#1 Best Private Schools in Fairfield, CT
St. Thomas Aquinas Catholic School
Diocesan school · Grades Pre-K–8
The smallest classes of any Catholic school in Fairfield
Fairfield, CT
A+Overall grade293 students7 students per teacher
2026 lists
Best Private Schools in Fairfield, CT
Private schools in Fairfield, CT with the highest overall grades. Top 6 of 6 schools.
#2 Best Private Schools in Fairfield, CT
Assumption Catholic School
Diocesan school · Grades Pre-K–8
Smaller classes than 64% of Catholic schools in Connecticut
Fairfield, CT
A+Overall grade142 students12 students per teacher
#3 Best Private Schools in Fairfield, CT
Fairfield Country Day School
Independent school · Grades K–9
The largest independent school in Fairfield
Fairfield, CT
A+Overall gradeAll boys198 students5 students per teacher
#4 Best Private Schools in Fairfield, CT
Notre Dame Catholic High School
Diocesan school · Grades 9–12
One of the most diverse private schools in Connecticut
Fairfield, CT
A-Overall grade500 students17 students per teacher
#5 Best Private Schools in Fairfield, CT
Fairfield College Preparatory
Independent Catholic school · Grades 9–12
The largest of 70 Catholic schools in Connecticut
Fairfield, CT
BOverall gradeAll boys787 students17 students per teacher
#6 Best Private Schools in Fairfield, CT
The Unquowa School
Independent school · Grades Pre-K–8
Small classes: about 5 students per teacher
Fairfield, CT
BOverall grade142 students5 students per teacher
Grades compare each school's official facts, such as class size, how long it has served families and where graduates go, with similar schools. They're a starting point: visit, ask questions and trust what you see.