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SCHOOL COMMUNITY·ARLINGTON CENTRAL SCHOOL DISTRICT·NCES 360327000088

ARLINGTON HIGH SCHOOL

1157 RT 55, LAGRANGEVILLE, NY 12540 · (845) 486-4860 · Dutchess County
GRADES 09–12HIGH21-SUBURBREGULAR SCHOOL2,472 STUDENTS
B+
allk12 Grade
Scored higher than 67% of New York public high schools
  • B+Test scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
  • BBeats expectations How far test scores land above or below what the share of low-income students predicts for a school in this state.
  • ·Three-year trend Not available for this school, so the grade uses the other parts.

Grades compare a school only with schools in the same state, because every state gives its own test. How grades work · Top-graded New York public high schools

Enrollment
2,472
High
DISTRICT 695 · STATE 668
Student : Teacher
14.4:1
172 FTE teachers
DISTRICT 11.4:1 · STATE 11.0:1
Free / Reduced Lunch
31%
770 students
DISTRICT 30% · STATE 58%
Community
1
0 members
Enrollment and student:teacher ratio compared against other high schools. Free/Reduced Lunch and demographics compared against all schools.

Enrollment by grade, 2024-25

GradeStudentsShare
Grade 964226%
Grade 1061725%
Grade 1155122%
Grade 1263626%
Ungraded261%
Student demographics
60%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 59% · STATE 72% · US 70%
White
1,40957%
DISTRICT 58% · STATE 39% · US 43%
Hispanic
59024%
DISTRICT 24% · STATE 31% · US 30%
Black
25610%
DISTRICT 9% · STATE 16% · US 15%
Asian
833%
DISTRICT 3% · STATE 10% · US 6%
Two+
1275%
DISTRICT 5% · STATE 4% · US 5%
Native American
20%
DISTRICT 0% · STATE 1% · US 1%
Pacific Islander
30%
DISTRICT 0% · STATE 0% · US 0%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Male
1,25251%
Female
1,21849%

School pathway

Feeds from
LAGRANGE MIDDLE SCHOOL06–08UNION VALE MIDDLE SCHOOL06–08
Based on grade levels within ARLINGTON CENTRAL SCHOOL DISTRICT. Attendance zones can vary; confirm enrollment with the district.

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Test scores

NYS Assessments 2024-25 . % Proficient (Level 3 + Level 4)
English Language Arts
86.0%
NY avg 58.3% . -6.0pp since 2023
Math
60.0%
NY avg 57.4% . -10.0pp since 2023

What this means: On the NYS Assessments, New York's statewide test, about 86 of every 100 students at this school read and write at grade level and about 60 of 100 do math at grade level. Across all New York schools, those numbers are about 58 and 57. Reading and writing scores are down about 6 points since 2023, while math scores are down about 10 points.

NYS Assessments results by year

School yearEnglish Language ArtsMath
2024-2586.0%60.0%
2023-2492.0%70.0%
% Proficient (Level 3 + Level 4), all students and all tested grades.
Source: NYS Assessments. All students, all grades. See all years and grades →

BeatsExpectations

Demographically-adjusted score · methodology
Tier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
71.2%
composite math + reading, all grades
Predicted
63.5%
based on NY schools with similar FRL share
Beats by
+7.6pp
above demographic expectation

What this means: About 71% of students here test proficient in math and reading, compared with the roughly 64% typical for New York schools with a similar share of low-income students. BeatsExpectations measures results against demographically similar schools rather than by raw scores, and this school falls within the typical range, neither among New York's top nor bottom 10%.

BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →

Schools most like ARLINGTON HIGH SCHOOL

ARLINGTON HIGH SCHOOL's state test result (71.2% proficient) is higher than 2 of the 5 schools below with a result.

SchoolStudentsLow-incomeProficient
ARLINGTON HIGH SCHOOL this school2,47231.1%71.2%
SACHEM HIGH SCHOOL NORTH
LAKE RONKONKOMA
2,00833.8%76.8%
SACHEM HIGH SCHOOL EAST
FARMINGVILLE
1,98434.1%82.2%
FARMINGDALE SENIOR HIGH SCHOOL
FARMINGDALE
1,70426.9%63.7%
LONGWOOD HIGH SCHOOL
MIDDLE ISLAND
2,99335.7%66.0%
JOHN JAY SENIOR HIGH SCHOOL
HOPEWELL JUNCTION
1,76823.2%71.3%
Matched among New York high schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.

Where ARLINGTON HIGH SCHOOL ranks

Among high schools
MeasureThis schoolIn New YorkIn Dutchess County
State test proficiency
ranked highest first
71.2%#324 of 1,135#6 of 14
Math proficiency
ranked highest first
60.0%#421 of 1,109
▼ 58
#7 of 14
▲ 1
Reading proficiency
ranked highest first
86.0%#287 of 1,135
▼ 88
#9 of 14
▼ 4
Enrollment
ranked largest first
2,472#31 of 1,216#1 of 15
Students per teacher
ranked fewest first
14.4:1#955 of 1,058#13 of 13
Diversity index
ranked most diverse first
60.3%#248 of 1,070#5 of 13
Free and reduced lunch
ranked highest share first
31.1%#977 of 1,167#8 of 14
Enrollment change since 2017-18
ranked steepest decline first
-16.6%#242 of 743#3 of 11
Ranked against other public high schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.

