Westbury High School, Old Westbury NY

Original Research by School Decision on Westbury High School

Westbury High School is a mid-sized secondary school in Old Westbury, an affluent, low-density residential estate village on Long Island's North Shore. The school draws from the Westbury Union Free School District and serves students in grades nine through twelve.

The student body is diverse in its ethnic and economic makeup. A substantial majority of students are Hispanic, with significant populations of Black students and smaller shares of Asian, white, and multiracial students. A substantial share of students qualify for free or reduced-price lunch, a marker of economic need that reflects the real range of household circumstances within the district despite Old Westbury's wealthy overall character. The enrollment is evenly distributed across the four high school grades.

State testing data, a graduation rate, chronic absenteeism figures, and information on course offerings or program breadth were not available for this school. This gap in reported metrics means a parent cannot see how Westbury High performs on state assessments or what its four-year graduation rate looks like. A parent interested in these outcomes should contact the school directly or check the district office, as the state does not appear to publish them in a centralized source for this particular school.

The Westbury Union Free School District, which operates the high school, has taken two recent steps that affect the school experience. In the 2025-26 school year, the district expanded its universal pre-K program to offer both full-day and half-day tuition-free options, a move that strengthens early literacy and kindergarten readiness for younger siblings and future students. In May 2026, district voters approved the use of funds from the capital reserve for facility improvements and upgrades. This matters because the district has documented overcrowding; the funding will support physical plant work that addresses learning spaces.

Old Westbury itself is a car-dependent, private-lot estate village with no downtown or walkable commercial district of its own. Properties sit on large parcels with long private driveways on wooded, rolling terrain. Civic life is anchored by open space, institutional grounds, and the nearby SUNY Old Westbury and NYIT campuses rather than by a town center. The nearest LIRR station is in the adjacent Village of Westbury, roughly twenty miles from Manhattan. The housing market in the area is high-value; homes are substantially more expensive than the state and national average. Supply of homes for sale has grown while demand has moderated somewhat in recent months.

For a parent choosing a high school, the lack of publicly reported assessment and graduation data is a material gap. The school's location in a highly affluent setting, combined with economic diversity in its actual enrollment, creates a distinct peer environment. A parent should reach out to the school or district to understand course breadth, career and technical pathways, college preparation offerings, and recent graduate outcomes to form a fuller picture of what this school provides.

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Academic performance

How students graduate and prepare for what comes next.

Graduation rate (ACGR)

86.0%Cohort of 471 students · Class of 2021

How this school compares to all schools in this state

Each dot is one school’s SY 2020-21 graduation rate, binned by integer rate. Taller columns mean more schools at that rate. This school is highlighted.

1,253 schools plotted. 14 additional schools' rates are federally suppressed and not shown. Data: EDFacts SY 2020-21.

Advanced Placement & IB

13 subjects offered · 2023-24

Each card is one AP or IB subject. The headline number is the share of students scoring 3 or higher on the exam — the threshold for college credit at most universities. The bar below each rate shows the underlying distribution across performance levels.

Score:12· no credit345· extremely well qualified

Math and Computer Science

Calculus AB

16 tested

75.0%

scored 3 or higher

Calculus BC

7 tested

100.0%

scored 3 or higher

Computer Science Principles

11 tested

9.1%

scored 3 or higher

Sciences

Biology

29 tested

51.7%

scored 3 or higher

Chemistry

19 tested

94.7%

scored 3 or higher

Environmental Science

19 tested

26.3%

scored 3 or higher

History and Social Sciences

U.S. History

27 tested

88.9%

scored 3 or higher

World Languages and Cultures

Spanish Language and Culture

53 tested

90.6%

scored 3 or higher

Arts

Studio Art Drawing

4 tested

0.0%

scored 3 or higher

Other

Language and Comp

22 tested

63.6%

scored 3 or higher

Literature and Comp

11 tested

72.7%

scored 3 or higher

Studio Art 2d Design

13 tested

76.9%

scored 3 or higher

U S Government and Politics

38 tested

50.0%

scored 3 or higher

New York Regents Exams

4 courses reported · 2024-25

End-of-course exams required for a New York Regents diploma. Each row shows the cohort size and the share of students scoring at the proficient level or higher.

Course	Students tested	% proficient
Ela	493	74.0%
Social Studies	448	73.0%
Math	370	45.0%
Science	32	91.0%

Graduation rate (ACGR) reflects the federally published Adjusted Cohort Graduation Rate for the most recent year available. We refresh this data annually at the close of each academic year in June. The federal source publishes a banded rate (for example, "90-94%") instead of an exact number for cohorts small enough to risk identifying individual students. The state distribution chart, where shown, plots every school in the state with a published rate or band; schools whose rate is federally suppressed are excluded. Where the federal source publishes a band rather than an exact rate, the school is placed within its band using a stable, ID-derived offset, so its position is consistent across visits.