#1 Best Catholic Schools in Mercer County, NJ
Stuart Country Day School of the Sacred Heart
Independent Catholic school · Grades Pre-K–12
The only all-girls school in Princeton
Princeton, NJ
A+Overall gradeAll girls283 students4 students per teacher
2026 lists
Best Catholic Schools in Mercer County, NJ
The highest-graded schools of this kind in Mercer County, NJ. Top 11 of 11 schools.
#2 Best Catholic Schools in Mercer County, NJ
Villa Victoria Academy
Independent Catholic school · Grades 6–12
Smaller classes than 90% of Catholic schools nationwide
Ewing, NJ
A+Overall gradeAll girls94 students6 students per teacher
#3 Best Catholic Schools in Mercer County, NJ
St. Raphael School
Diocesan school · Grades Pre-K–8
The smallest classes of any Catholic school in Hamilton
Hamilton, NJ
A+Overall grade138 students9 students per teacher
#4 Best Catholic Schools in Mercer County, NJ
Trenton Catholic Preparatory Academy-Upper
Independent Catholic school · Grades K–12
100% of graduates go to four-year colleges
Hamilton, NJ
A+Overall grade399 students10 students per teacher
#5 Best Catholic Schools in Mercer County, NJ
Villa Victoria Lower School
Independent Catholic school · Grades 6–12
Smaller classes than 92% of Catholic schools nationwide
Trenton, NJ
A+Overall gradeAll girls95 students5 students per teacher
#6 Best Catholic Schools in Mercer County, NJ
St. Ann Elementary School
Diocesan school · Grades Pre-K–8
Smaller classes than 60% of Catholic schools in New Jersey
Lawrenceville, NJ
A+Overall grade177 students11 students per teacher
#7 Best Catholic Schools in Mercer County, NJ
St. Paul School of Princeton
Parish school · Grades Pre-K–8
Smaller classes than 68% of Catholic schools in New Jersey
Princeton, NJ
A+Overall grade245 students10 students per teacher
#8 Best Catholic Schools in Mercer County, NJ
Our Lady of Sorrows School
Parish school · Grades Pre-K–8
Serving families in Mercerville since at least 2011
Mercerville, NJ
A-Overall grade168 students12 students per teacher
#9 Best Catholic Schools in Mercer County, NJ
Trenton Catholic Preparatory Academy Lower School
Independent Catholic school · Grades Pre-K–8
Serving families in Hamilton since at least 2011
Hamilton, NJ
A-Overall grade226 students14 students per teacher
#10 Best Catholic Schools in Mercer County, NJ
Notre Dame High School
Diocesan school · Grades 9–12
99% of graduates go to four-year colleges
Lawrenceville, NJ
B+Overall grade894 students13 students per teacher
#11 Best Catholic Schools in Mercer County, NJ
St. Gregory the Great Academy
Parish school · Grades Pre-K–8
The largest Catholic school in Hamilton
Hamilton, NJ
B+Overall grade410 students10 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.