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W.S. Mount Elementary School

Address: 50 Dean Lane, Stony Brook NY 11790
Main Office: (631) 730-4300
Fax: (631) 730-4313
Principal: Merrilleen Heidrich
Assistant Principal: Lauren Drinkwater
School Hours: 9:25a.m.-3:40p.m.

Exterior photo of WS Mount school building

 

Welcome Letters

2025-2026 Welcome Letters (Coming Soon!)

 

Supplies

2025-2026 Supply Lists

 

Important Phone Numbers

 

School Updates 2024-2025 



Current News

Mount Elementary Students Explore Moon Phases With a Sweet Twist

Mount Elementary Students thumbnail267061

Fifth grade students in Ms. Baldante’s science classes at Mount Elementary recently brought astronomy to life with a hands-on activity. After learning about the phases of the moon, students used Oreo cookies to creatively recreate each phase, combining science and fun in a memorable lesson.

Photos from the classroom show students engaged and enjoying the process as they explored the lunar cycle in a unique – and tasty – way.

Date Added: 6/16/2025

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