#25 Most Diverse Private Schools in Nassau County, NY
Our Lady of Mercy Academy
Independent Catholic school · Grades 9–12
Largest group: 66% of students
Syosset, NY
A+Overall gradeAll girls195 students7 students per teacher
2026 lists
Most Diverse Private Schools in Nassau County, NY
Private schools in Nassau County, NY with the most varied mix of students. Top 50 of 63 schools.
From official public records, updated October 2026.