THOMAS J LAHEY ELEMENTARY SCHOOL

Set in GREENLAWN, New York, THOMAS J LAHEY ELEMENTARY SCHOOL is a middle-of-the-pack elementary school, part of HARBORFIELDS CENTRAL SCHOOL DISTRICT. It enrolls 602 students across grades 3 through 5. Enrollment runs roughly 36% bigger than the state mean of about 443.

Within HARBORFIELDS CENTRAL SCHOOL DISTRICT, which oversees 4 schools and 2,773 students, THOMAS J LAHEY ELEMENTARY SCHOOL is one campus in the system.

On demographics, THOMAS J LAHEY ELEMENTARY SCHOOL logs that the largest single group is White, at 68% of enrollment. Beyond that, the school logs 19% Hispanic, 6% multiracial, 5% Asian, 2% Black. That mix tracks the wider county fairly closely.

On the income-and-resources front, THOMAS J LAHEY ELEMENTARY SCHOOL reports 56 full-time-equivalent teachers, putting the student-to-teacher ratio at about 10.8:1. That figure is tighter than the state norm's 12.8:1 average. Roughly 17% of students at THOMAS J LAHEY ELEMENTARY SCHOOL qualify for free or reduced-price lunch, a number frequently used as a low-income enrollment indicator. That share is below Suffolk County's rate of about 39%.

On a residual basis (actual vs predicted given the student mix), THOMAS J LAHEY ELEMENTARY SCHOOL sits in the middle band of the BeatsExpectations distribution. Schools with this campus's student mix typically land near 68.8%; this one delivers 66.2%.

In the surrounding community, census data for Suffolk County shows median household earnings sit near $130,686, about 40% of the adult population holds a bachelor's degree or above, and the poverty rate sits near 4%. In all, Suffolk County runs 343 public schools (combined enrollment of about 222,439 students), of which THOMAS J LAHEY ELEMENTARY SCHOOL is one.

Nearest neighbor: HARBORFIELDS HIGH SCHOOL, around 0.2 miles off. Within five miles, there are 8 other public schools. Among the 8 schools in that immediate cluster with test data (this one included), THOMAS J LAHEY ELEMENTARY SCHOOL ranks 6th on composite proficiency, beneath the local average of 74.0%.

THOMAS J LAHEY ELEMENTARY SCHOOL operates from a bedroom-community location.

Trend over the last 7 years. THOMAS J LAHEY ELEMENTARY SCHOOL's enrollment has fell 17% since 2018, when it stood at 722 (now 602). Over the same period, the Hispanic share expanded from 15% to 19%. Class-load math has narrowed: from 11.9:1 in 2018 to 10.8:1 in 2025.

Within the allk12 community for this school, posts here usually surface around fundraisers, lost-and-found posts, and report-card season. Contributors range from current parents to recent graduates and teachers.