Islip High School, Islip NY - Test Scores & Data

Original Research by School Decision on Islip High School

Islip High School serves a mid-sized cohort of students in grades nine through twelve in the hamlet of Islip, a waterfront residential community on the South Shore of Long Island. The school sits in a neighborhood organized around tree-lined streets, a walkable Main Street with shops and restaurants, and bay access, with an older housing stock alongside newer construction. The broader Town of Islip, which includes several hamlets, is positioned as a regional economic development center anchored by MacArthur Airport and industrial corridors, though the hamlet itself draws its character from residential life and small commercial activity.

The student body reflects the demographic fabric of Long Island's middle-income suburban corridor. A substantial share of enrolled students are Hispanic, followed by white students, with smaller Asian and Black populations. About two-fifths of the enrollment qualifies for free or reduced-price lunch, suggesting moderate economic diversity within the school's catchment.

State assessment data was not available for this school, and the district's four-year graduation rate was not reported in the materials provided. Without those metrics, a prospective parent cannot see how Islip High School's academic proficiency compares to peer schools in Suffolk County or statewide. A parent may want to contact the school or district directly for recent state exam results and graduation outcomes to ground a decision.

What is documented is curriculum breadth and access. The district has expanded college-credit pathways, including a new dual-enrollment Real Estate course at the high school, allowing students to earn college credit while still enrolled. The district offers other dual-enrollment and career pathways, though the full slate of Advanced Placement, career and technical offerings, or specialized programs was not detailed in available sources. Again, the school's website or an admissions conversation would fill that picture.

At the district level, a family should know about fiscal pressure. Voters rejected the district's proposed budget for the 2026-27 school year, a defeat that signals taxpayer resistance to an above-cap levy increase. If the district moves to a contingency budget, cuts often affect athletics, clubs, equipment, and enrichment activities rather than core instruction. This is not unusual for districts on Long Island facing property-tax and state-aid constraints, but it is a factor a family weighing relocation or enrollment would want to monitor as the budget process unfolds.

The housing market in the Islip ZIP code is mid-to-upper range for Long Island, with home values and rental costs reflecting the region's affordability pressures. The market is showing modest volatility, with active listings and pending sales fluctuating seasonally, and days on market ranging downward recently, suggesting moderate liquidity. This is neither a hot seller's market nor a buyer's advantage; it is a stable suburban market with typical suburban frictions.

Islip High School is a conventional public high school with no charter, magnet, or specialized admission structure. It draws students primarily from its attendance zone and operates within a standard secondary curriculum. For a family seeking a straightforward four-year high school experience with access to college-credit options and standard extracurriculars, and who value a school embedded in an older, walkable, water-oriented neighborhood with easy LIRR access to New York City, the school fits a common Long Island profile. The gaps in published performance data and the district's current budget challenge are the chief items to investigate further before committing to a move.

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Academic performance

How students graduate and prepare for what comes next.

Graduation rate (ACGR)

97.0%Cohort of 262 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

19 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

37 tested

81.1%

scored 3 or higher

Calculus BC

7 tested

100.0%

scored 3 or higher

Computer Science A

17 tested · Grade 10

17.6%

scored 3 or higher

Statistics

19 tested

52.6%

scored 3 or higher

Sciences

Biology

16 tested

43.8%

scored 3 or higher

Chemistry

11 tested

54.5%

scored 3 or higher

Environmental Science

72 tested · Grade 9

22.2%

scored 3 or higher

Physics 1

26 tested

46.2%

scored 3 or higher

English

Research

14 tested

100.0%

scored 3 or higher

Seminar

40 tested · Grade 10

90.0%

scored 3 or higher

History and Social Sciences

European History

37 tested · Grade 10

97.3%

scored 3 or higher

Human Geography

35 tested · Grade 9, Grade 10

62.9%

scored 3 or higher

Psychology

50 tested

80.0%

scored 3 or higher

U.S. History

62 tested

82.3%

scored 3 or higher

World Languages and Cultures

Italian Language and Culture

10 tested

10.0%

scored 3 or higher

Spanish Language and Culture

27 tested

85.2%

scored 3 or higher

Other

Language and Comp

91 tested

31.9%

scored 3 or higher

Literature and Comp

36 tested

91.7%

scored 3 or higher

U S Government and Politics

39 tested

87.2%

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	253	89.0%
Math	239	55.0%
Social Studies	234	93.0%
Science	144	56.0%

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.