2026 lists
Private schools in Mercer County, NJ with elementary grades and the highest overall grades. Top 14 of 14 schools.
#1 Best Private Elementary Schools in Mercer County, NJ
Independent Catholic school · Grades Pre-K–12
The only all-girls school in Princeton
Princeton, NJ
#2 Best Private Elementary Schools in Mercer County, NJ
Diocesan school · Grades Pre-K–8
The smallest classes of any Catholic school in Hamilton
Hamilton, NJ
#3 Best Private Elementary Schools in Mercer County, NJ
Independent Catholic school · Grades K–12
100% of graduates go to four-year colleges
Hamilton, NJ
#4 Best Private Elementary Schools in Mercer County, NJ
Independent school · Grades Pre-K–12
One of the 3 largest independent schools in New Jersey
Princeton, NJ
#5 Best Private Elementary Schools in Mercer County, NJ
Quaker (Friends) school · Grades Pre-K–8
Smaller classes than 89% of Christian schools in New Jersey
Princeton, NJ
#6 Best Private Elementary Schools in Mercer County, NJ
Diocesan school · Grades Pre-K–8
Smaller classes than 60% of Catholic schools in New Jersey
Lawrenceville, NJ
#7 Best Private Elementary Schools in Mercer County, NJ
Independent school · Grades Pre-K–8
Small classes: about 6 students per teacher
Princeton, NJ
#8 Best Private Elementary Schools in Mercer County, NJ
Parish school · Grades Pre-K–8
Smaller classes than 68% of Catholic schools in New Jersey
Princeton, NJ
#9 Best Private Elementary Schools in Mercer County, NJ
Parish school · Grades Pre-K–8
Serving families in Mercerville since at least 2011
Mercerville, NJ
#10 Best Private Elementary Schools in Mercer County, NJ
Independent Catholic school · Grades Pre-K–8
Serving families in Hamilton since at least 2011
Hamilton, NJ
#11 Best Private Elementary Schools in Mercer County, NJ
Parish school · Grades Pre-K–8
The largest Catholic school in Hamilton
Hamilton, NJ
#12 Best Private Elementary Schools in Mercer County, NJ
Independent school · Grades Pre-K–12
One school from pre-K through 12th grade
Hightstown, NJ
#13 Best Private Elementary Schools in Mercer County, NJ
Independent school · Grades Pre-K–12
One school from pre-K through 12th grade
Highstown, NJ
#14 Best Private Elementary Schools in Mercer County, NJ
Baptist school · Grades Pre-K–8
The only Christian school in Hamilton
Hamilton, NJ
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.