William Sidney Mount Elementary School
511
Students
12.2:1
S:T Ratio
School Snapshot
Key metrics at a glanceStudent-Teacher Ratiostudents per teacher
12:1
A-
Good
This Week at William Sidney Mount – May 30, 2026
75 students practicing on Varsity Tutors
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School Details
Address
50 Dean Ln, Stony Brook, NY 11790
Phone
(631)730-4300
District
Three Village Central School District
Academic Calendar
2025-2026
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