Syosset Senior High School, Syosset NY

Original Research by School Decision on Syosset Senior High School

Syosset Senior High School serves the affluent Long Island suburbs north of Manhattan, drawing students from a well-resourced residential community and educating them across grades nine through twelve. The school has an enrollment of around twenty-four hundred students. Demographically, the student body skews toward Asian and white students, with meaningful representation of Hispanic students and smaller percentages of other backgrounds. About one in seven students qualify for free or reduced-price lunch, suggesting a student population with mixed economic circumstances within an overall affluent district.

State testing data was not available for this school. This absence reflects that Syosset Senior High is a grades 9-12 high school; New York administers state assessments in mathematics and English language arts to grades 3 through 8 only, and science in grades 4, 8, and high school. Proficiency numbers therefore cannot be reported for most grade levels at a high school. A parent looking to understand academic performance here would need to consult graduation rates, college admissions outcomes, Advanced Placement offerings, and school-specific testing if available, none of which appear in the data provided.

The community itself is a car-dependent residential hamlet roughly thirty to thirty-two miles east of Manhattan, characterized by tree-lined streets, well-maintained homes, and high housing values. The median home price in the local zipcode sits in the mid-range for Nassau County, with a year-over-year increase. Median household income in the area is near the national average. Commercial life centers on a small downtown near the Long Island Rail Road station, with retail corridors along major roads and a modest office and industrial base. Residents value the schools, the diversity reflected in local businesses and restaurants, and family-oriented community events. Walkability is limited outside the downtown core; daily errands typically require a car.

The school district recently passed a substantial facilities improvement bond in October 2024, funding major capital work across its aging buildings. Syosset Senior High itself will receive roofing replacements, HVAC renovations, locker room and pool renovations, and artificial turf fields. This capital work addresses deferred maintenance but extends the district's debt service over a long period, carrying real implications for the tax bill families in the area will face. Beginning in the 2025-2026 school year, the district also implemented New York State's distraction-free schools law, a complete ban on personal internet-enabled devices—smartphones, smartwatches, and tablets—throughout the school day, including lunch and passing periods. This shifts classroom culture and student behavior in a direct, everyday way.

The school is positioned at the median or below among the county's districts on overall proficiency where state-tested grades exist. A parent would want to examine the school's college-going record, AP course breadth, vocational or career pathways, and any available school-level assessment data to build a fuller picture of academic trajectory and college readiness. The housing market shows steady appreciation and moderate supply, typical of an established suburban district where families are staying and building.

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Academic performance

State test results and graduation outcomes.

Graduation rate (ACGR)

>=99%Cohort of 531 students · Class of 2021

The federal source publishes a banded range instead of an exact rate when the graduating cohort is small enough that an exact number could risk identifying individual students.

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

34 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

209 tested · Grade 10

90.9%

scored 3 or higher

Calculus BC

46 tested · Grade 10

97.8%

scored 3 or higher

Computer Science A

53 tested · Grade 10

81.1%

scored 3 or higher

Computer Science Principles

54 tested · Grade 9, Grade 10

83.3%

scored 3 or higher

Precalculus

137 tested · Grade 9, Grade 10

97.8%

scored 3 or higher

Statistics

96 tested · Grade 9, Grade 10

82.3%

scored 3 or higher

Sciences

Biology

182 tested · Grade 10

92.9%

scored 3 or higher

Chemistry

60 tested

98.3%

scored 3 or higher

Environmental Science

135 tested

86.7%

scored 3 or higher

Physics 1

155 tested · Grade 9, Grade 10

78.1%

scored 3 or higher

Physics C: Electricity and Magnetism

42 tested · Grade 10

66.7%

scored 3 or higher

Physics C: Mechanics

42 tested · Grade 10

83.3%

scored 3 or higher

History and Social Sciences

Comparative Government and Politics

45 tested

75.6%

scored 3 or higher

European History

55 tested · Grade 10

96.4%

scored 3 or higher

Human Geography

140 tested · Grade 10

71.4%

scored 3 or higher

Macroeconomics

91 tested

80.2%

scored 3 or higher

Microeconomics

219 tested · Grade 10

69.4%

scored 3 or higher

Psychology

190 tested · Grade 9, Grade 10

85.8%

scored 3 or higher

U.S. History

377 tested · Grade 9

92.0%

scored 3 or higher

World Languages and Cultures

Chinese Language and Culture

2 tested

0.0%

scored 3 or higher

French Language and Culture

18 tested

66.7%

scored 3 or higher

German Language and Culture

1 tested

0.0%

scored 3 or higher

Italian Language and Culture

14 tested

100.0%

scored 3 or higher

Spanish Language and Culture

39 tested

100.0%

scored 3 or higher

Spanish Literature and Culture

3 tested

0.0%

scored 3 or higher

Arts

Art History

20 tested · Grade 10

55.0%

scored 3 or higher

Music Theory

13 tested · Grade 9, Grade 10

53.8%

scored 3 or higher

Studio Art Drawing

41 tested · Grade 10

92.7%

scored 3 or higher

Other

Language and Comp

291 tested · Grade 10

82.5%

scored 3 or higher

Literature and Comp

138 tested

94.2%

scored 3 or higher

Studio Art 2d Design

15 tested

93.3%

scored 3 or higher

Studio Art 3d Design

1 tested

0.0%

scored 3 or higher

U S Government and Politics

207 tested

94.2%

scored 3 or higher

World History

260 tested · Grade 9, Grade 10

95.8%

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	605	99.0%
Social Studies	597	98.0%
Math	593	99.0%
Science	61	84.0%

Math

Grade 80%

School 0% · District 35% · ▼ 35 pts below district

▼ 37 pts below state median · ▼ 38 pts below county median

English language arts

Grade 80%

School 0% · District 80% · ▼ 80 pts below district

▼ 48 pts below state median · ▼ 56 pts below county median

Science

Grade 80%

School 0% · District 33% · ▼ 33 pts below district

▼ 33 pts below state median · ▼ 21 pts below county median

This schoolSYOSSET CENTRAL SCHOOL DISTRICT, same grade

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.