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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

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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

Mount Elementary Hosts Annual Fancy Lunch for 5th and 6th Graders

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W.S. Mount Elementary School recently hosted its beloved Fancy Lunch, an annual tradition that began in 2016 as a Site-Based Team initiative with support from the Mount PTA. This year’s event marked an exciting expansion, including both fifth and sixth grade students, as they prepare for their transition to middle school.

The event offers students a fun, hands-on opportunity to practice the manners and etiquette they learned during a special presentation. Topics covered included general manners, table etiquette, formal place settings and tips on making respectful introductions in social settings.

Students dressed for the occasion, adding to the sense of formality and celebration. The feedback was overwhelmingly positive, with many students expressing how much they enjoyed the experience and appreciated the chance to learn in such an engaging way.

Date Added: 5/20/2025

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