#25 Largest Private Schools in Albany County, NY
Castle Island Bilingual Montessori
Montessori school · Grades Pre-K–4
21 students
Albany, NY
A-Overall grade21 students5 students per teacher
2026 lists
Largest Private Schools in Albany County, NY
The private schools in Albany County, NY with the most students. Top 25 of 25 schools.
From official public records, updated October 2026.