#1 Best All-Girls 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
2026 lists
Best All-Girls Schools in Connecticut
The highest-graded schools of this kind in Connecticut. Top 9 of 9 schools.
#2 Best All-Girls 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
#3 Best All-Girls 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
#4 Best All-Girls Schools in Connecticut
Greenwich Academy
Independent school · Grades Pre-K–12
One of the 3 largest independent schools in Connecticut
Greenwich, CT
A+Overall gradeAll girls802 students7 students per teacher
#5 Best All-Girls Schools in Connecticut
Mercy High School
Diocesan school · Grades 9–12
97% of graduates go to four-year colleges
Middletown, CT
AOverall gradeAll girls384 students12 students per teacher
#6 Best All-Girls Schools in Connecticut
Bais Yaakov of Waterbury High School
Jewish day school · Grades 9–12
Smaller classes than 84% of Jewish day schools nationwide
Naugatuck, CT
B+Overall gradeAll girls86 students4 students per teacher
#7 Best All-Girls Schools in Connecticut
Miss Porter's School
Independent school · Grades 9–12
98% of graduates go to four-year colleges
Farmington, CT
B+Overall gradeAll girls336 students7 students per teacher
#8 Best All-Girls Schools in Connecticut
The Ethel Walker School
Independent school · Grades 6–12
The only all-girls school in Simsbury
Simsbury, CT
B+Overall gradeAll girls227 students8 students per teacher
#9 Best All-Girls Schools in Connecticut
Sacred Heart Greenwich
Diocesan school · Grades Pre-K–12
One of the 3 largest Catholic schools in Connecticut
Greenwich, CT
B-Overall gradeAll girls588 students22 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.