#1 Best Private Schools in the Archdiocese of Hartford
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 Private Schools in the Archdiocese of Hartford
Private schools in the Archdiocese of Hartford with the highest overall grades. Top 31 of 31 schools.
#2 Best Private Schools in the Archdiocese of Hartford
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
#3 Best Private Schools in the Archdiocese of Hartford
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
#4 Best Private Schools in the Archdiocese of Hartford
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
#5 Best Private Schools in the Archdiocese of Hartford
St. Luke Catholic School
Parish school · Grades Pre-K–8
Smaller classes than 92% of Catholic schools in Connecticut
Southington, CT
A+Overall grade71 students7 students per teacher
#6 Best Private Schools in the Archdiocese of Hartford
St. Martin De Porres Academy
Independent Catholic school · Grades 5–8
Smaller classes than 78% of Catholic schools in Connecticut
New Haven, CT
A+Overall grade72 students9 students per teacher
#7 Best Private Schools in the Archdiocese of Hartford
St. Matthew School
Diocesan school · Grades Pre-K–8
The smallest classes of any Catholic school in Bristol
Bristol, CT
A+Overall grade142 students10 students per teacher
#8 Best Private Schools in the Archdiocese of Hartford
St. Bridget School
Parish school · Grades Pre-K–8
Serving families in Manchester since at least 2011
Manchester, CT
A+Overall grade145 students13 students per teacher
#9 Best Private Schools in the Archdiocese of Hartford
Canterbury School
Independent Catholic school · Grades 8–12
Smaller classes than 88% of Catholic schools in Connecticut
New Milford, CT
A+Overall grade406 students6 students per teacher
#10 Best Private Schools in the Archdiocese of Hartford
East Catholic High School
Diocesan school · Grades 9–12
The smallest classes of any Catholic school in Manchester
Manchester, CT
A+Overall grade427 students10 students per teacher
#11 Best Private Schools in the Archdiocese of Hartford
St. Mary Magdalen School
Parish school · Grades Pre-K–4
Smaller classes than 80% of Catholic schools in Connecticut
Oakville, CT
A+Overall grade137 students9 students per teacher
#12 Best Private Schools in the Archdiocese of Hartford
St. Rita School
Parish school · Grades Pre-K–8
Serving families in Hamden since at least 2011
Hamden, CT
AOverall grade313 students13 students per teacher
#13 Best Private Schools in the Archdiocese of Hartford
St. Timothy Middle School
Diocesan school · Grades 6–8
Serving families in West Hartford since at least 2011
West Hartford, CT
AOverall grade94 students13 students per teacher
#14 Best Private Schools in the Archdiocese of Hartford
St. Joseph School
Parish school · Grades Pre-K–8
Serving families in Bristol since at least 2011
Bristol, CT
AOverall grade171 students13 students per teacher
#15 Best Private Schools in the Archdiocese of Hartford
All Saints Catholic Academy
Independent Catholic school · Grades K–8
One of 2 Catholic schools in New Haven
New Haven, CT
A-Overall grade150 students13 students per teacher
#16 Best Private Schools in the Archdiocese of Hartford
St. Mary's School
Parish school · Grades Pre-K–8
The only Catholic school in Simsbury
Simsbury, CT
A-Overall grade197 students13 students per teacher
#17 Best Private Schools in the Archdiocese of Hartford
East Shoreline Catholic Academy
Parish school · Grades Pre-K–8
Smaller classes than 70% of Catholic schools in Connecticut
Branford, CT
B+Overall grade173 students11 students per teacher
#18 Best Private Schools in the Archdiocese of Hartford
St. Paul School
Diocesan school · Grades Pre-K–8
Serving families in Kensington since at least 2011
Kensington, CT
B+Overall grade180 students14 students per teacher
#19 Best Private Schools in the Archdiocese of Hartford
Holy Cross High School
Independent Catholic school · Grades 9–12
Serving families in Waterbury since at least 2011
Waterbury, CT
B+Overall grade495 students13 students per teacher
#20 Best Private Schools in the Archdiocese of Hartford
St. Lawrence School
Diocesan school · Grades Pre-K–8
Serving families in West Haven since at least 2011
West Haven, CT
B+Overall grade172 students18 students per teacher
#21 Best Private Schools in the Archdiocese of Hartford
St. John's School
Parish school · Grades 5–8
One of 2 Catholic schools in Watertown
Watertown, CT
B+Overall grade101 students13 students per teacher
#22 Best Private Schools in the Archdiocese of Hartford
Assumption School
Parish school · Grades Pre-K–8
Serving families in Ansonia since at least 2011
Ansonia, CT
B+Overall grade163 students14 students per teacher
#23 Best Private Schools in the Archdiocese of Hartford
St. John the Evangelist School
Diocesan school · Grades 5–8
Serving families in Watertown since at least 2011
Watertown, CT
B+Overall grade101 students14 students per teacher
#24 Best Private Schools in the Archdiocese of Hartford
St. Bernard School
Parish school · Grades K–8
Serving families in Enfield since at least 2011
Enfield, CT
B+Overall grade183 students14 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.