For the 2025 school year, there are 9 private high schools serving 1,384 students in Middlesex County, CT.
The top ranked private high schools in Middlesex County, CT include Mercy High School, The Oxford Academy, and Xavier High School.
The average acceptance rate is 81%, which is higher than the Connecticut private high school average acceptance rate of 61%.
20% of private high schools in Middlesex County, CT are religiously affiliated (most commonly Catholic).
Top Ranked Middlesex County Private High Schools (2025)
School
Location
Grades
Students
Mercy High School
All-girls (Catholic)
1740 Randolph Road
Middletown, CT 06457
(860) 346-6659
Middletown, CT 06457
(860) 346-6659
Grades: 9-12
| 375 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
60 Hicksville Rd
Cromwell, CT 06416
(860) 635-5801
Cromwell, CT 06416
(860) 635-5801
Grades: 5-12
| 79 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
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
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 high schools in Middlesex County, CT?
The top ranked private high schools in Middlesex County, CT include Mercy High School, The Oxford Academy, and Xavier High School.
How many private high schools are located in Middlesex County?
9 private high schools are located in Middlesex County.
How diverse are private high schools in Middlesex County?
Middlesex County private high schools are approximately 21% minority students, which is lower than the Connecticut private school average of 29%.
What percentage of private high schools are religiously affiliated in Middlesex County?
20% of private high schools in Middlesex County are religiously affiliated (most commonly Catholic).
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