#1 Largest Private Schools in Manchester, CT
East Catholic High School
Diocesan school · Grades 9–12
427 students
Manchester, CT
A+Overall grade427 students10 students per teacher
2026 lists
Largest Private Schools in Manchester, CT
The private schools in Manchester, CT with the most students. Top 7 of 7 schools.
#2 Largest Private Schools in Manchester, CT
St. James School
Parish school · Grades Pre-K–8
352 students
Manchester, CT
BOverall grade352 students16 students per teacher
#3 Largest Private Schools in Manchester, CT
St. Bridget School
Parish school · Grades Pre-K–8
145 students
Manchester, CT
A+Overall grade145 students13 students per teacher
#4 Largest Private Schools in Manchester, CT
The Cornerstone Christian School
Church of the Nazarene school · Grades Pre-K–12
134 students
Manchester, CT
AOverall grade134 students8 students per teacher
#5 Largest Private Schools in Manchester, CT
Clinical Day School - Manchester Memorial Hospital
Special education school · Grades 8–12
40 students
Manchester, CT
B+Overall grade40 students6 students per teacher
#6 Largest Private Schools in Manchester, CT
Adelbrook Academy Manchester
Special education school · Ungraded
36 students
Manchester, CT
B+Overall grade36 students6 students per teacher
#7 Largest Private Schools in Manchester, CT
Community Child Guidance Clinic
Special education school · Grades 1–8
27 students
Manchester, CT
A-Overall grade27 students5 students per teacher
From official public records, updated October 2026.