4-year change

SY 2020-21 vs SY 2024-25
Enrollment
2,472
-229 (-8%) vs 2020
+14% since 1990-91, when it was 2,161
Student : Teacher
14.4:1
was 14.0:1
Source: NCES Common Core of Data

Enrollment and staffing by year

School yearStudentsTeachers (FTE)Students per teacherFree and reduced lunch
2024-252,472171.914.4:131% (770)
2023-242,47218213.6:129% (706)
2022-232,547185.313.7:126% (656)
2020-212,70119314.0:126% (694)
2017-182,965186.815.9:122% (664)
2015-163,10618217.1:122% (674)
2010-113,39719217.7:19% (320)
2000-012,74216017.1:13% (76)
1990-912,16114115.3:1N/A
Source: NCES Common Core of Data. Rows are the federal collections on file for ARLINGTON HIGH SCHOOL.

About ARLINGTON HIGH SCHOOL

ARLINGTON HIGH SCHOOL is a large high school based in LAGRANGEVILLE, New York. Students in grades 9 through 12 make up the school's enrollment of 2,472 students. High schools in New York average about 668 students, which makes this school 270% bigger than average.

ARLINGTON HIGH SCHOOL is one school in an 11-school district, ARLINGTON CENTRAL SCHOOL DISTRICT, which enrolls 7,644 students.

Federal enrollment data show ARLINGTON HIGH SCHOOL is 57% White. The remaining shares are 24% Hispanic, 10% Black, 5% multiracial, and 3% Asian. Dutchess County as a whole is about 69% White, so the school's share is lower. A diversity index of 60% means there is a 60% chance two randomly chosen students at ARLINGTON HIGH SCHOOL are from different groups.

The school's 171.9 full-time-equivalent teachers translate to a student-to-teacher ratio of 14.4:1. Statewide, high schools in New York average 11.0:1. Income data for the school show 31% of students eligible for free or reduced-price lunch. It compares with 40% for public schools in Dutchess County.

ARLINGTON HIGH SCHOOL earns a B+ on the allk12 Grade, which blends test scores, results against poverty-based expectations, and the three-year trend. It scored higher than 67% of New York public high schools.

The school's average proficiency rate across its state test results is 71.2%. For its free or reduced-price lunch share, the predicted value is 63.5%.

In the wider Dutchess County area, median household income comes to about $99,478, roughly 42% of adults have a four-year degree or more, and about 5% of residents live below the federal poverty line. Dutchess County's 76 public schools enroll about 36,885 students and include ARLINGTON HIGH SCHOOL.

A public school about 1.0 miles away, LAGRANGE MIDDLE SCHOOL, is the closest to ARLINGTON HIGH SCHOOL. Inside a five-mile radius, there are at least 8 other public schools. Among 7 nearby schools that report test results, ARLINGTON HIGH SCHOOL ranks 1st on proficiency.

NCES describes the area around ARLINGTON HIGH SCHOOL as Suburb: Large, meaning in a suburban area outside a principal city, within an urbanized area with a population of 250,000 or more.

An 8% drop took enrollment from 2,701 in 2020-21 to 2,472 in 2024-25.

You can use this page to share news and ask questions about fundraisers, report cards, and school supplies. You can also rate the school on this page.

Dutchess County at a glance

View full county profile
Population
298,220
Census ACS
Median income
$99,478
Household, ACS
Bachelor's+
42%
Adults 25+
Poverty rate
5%
Below federal line
Schools in county
76
36,885 students

Quick facts

School name
ARLINGTON HIGH SCHOOL
District
ARLINGTON CENTRAL SCHOOL DISTRICT
Address
1157 RT 55, LAGRANGEVILLE, NY 12540
Phone
(845) 486-4860
County
Dutchess County
Level
High
Grade range
09–12
Total enrollment
2,472
Teachers (FTE)
172
Student–teacher ratio
14.4:1
Free and reduced lunch
770 (31%)
Locale
21-Suburb: Large
NCES ID
360327000088
Charter school
No
Virtual school
No

Related schools

Other schools in ARLINGTON CENTRAL SCHOOL DISTRICT
Other schools in LAGRANGEVILLE
Other Arlington High schools

7 other US public schools in 8 states are named Arlington High. ARLINGTON HIGH SCHOOL is the 2nd largest of the 8.

Nearby schools

Frequently asked questions

About ARLINGTON HIGH SCHOOL
How many students attend ARLINGTON HIGH SCHOOL?
ARLINGTON HIGH SCHOOL enrolls approximately 2,472 students in grades 09-12.
Is ARLINGTON HIGH SCHOOL an elementary, middle, or high school?
ARLINGTON HIGH SCHOOL is a high school covering grades 09-12.
How many teachers does ARLINGTON HIGH SCHOOL have?
ARLINGTON HIGH SCHOOL employs 172 FTE teachers, for a student-to-teacher ratio of 14.4:1.
What is the student diversity at ARLINGTON HIGH SCHOOL?
Student demographics at ARLINGTON HIGH SCHOOL are roughly 57% White, 24% Hispanic, 10% Black, 3% Asian, 5% Two or more.
Is ARLINGTON HIGH SCHOOL public or private?
ARLINGTON HIGH SCHOOL is a public K-12 school, overseen by ARLINGTON CENTRAL SCHOOL DISTRICT.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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