#1 Private Schools with the Smallest Classes in Fairfield, CT
Fairfield Country Day School
Independent school · Grades K–9
5 students per teacher
Fairfield, CT
A+Overall gradeAll boys198 students5 students per teacher
2026 lists
Private Schools with the Smallest Classes in Fairfield, CT
Private schools in Fairfield, CT with the fewest students per teacher (not counting preschools and special education schools). Top 6 of 6 schools.
#2 Private Schools with the Smallest Classes in Fairfield, CT
The Unquowa School
Independent school · Grades Pre-K–8
5.3 students per teacher
Fairfield, CT
BOverall grade142 students5 students per teacher
#3 Private Schools with the Smallest Classes in Fairfield, CT
St. Thomas Aquinas Catholic School
Diocesan school · Grades Pre-K–8
7.3 students per teacher
Fairfield, CT
A+Overall grade293 students7 students per teacher
#4 Private Schools with the Smallest Classes in Fairfield, CT
Assumption Catholic School
Diocesan school · Grades Pre-K–8
11.5 students per teacher
Fairfield, CT
A+Overall grade142 students12 students per teacher
#5 Private Schools with the Smallest Classes in Fairfield, CT
Notre Dame Catholic High School
Diocesan school · Grades 9–12
16.9 students per teacher
Fairfield, CT
A-Overall grade500 students17 students per teacher
#6 Private Schools with the Smallest Classes in Fairfield, CT
Fairfield College Preparatory
Independent Catholic school · Grades 9–12
17.1 students per teacher
Fairfield, CT
BOverall gradeAll boys787 students17 students per teacher
From official public records, updated October 2026.