WILLIAM SIDNEY MOUNT ELEMENTARY SCHOOL (THREE VILLAGE CENTRAL SCHOOL DISTRICT SCH DIST.), New York - School Profile in 2023-2024 School Year
Updated on August 8, 2025.
WILLIAM SIDNEY MOUNT ELEMENTARY SCHOOL is a Elementary in STONY BROOK, NY. It currently serves 514 students (grades PK-06). The school is part of the THREE VILLAGE CENTRAL SCHOOL DISTRICT School District.
Below, we provide details about the school including the population per grade, the racial demography of the student population, the racial demography of the student population per gender/sex, and the racial demography per grade level.
You can see similar information for other schools in THREE VILLAGE CENTRAL SCHOOL DISTRICT School District and all schools in New York.
Other Details
School Type: Regular School
School Level: Elementary
Number of Students:514
Number of Teachers: 38
Student/Teacher Ratio: 13.58
Location Info
Location: 50 DEAN LN, STONY BROOK, NY 11790
Mailing Address: PO BOX 9050, EAST SETAUKET, NY 11733-9050
Phone: (631)730-4300
Website: http://www.threevillagecsd.org
Data Source: NCES.
Student Population Per Grade
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| Grade | Population |
|---|---|
| Grade 1 | 57 |
| Grade 2 | 72 |
| Grade 3 | 78 |
| Grade 4 | 68 |
| Grade 5 | 73 |
| Grade 6 | 75 |
| Kindergarten | 59 |
| Pre-Kindergarten | 32 |
Gender/Sex of WILLIAM SIDNEY MOUNT ELEMENTARY SCHOOL Student Population
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| Gender | Population | Percent of Population (%) |
|---|---|---|
| Male | 261 | 50.78 |
| Female | 253 | 49.22 |
Race/Ethnicity Demography of WILLIAM SIDNEY MOUNT ELEMENTARY SCHOOL Student Population
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| Race/Ethnicity | Population | Percent of Population (%) |
|---|---|---|
| Asian | 122 | 23.74 |
| Black or African American | 8 | 1.56 |
| Hispanic/Latino | 66 | 12.84 |
| Two or more races | 26 | 5.06 |
| White | 292 | 56.81 |
Male - Race/Ethnicity Demography of Student Population
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| Race/Ethnicity | Population | Percent of Population (%) |
|---|---|---|
| Asian | 59 | 22.61 |
| Black or African American | 4 | 1.53 |
| Hispanic/Latino | 30 | 11.49 |
| Two or more races | 9 | 3.45 |
| White | 159 | 60.92 |
Female - Race/Ethnicity Demography of Student Population
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| Race/Ethnicity | Population | Percent of Population (%) |
|---|---|---|
| Asian | 63 | 24.90 |
| Black or African American | 4 | 1.58 |
| Hispanic/Latino | 36 | 14.23 |
| Two or more races | 17 | 6.72 |
| White | 133 | 52.57 |
Race Demography Per Grade
The tables below shows the Race/Ethnicity of the student population per grade.Grade 1 - Race/Ethnicity of Both Genders
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| Race/Ethnicity | Population | Percent of Population (%) |
|---|---|---|
| Asian | 16 | 28.07 |
| Black or African American | 1 | 1.75 |
| Hispanic/Latino | 4 | 7.02 |
| Two or more races | 4 | 7.02 |
| White | 32 | 56.14 |
Grade 2 - Race/Ethnicity of Both Genders
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| Race/Ethnicity | Population | Percent of Population (%) |
|---|---|---|
| Asian | 17 | 23.61 |
| Black or African American | 2 | 2.78 |
| Hispanic/Latino | 9 | 12.50 |
| Two or more races | 5 | 6.94 |
| White | 39 | 54.17 |
Grade 3 - Race/Ethnicity of Both Genders
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| Race/Ethnicity | Population | Percent of Population (%) |
|---|---|---|
| Asian | 22 | 28.21 |
| Hispanic/Latino | 11 | 14.10 |
| Two or more races | 3 | 3.85 |
| White | 42 | 53.85 |
Grade 4 - Race/Ethnicity of Both Genders
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| Race/Ethnicity | Population | Percent of Population (%) |
|---|---|---|
| Asian | 19 | 27.94 |
| Hispanic/Latino | 4 | 5.88 |
| Two or more races | 3 | 4.41 |
| White | 42 | 61.77 |
Grade 5 - Race/Ethnicity of Both Genders
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| Race/Ethnicity | Population | Percent of Population (%) |
|---|---|---|
| Asian | 17 | 23.29 |
| Black or African American | 1 | 1.37 |
| Hispanic/Latino | 10 | 13.70 |
| Two or more races | 1 | 1.37 |
| White | 44 | 60.27 |
Grade 6 - Race/Ethnicity of Both Genders
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| Race/Ethnicity | Population | Percent of Population (%) |
|---|---|---|
| Asian | 16 | 21.33 |
| Black or African American | 3 | 4.00 |
| Hispanic/Latino | 13 | 17.33 |
| Two or more races | 3 | 4.00 |
| White | 40 | 53.33 |
Kindergarten - Race/Ethnicity of Both Genders
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| Race/Ethnicity | Population | Percent of Population (%) |
|---|---|---|
| Asian | 11 | 18.64 |
| Black or African American | 1 | 1.70 |
| Hispanic/Latino | 12 | 20.34 |
| Two or more races | 7 | 11.86 |
| White | 28 | 47.46 |
Pre-Kindergarten - Race/Ethnicity of Both Genders
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| Race/Ethnicity | Population | Percent of Population (%) |
|---|---|---|
| Asian | 4 | 12.50 |
| Hispanic/Latino | 3 | 9.38 |
| White | 25 | 78.13 |
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