2026 lists

Fastest-Growing Private Schools in Rensselaer County, NY

Private schools in Rensselaer County, NY whose enrollment has grown the most over the past decade. Top 6 of 6 schools.

#1 Fastest-Growing Private Schools in Rensselaer County, NY

Episcopal school · Grades 8–12

Enrollment up 87% in about a decade

Hoosick, NY

B+Overall grade213 students10 students per teacher

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#2 Fastest-Growing Private Schools in Rensselaer County, NY

Independent school · Grades Pre-K–8

Enrollment up 41% in about a decade

North Greenbush, NY

AOverall grade114 students6 students per teacher

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#3 Fastest-Growing Private Schools in Rensselaer County, NY

Montessori school · Grades Pre-K–8

Enrollment up 35% in about a decade

Rensselaer, NY

B+Overall grade243 students6 students per teacher

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#4 Fastest-Growing Private Schools in Rensselaer County, NY

Independent Catholic school · Grades 6–12

Enrollment up 30% in about a decade

Troy, NY

B+Overall grade532 students14 students per teacher

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#5 Fastest-Growing Private Schools in Rensselaer County, NY

Special education school · Grades 7–12

Enrollment up 29% in about a decade

Wynantskill, NY

BOverall grade85 students9 students per teacher

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#6 Fastest-Growing Private Schools in Rensselaer County, NY

Independent school · Grades 9–12

Enrollment up 14% in about a decade

Troy, NY

AOverall gradeAll girls365 students8 students per teacher

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From official public records, updated October 2026.