#1 Best Private Schools in Connecticut
Pierrepont School
Independent school · Grades K–12
The only independent school in Westport
Westport, CT
A+Overall grade114 students3 students per teacher
2026 lists
Best Private Schools in Connecticut
Private schools in Connecticut with the highest overall grades. Top 50 of 136 schools.
#2 Best Private Schools in Connecticut
Academy of Our Lady of Mercy, Lauralton Hall
Independent Catholic school · Grades 9–12
The only all-girls school in Milford
Milford, CT
A+Overall gradeAll girls238 students9 students per teacher
#3 Best Private Schools in Connecticut
Westover School
Independent school · Grades 9–12
96% of graduates go to four-year colleges
Middlebury, CT
A+Overall gradeAll girls142 students5 students per teacher
#4 Best Private Schools in Connecticut
Putnam Science Academy
Independent school · Grades 8–12
100% of graduates go to four-year colleges
Putnam, CT
A+Overall grade130 students6 students per teacher
#5 Best Private Schools in Connecticut
Kent School
Episcopal school · Grades 9–12
The largest of 26 Christian schools in Connecticut
Kent, CT
A+Overall grade516 students8 students per teacher
#6 Best Private Schools in Connecticut
The Foote School
Independent school · Grades K–9
Smaller classes than 83% of independent schools in Connecticut
New Haven, CT
A+Overall grade426 students4 students per teacher
#7 Best Private Schools in Connecticut
The Cheshire Academy
Independent school · Grades 9–12
100% of graduates go to four-year colleges
Cheshire, CT
A+Overall grade341 students6 students per teacher
#8 Best Private Schools in Connecticut
Sacred Heart Academy
Independent Catholic school · Grades 9–12
The only all-girls school in Hamden
Hamden, CT
A+Overall gradeAll girls316 students10 students per teacher
#9 Best Private Schools in Connecticut
The Master's School
Christian school (nondenominational) · Grades Pre-K–12
Smaller classes than 77% of Christian schools in Connecticut
West Simsbury, CT
A+Overall grade162 students6 students per teacher
#10 Best Private Schools in Connecticut
St. Thomas More School
Independent school · Grades 8–12
98% of graduates go to four-year colleges
Oakdale, CT
A+Overall grade143 students6 students per teacher
#11 Best Private Schools in Connecticut
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
#12 Best Private Schools in Connecticut
Salisbury School
Episcopal school · Grades 9–12
100% of graduates go to four-year colleges
Salisbury, CT
A+Overall gradeAll boys319 students8 students per teacher
#13 Best Private Schools in Connecticut
Mater Salvatoris College Preparatory School
Independent Catholic school · Grades Pre-K–8
Smaller classes than 96% of Catholic schools in Connecticut
Stamford, CT
A+Overall grade200 students6 students per teacher
#14 Best Private Schools in Connecticut
St. Mary School
Diocesan school · Grades Pre-K–8
Smaller classes than 86% of Catholic schools in Connecticut
Ridgefield, CT
A+Overall grade194 students8 students per teacher
#15 Best Private Schools in Connecticut
St. Joseph School
Parish school · Grades K–8
Smaller classes than 74% of Catholic schools in Connecticut
New London, CT
A+Overall grade129 students10 students per teacher
#16 Best Private Schools in Connecticut
The Hotchkiss School
Independent school · Grades 9–12
100% of graduates go to four-year colleges
Lakeville, CT
A+Overall grade602 students6 students per teacher
#17 Best Private Schools in Connecticut
St. Theresa School
Diocesan school · Grades Pre-K–8
The smallest classes of any Catholic school in Trumbull
Trumbull, CT
A+Overall grade177 students13 students per teacher
#18 Best Private Schools in Connecticut
St. James School
Parish school · Grades Pre-K–8
Smaller classes than 64% of Catholic schools in Connecticut
Stratford, CT
A+Overall grade212 students12 students per teacher
#19 Best Private Schools in Connecticut
Whitby School
Montessori school · Grades Pre-K–8
The only Montessori school in Greenwich
Greenwich, CT
A+Overall grade253 students3 students per teacher
#20 Best Private Schools in Connecticut
Holy Trinity Catholic Academy
Diocesan school · Grades Pre-K–8
Smaller classes than 82% of Catholic schools in Connecticut
Shelton, CT
A+Overall grade120 students9 students per teacher
#21 Best Private Schools in Connecticut
New England Jewish Academy
Jewish day school · Grades Pre-K–12
Smaller classes than 92% of Jewish day schools nationwide
West Hartford, CT
A+Overall grade101 students4 students per teacher
#22 Best Private Schools in Connecticut
Notre Dame High School
Independent Catholic school · Grades 9–12
98% of graduates go to four-year colleges
West Haven, CT
A+Overall gradeAll boys471 students12 students per teacher
#23 Best Private Schools in Connecticut
Northwest Catholic High School
Diocesan school · Grades 9–12
98% of graduates go to four-year colleges
West Hartford, CT
A+Overall grade401 students11 students per teacher
#24 Best Private Schools in Connecticut
Renbrook School
Independent school · Grades Pre-K–8
Smaller classes than 83% of independent schools in Connecticut
West Hartford, CT
A+Overall grade288 students4 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.