#1 Largest Private Schools in Rensselaer County, NY
La Salle Institute
Independent Catholic school · Grades 6–12
532 students
Troy, NY
B+Overall grade532 students14 students per teacher
2026 lists
Largest Private Schools in Rensselaer County, NY
The private schools in Rensselaer County, NY with the most students. Top 10 of 10 schools.
#2 Largest Private Schools in Rensselaer County, NY
Emma Willard School
Independent school · Grades 9–12
365 students
Troy, NY
AOverall gradeAll girls365 students8 students per teacher
#3 Largest Private Schools in Rensselaer County, NY
Woodland Hill Montessori School
Montessori school · Grades Pre-K–8
243 students
Rensselaer, NY
B+Overall grade243 students6 students per teacher
#4 Largest Private Schools in Rensselaer County, NY
Hoosac School
Episcopal school · Grades 8–12
213 students
Hoosick, NY
B+Overall grade213 students10 students per teacher
#5 Largest Private Schools in Rensselaer County, NY
Robert C Parker School
Independent school · Grades Pre-K–8
114 students
North Greenbush, NY
AOverall grade114 students6 students per teacher
#6 Largest Private Schools in Rensselaer County, NY
Doane Stuart School
Independent school · Grades Pre-K–12
89 students
Rensselaer, NY
A+Overall grade89 students4 students per teacher
#7 Largest Private Schools in Rensselaer County, NY
Vanderheyden Hall
Special education school · Grades 7–12
85 students
Wynantskill, NY
BOverall grade85 students9 students per teacher
#8 Largest Private Schools in Rensselaer County, NY
St. Jude the Apostle School
Diocesan school · Grades Pre-K–5
78 students
Wynantskill, NY
B+Overall grade78 students11 students per teacher
#9 Largest Private Schools in Rensselaer County, NY
Holy Spirit School
Diocesan school · Grades Pre-K–5
66 students
East Greenbush, NY
A+Overall grade66 students7 students per teacher
#10 Largest Private Schools in Rensselaer County, NY
Susan Odell Taylor School for Children
Independent school · Grades Pre-K–8
48 students
Troy, NY
AOverall grade48 students5 students per teacher
From official public records, updated October 2026.