#1 Best Independent Schools in Suffolk County, NY
Ross School
Independent school · Grades Pre-K–12
95% of graduates go to four-year colleges
East Hampton, NY
A+Overall grade286 students5 students per teacher
2026 lists
Best Independent Schools in Suffolk County, NY
The highest-graded schools of this kind in Suffolk County, NY. Top 6 of 6 schools.
#2 Best Independent Schools in Suffolk County, NY
Long Island School for the Gifted
Independent school · Grades K–9
Small classes: about 6 students per teacher
Huntington Station, NY
A+Overall grade133 students6 students per teacher
#3 Best Independent Schools in Suffolk County, NY
Harbor Country Day School
Independent school · Grades Pre-K–8
Growing: enrollment up 23% since 2013–14
Saint James, NY
A-Overall grade117 students6 students per teacher
#4 Best Independent Schools in Suffolk County, NY
Peconic Community School
Independent school · Grades Pre-K–8
Growing: enrollment up 103% since 2015–16
Cutchogue, NY
B+Overall grade71 students6 students per teacher
#5 Best Independent Schools in Suffolk County, NY
The Knox School
Independent school · Grades 6–12
100% of graduates go to four-year colleges
Saint James, NY
B+Overall grade112 students24 students per teacher
#6 Best Independent Schools in Suffolk County, NY
Ivy League School
Independent school · Grades Pre-K–8
The only independent school in Smithtown
Smithtown, NY
B+Overall grade84 students6 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.