PLAINEDGE SENIOR HIGH SCHOOL

Set in MASSAPEQUA, New York, PLAINEDGE SENIOR HIGH SCHOOL is a reasonably sized four-year high school, operated by PLAINEDGE UNION FREE SCHOOL DISTRICT. It teaches 856 students across grades 9 through 12. Compared to the state average of about 668 students per school, that is 28% bigger than typical.

PLAINEDGE SENIOR HIGH SCHOOL is one of 5 schools operated by PLAINEDGE UNION FREE SCHOOL DISTRICT, a district that enrolls 2,959 students overall.

On demographics, PLAINEDGE SENIOR HIGH SCHOOL records that the student body is overwhelmingly White (80%). The remainder breaks down as 10% Hispanic, 7% Asian. That is considerably more White than the county at large, where the share is closer to 57%.

Looking at school resources, On paper, PLAINEDGE SENIOR HIGH SCHOOL has 71 full-time-equivalent teachers, translating to a class-load average of around 12.1:1. Statewide, the average ratio sits near 11.0:1, putting PLAINEDGE SENIOR HIGH SCHOOL higher than the state norm the norm. An estimated 16% of students are eligible for free or reduced-price lunch, a commonly cited indicator of low-income enrollment. Set against Nassau County (around 31%), the school's rate is south of typical.

Adjusting for the school's free-and-reduced-lunch share, PLAINEDGE SENIOR HIGH SCHOOL performs roughly as the BeatsExpectations model predicts for a school with this FRL share. The predicted value is around 68.9%, the actual is 84.3%, a residual of +15.4 points.

Across the wider county, ACS estimates for Nassau County put the typical household earns roughly $146,202 per year, roughly 50% of adults have completed at least a four-year degree, and census figures put the poverty rate at about 4%. In all, Nassau County runs 315 public schools (combined enrollment of about 200,775 students), of which PLAINEDGE SENIOR HIGH SCHOOL is one.

The closest other public school is CHARLES E SCHWARTING SCHOOL, roughly 0.5 miles away. Counting just inside five miles, 8 other public schools cluster around PLAINEDGE SENIOR HIGH SCHOOL. Ranking that nearby cluster on reported proficiency puts PLAINEDGE SENIOR HIGH SCHOOL at 2nd of 9; the average score across the group is 69.2%.

The campus sits in a suburban setting.

Looking at the recent track record. Over the past 7-year window, the student count declined 13%: 982 students in 2018 compared to 856 in 2025. Over the same period, the White share decreased from 91% to 80%.

Within the allk12 community for this school, the feed for PLAINEDGE SENIOR HIGH SCHOOL typically covers sports schedules, lunch menu changes, and school spirit week. Anyone with firsthand experience at this school can post or comment.