#1 Largest Private Schools in Fairfield, CT
Fairfield College Preparatory
Independent Catholic school · Grades 9–12
787 students
Fairfield, CT
BOverall gradeAll boys787 students17 students per teacher
2026 lists
Largest Private Schools in Fairfield, CT
The private schools in Fairfield, CT with the most students. Top 7 of 7 schools.
#2 Largest Private Schools in Fairfield, CT
Notre Dame Catholic High School
Diocesan school · Grades 9–12
500 students
Fairfield, CT
A-Overall grade500 students17 students per teacher
#3 Largest Private Schools in Fairfield, CT
St. Thomas Aquinas Catholic School
Diocesan school · Grades Pre-K–8
293 students
Fairfield, CT
A+Overall grade293 students7 students per teacher
#4 Largest Private Schools in Fairfield, CT
Fairfield Country Day School
Independent school · Grades K–9
198 students
Fairfield, CT
A+Overall gradeAll boys198 students5 students per teacher
#5 Largest Private Schools in Fairfield, CT
Assumption Catholic School
Diocesan school · Grades Pre-K–8
142 students
Fairfield, CT
A+Overall grade142 students12 students per teacher
#6 Largest Private Schools in Fairfield, CT
The Unquowa School
Independent school · Grades Pre-K–8
142 students
Fairfield, CT
BOverall grade142 students5 students per teacher
#7 Largest Private Schools in Fairfield, CT
Fusion Academy FF: Fairfield
Alternative school · Grades 8–12
32 students
Fairfield, CT
A-Overall grade32 students2 students per teacher
From official public records, updated October 2026.