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William Sidney Mount Elementary School

Stony Brook, NY

PublicElementary · Grades Pre-K–6
threevillagecsd.org50 Dean Ln, Stony Brook, NY 11790(631) 730-4300
Test scores
New York State tests, 2024–25

English language arts

208 tested · 69% of students

59% scored proficient. In 2023–24, 54% did.

  • Level 420%
  • Level 339%
  • Level 226%
  • Level 114%

Math

217 tested · 72% of students

67% scored proficient. In 2023–24, 62% did.

  • Level 419%
  • Level 348%
  • Level 224%
  • Level 19%

Science

57 tested · 74% of students

67% scored proficient. In 2023–24, 59% did.

  • Level 412%
  • Level 354%
  • Level 232%
  • Level 12%

Proficient means Level 3 or 4, out of the students tested.

Safety incidents
New York State Education Department
Measure2022–232023–24
Enrolled511513
Harassment, bullying, discrimination43
Cyberbullying03

None reported: Homicide, sexual offense, assault, weapons possession, bomb threat, false alarm, drugs, alcohol, other threats.

Discipline
U.S. Department of Education

1.5% of students were suspended out of school at least once in 2023–24.

Measure2021–222023–24
Enrolled in the fall468480
Suspended out of school0.2% · 11.5% · 7
Suspended in school0.9% · 42.1% · 10
Expelled0.0% · 00.0% · 0
School Profile

Location

Suburb, Large

Enrollment

514 students

Student-Teacher Ratio

14:1

Demographics
Hispanic/Latino12.8%
x
White56.8%
x
Black or African American1.6%
x
Asian23.7%
x
Two or More Races5.1%
x
American Indian or Alaska Native0.0%
x
Native Hawaiian or Pacific Islander0.0%
x
Public school directory

NCES ID 362820003810

District
Three Village Central School District
Status
Open
School category
Regular School
Charter
No
Virtual instruction
No virtual instruction
Enrollment
514 students
Teachers (FTE)
37.8

Sources