The Oxford Academy Photo - Oxford Academy is set along the vibrant shoreline of Connecticut. Our family style community of students and faculty are stewards to local beaches and waterways. They embrace the many rich offerings of the area including museums, volunteering and athletic competitions with shoreline schools.

Top 3 Best Middlesex County Private High Schools (2025)

For the 2025 school year, there are 9 private high schools serving 1,403 students in Middlesex County, CT.
The top ranked private high schools in Middlesex County, CT include Adelbrook, Mercy High School, and The Oxford Academy.
The average acceptance rate is 87%, which is higher than the Connecticut private high school average acceptance rate of 65%.
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
Adelbrook
Special Education School
(1)
60 Hicksville Rd
Cromwell, CT 06416
(860) 635-5801
Grades: 5-12
| 79 students
Mercy High School
Mercy High School Photo
All-girls (Catholic)
1740 Randolph Road
Middletown, CT 06457
(860) 346-6659
Grades: 9-12
| 394 students
The Oxford Academy
The Oxford Academy Photo - Oxford Academy is set along the vibrant shoreline of Connecticut. Our family style community of students and faculty are stewards to local beaches and waterways. They embrace the many rich offerings of the area including museums, volunteering and athletic competitions with shoreline schools.
All-boys
(4)
1393 Boston Post Road
Westbrook, CT 06498
(860) 399-6247
Grades: 8-12
| 48 students
Xavier High School
All-boys (Catholic)
(3)
181 Randolph Rd
Middletown, CT 06457
(860) 346-7735
Grades: 9-12
| 600 students
Franklin Academy
Franklin Academy Photo - Franklin Academy is nestled on 75 acres in the beautiful Connecticut River Valley
140 River Road
East Haddam, CT 06423
(860) 873-2700
Grades: 8-12
| 85 students
Joshua Center Shoreline Cdt
Special Education School
5 Research Pkwy
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
Grades: 9-12
| 39 students
Northwest Village School
Special Education School
20 Tuttle Pl Ste 4
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
Grades: 9-12
| 8 students
[+] Show Closed Private Schools in Middlesex County, Connecticut

Middlesex County Private Schools (Closed)

School
Location
Grades
Students
5 Saint Johns Sq
Middletown, CT 06457
(860) 347-3202
Grades: K-8
| 114 students
61 Durant Ter
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 Adelbrook, Mercy High School, and The Oxford Academy.
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 22% minority students, which is lower than the Connecticut private school average of 30%.
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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