Ellerna is built in Vancouver, on the traditional, ancestral and unceded territories of the xʷməθkʷəy̓əm (Musqueam), Sḵwx̱wú7mesh (Squamish) and səl̓ilw̓ətaʔɬ (Tsleil-Waututh) Nations.

William Sidney Mount Elementary School

Elementary · Kindergarten · Stony Brook

Out-of-school care, kindergarten · Out-of-school care, grade 1 to age 12

Unclaimed

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Where

Address: 50 DEAN LN
Stony Brook NY 11790
Phone: (631) 730-4300
Website: http://www.threevillagecsd.org

Who it is for

Type: Public school
School type: Regular School
Age groups: Out-of-school care, kindergarten, Out-of-school care, grade 1 to age 12
Grades: Pre-kindergarten to grade 6

School details

School board or district: Three Village Central School District
Region: New York

About this listing

From the Common Core of Data, School Directory 2023-24 (National Center for Education Statistics), imported on October 10, 2026. U.S. Department of Education, National Center for Education Statistics, Common Core of Data (CCD), 2023–24.

Dataset: US Dept of Education NCES – Common Core of Data, School Directory 2023-24 (Final v1a), as of October 1, 2023

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