#1 Largest Private Schools in Stamford, CT
Catholic Academy of Stamford
Independent Catholic school · Grades Pre-K–8
255 students
Stamford, CT
BOverall grade255 students14 students per teacher
2026 lists
Largest Private Schools in Stamford, CT
The private schools in Stamford, CT with the most students. Top 11 of 11 schools.
#2 Largest Private Schools in Stamford, CT
Mater Salvatoris College Preparatory School
Independent Catholic school · Grades Pre-K–8
200 students
Stamford, CT
A+Overall grade200 students6 students per teacher
#3 Largest Private Schools in Stamford, CT
Waterside School
Independent school · Grades Pre-K–5
162 students
Stamford, CT
A+Overall grade162 students4 students per teacher
#4 Largest Private Schools in Stamford, CT
Cardinal Kung Academy
Diocesan school · Grades 7–12
117 students
Stamford, CT
A+Overall grade117 students8 students per teacher
#5 Largest Private Schools in Stamford, CT
The Children's School
Montessori school · Grades K–2
100 students
Stamford, CT
BOverall grade100 students8 students per teacher
#6 Largest Private Schools in Stamford, CT
The Mead School
Independent school · Grades Pre-K–8
80 students
Stamford, CT
A+Overall grade80 students4 students per teacher
#7 Largest Private Schools in Stamford, CT
The Pinnacle School
Special education school · Grades 3–12
73 students
Stamford, CT
AOverall grade73 students2 students per teacher
#8 Largest Private Schools in Stamford, CT
The Long Ridge School
Independent school · Grades Pre-K–5
56 students
Stamford, CT
A-Overall grade56 students5 students per teacher
#9 Largest Private Schools in Stamford, CT
The Spire School
Special education school · Grades 8–12
53 students
Stamford, CT
B+Overall grade53 students3 students per teacher
#10 Largest Private Schools in Stamford, CT
Fusion Academy - Greenwich
Alternative school · Grades 6–12
35 students
Stamford, CT
AOverall grade35 students2 students per teacher
#11 Largest Private Schools in Stamford, CT
Our Lady of Grace Nursery School & Kindergarten
Independent Catholic school · Grades Pre-K–K
20 students
Stamford, CT
B+Overall grade20 students6 students per teacher
From official public records, updated October 2026.