Greenbrier Elem School

Set in Arlington Heights, Illinois, Greenbrier Elem School is a low-enrollment primary school, one of the schools within Arlington Heights SD 25. It hosts 280 students across grades pre-K through 5. By comparison, Illinois's public schools average about 381 students each, so Greenbrier Elem School sits 27% leaner than that benchmark.

Arlington Heights SD 25 runs 9 schools in total, collectively educating 5,423 students. Greenbrier Elem School is one of those campuses.

Looking at the student body, Greenbrier Elem School reports that 65% of the student body identifies as White; the rest consists of 26% Asian, 6% Hispanic. That is visibly more White than the county at large, where the share is closer to 44%.

Looking at school resources, On paper, Greenbrier Elem School has 32 full-time-equivalent teachers, translating to a class-load average of around 8.9:1. That figure is tighter than the state norm's 13.9:1 average. Roughly 24% of students at Greenbrier Elem School qualify for free or reduced-price lunch, often used as a Title I proxy. That share is noticeably below Cook County's rate of about 66%.

On a demographically-adjusted basis, Greenbrier Elem School sits in the top 10% of Illinois schools after the BeatsExpectations adjustment. Predicted proficiency for the school's FRL share is roughly 57.9%; actual is 72.6%, +14.7 points clear of the demographic baseline.

Across the wider county, census data for Cook County shows median household income runs about $83,498, roughly 43% of adults have completed at least a four-year degree, and roughly 10% of residents live below the federal poverty line. In all, Cook County runs 1406 public schools (combined enrollment of about 697,934 students), of which Greenbrier Elem School is one.

Lake Louise Elem School is the nearest neighboring public school, about 0.5 miles from this campus. 8 of the 8 nearest public schools sit inside a five-mile radius. On composite proficiency, Greenbrier Elem School comes 2nd of 8 in the immediate cluster, ahead of the nearby-schools average of 44.8%.

The campus sits in a suburban setting.

Five-year trend. Over the past 7-year window, the student count decreased 29%: 394 students in 2018 compared to 280 in 2025. Over the same period, the White share declined from 69% to 65%. The student-to-teacher ratio fell from 15.1:1 in 2018 to 8.9:1 today.

On the community side, posts here usually surface around school events, parent volunteer needs, and clubs. Parents, students, alumni, and staff are welcome to weigh in.