ARLINGTON HIGH SCHOOL

ARLINGTON HIGH SCHOOL is a secondary school of roomy scale in LAGRANGEVILLE, New York, operated by ARLINGTON CENTRAL SCHOOL DISTRICT, teacheing 2,472 students in grades 9 through 12. That puts it 270% above the typical public school in New York, which averages around 668 students.

ARLINGTON CENTRAL SCHOOL DISTRICT comprises 11 schools with combined enrollment of 7,644 students; ARLINGTON HIGH SCHOOL is among them.

On demographics, ARLINGTON HIGH SCHOOL records that White students make up the majority at 57%. The remainder is composed of 24% Hispanic, 10% Black, 5% multiracial, 3% Asian. That is considerably less White than the county at large, where the share is closer to 69%.

On the income-and-resources front, The school currently runs with 172 full-time-equivalent teachers, for a student-teacher ratio near 14.4:1. Statewide, the average ratio sits near 11.0:1, putting ARLINGTON HIGH SCHOOL higher than the state norm the norm. Roughly 31% of students at ARLINGTON HIGH SCHOOL qualify for free or reduced-price lunch, which schools and policymakers use as a rough income-mix signal. By comparison, Dutchess County runs at roughly 40%, so the school's eligibility rate is lower than the surrounding baseline.

After controlling for student poverty, ARLINGTON HIGH SCHOOL tracks the demographic baseline. The model predicts 63.5% given the school's FRL share; actual proficiency is 71.2%.

Across the wider county, the surrounding county (Dutchess County) logs that the typical household earns roughly $99,478 per year, 42% of adults hold a bachelor's degree or higher, and the poverty rate sits near 5%. Across Dutchess County's 76 public schools (combined enrollment of about 36,885 students), ARLINGTON HIGH SCHOOL is one campus in the mix.

LAGRANGE MIDDLE SCHOOL is the nearest neighboring public school, about 1.0 miles from this campus. Counting just inside five miles, 8 other public schools cluster around ARLINGTON HIGH SCHOOL. Among the 7 schools in that immediate cluster with test data (this one included), ARLINGTON HIGH SCHOOL ranks 1st on composite proficiency, higher than the local average of 52.0%.

The school occupies a commuter-belt site.

Five-year trend. Looking back 7 years, enrollment at ARLINGTON HIGH SCHOOL has declined 17%, going from 2,965 students in 2018 to 2,472 in 2025. Over the same period, the White share decreased from 74% to 57%. The student-to-teacher ratio pulled in from 15.9:1 in 2018 to 14.4:1 today.

In the discussion threads here, members of the ARLINGTON HIGH SCHOOL community share and discuss open house dates, ride-share offers, and field-trip permission slips. Anyone with firsthand experience at this school can post or comment.