Arlington High School, Lagrangeville NY

Original Research by School Decision on Arlington High School

Arlington High School serves students in grades nine through twelve in LaGrangeville, a suburban area in central Dutchess County. The school is part of the Arlington Central School District, which operates across the Town of LaGrange as a traditional public school system.

The school enrolls a student body of moderate size, drawn from a community that has shifted from rural to auto-oriented suburban over the past century. The demographic composition is predominantly white, with meaningful representation of Hispanic, Black, and Asian students. About a quarter of the student body qualifies for free or reduced-price lunch, a figure that reflects broader patterns of economic diversity in the area.

State assessment data for high school grades (nine through twelve) was not available, so no proficiency results appear in the comparison with other Dutchess County districts. This absence of reported testing data is typical for high schools in New York, where state assessment focuses on grades eight and below. As a result, readers looking to understand academic performance in mathematics, English language arts, or other subjects will need to seek additional information directly from the school, such as course offerings, AP course participation, or college enrollment outcomes, which were not provided in the available data.

The housing market around LaGrangeville shows homes at moderate to upper-middle valuation relative to state and national benchmarks. Monthly mortgage payments run notably higher than monthly rents in the area, reflecting the home-purchase premium typical of suburban communities where families own rather than rent. The town itself has long pursued a planned mixed-use Town Center in Freedom Plains intended to add housing and reduce sprawl, though this development has been staged. The neighborhood remains auto-dependent with commercial activity scattered along Route 55 rather than concentrated in a walkable downtown.

Arlington High School sits within a district that has undertaken a significant capital investment. In May 2024, community voters approved a Facilities Bond to fund renovations, new construction, and upgrades across every school building in the district. This includes new classrooms and laboratories, library media center expansions, secure entry vestibules, roof replacements, and electrical system upgrades. The work is rolling out in phases beginning with additions at LaGrange Middle and West Road Intermediate Schools. Simultaneously, the district has studied a consolidation model that would reshape how grades are distributed across buildings, meaning families should anticipate changes in school configurations and student assignments as the capital project and any structural reorganization unfold.

The school occupies a typical suburban high school campus on Route 55 in Freedom Plains. Civic anchors in the surrounding area include Freedom Park with its swimming lake and trails, the William R. Steinhaus Dutchess Rail Trail, a multi-county library system branch, and county public transit service that connects the area to Poughkeepsie. The built environment remains oriented to automobile travel, though town planning and recent infrastructure additions on Route 55 aim to improve walkability over time.

Program and staffing data for the school, along with graduation rates, were not available in the provided information, so readers interested in course breadth, career and technical pathways, college-readiness metrics, or teaching staff details should consult the school directly or the district website.

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Academic performance

State test results and graduation outcomes.

Graduation rate (ACGR)

95.0%Cohort of 703 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

21 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

21 tested

76.2%

scored 3 or higher

Calculus BC

37 tested · Grade 10

89.2%

scored 3 or higher

Statistics

15 tested

86.7%

scored 3 or higher

Sciences

Biology

29 tested · Grade 10

55.2%

scored 3 or higher

Chemistry

18 tested

55.6%

scored 3 or higher

Environmental Science

13 tested

30.8%

scored 3 or higher

Physics C: Mechanics

21 tested

85.7%

scored 3 or higher

History and Social Sciences

Comparative Government and Politics

14 tested

85.7%

scored 3 or higher

Macroeconomics

15 tested

80.0%

scored 3 or higher

Microeconomics

17 tested

94.1%

scored 3 or higher

Psychology

74 tested

79.7%

scored 3 or higher

U.S. History

197 tested

82.2%

scored 3 or higher

World Languages and Cultures

French Language and Culture

10 tested

40.0%

scored 3 or higher

Spanish Language and Culture

19 tested · Grade 10

57.9%

scored 3 or higher

Arts

Art History

21 tested · Grade 10

57.1%

scored 3 or higher

Studio Art Drawing

10 tested

50.0%

scored 3 or higher

Other

Language and Comp

280 tested

49.3%

scored 3 or higher

Literature and Comp

119 tested

73.9%

scored 3 or higher

Studio Art 2d Design

4 tested

0.0%

scored 3 or higher

U S Government and Politics

12 tested

100.0%

scored 3 or higher

World History

84 tested · Grade 10

81.0%

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
Social Studies	615	84.0%
Ela	605	86.0%
Science	317	59.0%
Math	175	93.0%

Math

Grade 80%

School 0% · District 30% · ▼ 30 pts below district

▼ 37 pts below state median · ▼ 40 pts below county median

English language arts

Grade 80%

School 0% · District 41% · ▼ 40 pts below district

▼ 48 pts below state median · ▼ 46 pts below county median

Science

Grade 80%

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

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

This schoolARLINGTON 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.