WILLIAM SIDNEY MOUNT ELEMENTARY SCHOOL is a public elementary school in Stony Brook, Suffolk County, New York. The campus is operated by THREE VILLAGE CENTRAL SCHOOL DISTRICT. Serving students in PK-6, the school enrolls approximately 525 students with 40.2 full-time equivalent teachers, maintaining a student-teacher ratio of 13.1:1 according to federal National Center for Education Statistics (NCES) records for the 2024-2025 school year.
School Information
NCES 2024-2025
Grades Offered
PK-6
School Level
Elementary School
School Type
Regular School
Locale Setting
Suburb: Large
Charter School
No
Operational Status
Open
NCES School ID
362820003810
State Identifier
NY-580201060000-580201060006
County FIPS
36103
Physical Location Address
50 Dean Ln
Stony Brook, NY 11790-2799
Stony Brook, NY 11790-2799
Mailing Address
PO BOX 9050
East Setauket, NY 11733-9050
East Setauket, NY 11733-9050
School District
Parent District
THREE VILLAGE CENTRAL SCHOOL DISTRICT
Operating Schools
8 schools
District Type
Regular Public School District
Central Office
Stony Brook, NY
Location Map
40.894, -73.1364
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