades
Students
60 Hicksville Rd
Cromwell, CT 06416
(860) 635-5801
Cromwell, CT 06416
(860) 635-5801
Grades: 5-12
| 79 students
96 Essex Rd
Old Saybrook, CT 06475
(860) 388-3536
Old Saybrook, CT 06475
(860) 388-3536
Grades: PK-6
| 102 students
Mercy High School![Mercy High School Photo]( "Mercy High School Photo")
All-girls (Catholic)
1740 Randolph Road
Middletown, CT 06457
(860) 346-6659
Middletown, CT 06457
(860) 346-6659
Grades: 9-12
| 394 students
Northwest Childrens Center
Daycare / Preschool
34 Coles Road
Cromwell, CT 06416
(860) 635-3485
Cromwell, CT 06416
(860) 635-3485
Grades: PK-K
| 45 students
1393 Boston Post Road
Westbrook, CT 06498
(860) 399-6247
Westbrook, CT 06498
(860) 399-6247
Grades: 8-12
| 48 students
181 Randolph Rd
Middletown, CT 06457
(860) 346-7735
Middletown, CT 06457
(860) 346-7735
Grades: 9-12
| 600 students
Cromwell KinderCare![Cromwell KinderCare Photo - Welcome to the Cromwell KinderCare! Step inside our world of fun and learning!]( "Cromwell KinderCare Photo - Welcome to the Cromwell KinderCare! Step inside our world of fun and learning!")
Daycare / Preschool
146 Berlin Rd.
Cromwell, CT 06416
(860) 613-2263
Cromwell, CT 06416
(860) 613-2263
Grades: NS-PK
| n/a students
Essex KinderCare![Essex KinderCare Photo - Essex KinderCare]( "Essex KinderCare Photo - Essex KinderCare")
Daycare / Preschool
158 Westbrook Rd.
Essex, CT 06426
(860) 767-1072
Essex, CT 06426
(860) 767-1072
Grades: NS-PK
| n/a students
Gianelli's Early Learning Center
Montessori School (Catholic)
67 Round Hill Road
Middletown, CT 06457
(860) 346-5765
Middletown, CT 06457
(860) 346-5765
Grades: PK
| 47 students
115 Laurel Brook Road
Middlefield, CT 06455
(860) 347-7235
Middlefield, CT 06455
(860) 347-7235
Grades: PK-8
| 143 students
Joshua Center Shoreline Cdt
Special Education School
5 Research Pkwy
Old Saybrook, CT 06475
(860) 510-0163
Old Saybrook, CT 06475
(860) 510-0163
Grades: 9-12
| 7 students
390 Main Street
Middlefield, CT 06455
(860) 349-0202
Middlefield, CT 06455
(860) 349-0202
Grades: NS-4
| 43 students
Montessori Circle Of Friends
Montessori School
25 W. Main St
Chester, CT 06412
(860) 526-9995
Chester, CT 06412
(860) 526-9995
Grades: PK-K
| 26 students
Moodus KinderCare
Daycare / Preschool
99 Leesville Rd.
Moodus, CT 06469
(860) 873-9666
Moodus, CT 06469
(860) 873-9666
Grades: NS-PK
| n/a students
Mt. Saint John
All-boys | Special Education School
135 Kirtland St
Deep River, CT 06417
(860) 343-1300
Deep River, CT 06417
(860) 343-1300
Grades: 9-12
| 39 students
Northwest Village School
Special Education School
20 Tuttle Pl Ste 4
Middletown, CT 06457
(860) 793-3717
Middletown, CT 06457
(860) 793-3717
Grades: 1-12
| 134 students
Rushford Academy School
All-boys | Special Education School
459r Wallingford Rd
Durham, CT 06422
(860) 349-1989
Durham, CT 06422
(860) 349-1989
Grades: 9-12
| 8 students
St. John Paul Ii School
(Catholic)
87 S Main St
Middletown, CT 06457
(860) 347-2978
Middletown, CT 06457
(860) 347-2978
Grades: PK-8
| 189 students
42 Maynard Rd
Old Saybrook, CT 06475
(860) 388-0849
Old Saybrook, CT 06475
(860) 388-0849
Grades: PK-8
| 132 students
Middlesex County Private Schools (Closed)
School
Location
Grades
Students
St. John School (Closed 2010)
(Catholic)
5 Saint Johns Sq
Middletown, CT 06457
(860) 347-3202
Middletown, CT 06457
(860) 347-3202
Grades: K-8
| 114 students
St. Sebastian School (Closed 2006)
(Catholic)
61 Durant Ter
Middletown, CT 06457
(860) 347-3438
Middletown, CT 06457
(860) 347-3438
Grades: PK-8
| 132 students
Frequently Asked Questions
What are the top ranked private schools in Middlesex County, CT?
The top ranked private schools in Middlesex County, CT include Adelbrook, The Children's Tree Montessori School, and Mercy High School.
How many private schools are located in Middlesex County?
20 private schools are located in Middlesex County.
How diverse are private schools in Middlesex County?
Middlesex County private schools are approximately 23% minority students, which is lower than the Connecticut private school average of 31%.
What percentage of students in Middlesex County go to private school?
10% of all K-12 students in Middlesex County are educated in private schools (compared to the CT state average of 12%).
What percentage of private schools are religiously affiliated in Middlesex County?
24% of private schools in Middlesex County are religiously affiliated (most commonly Catholic).
Which private schools in Middlesex County are often viewed compared to one another?
Popular comparisons of private schools in Middlesex County include: Montessori Circle Of Friends vs. The Children's Tree Montessori School, Cromwell KinderCare vs. Middlefield Children's Center
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