Greenbrook Elem School

Greenbrook Elem School is a K-5 school of medium-sized scale in Hanover Park, Illinois, overseen by Keeneyville SD 20, instructing 466 students in grades pre-K through 5. Compared to the state average of about 381 students per school, that is 22% above typical.

Keeneyville SD 20 runs 3 schools in total, collectively educating 1,301 students. Greenbrook Elem School is one of those campuses.

On demographics, Greenbrook Elem School logs that the most-represented group is Hispanic (54%), with the rest of the student body spread across multiple groups. Beyond that, the school shows 18% Black, 14% White, 8% Asian, 6% multiracial. That is considerably more Hispanic than the county at large, where the share is closer to 16%.

On the resource side, On paper, Greenbrook Elem School has 46 full-time-equivalent teachers, translating to a class-load average of around 10.0:1. That figure is tighter than the state norm's 13.9:1 average. Roughly 74% of students at Greenbrook Elem School qualify for free or reduced-price lunch, which schools and policymakers use as a rough income-mix signal. That share is higher than DuPage County's rate of about 34%.

After controlling for student poverty, Greenbrook Elem School tracks the demographic baseline. The model predicts 28.5% given the school's FRL share; actual proficiency is 31.6%.

Across the wider county, DuPage County reports that median household earnings sit near $112,096, about 52% of the adult population holds a bachelor's degree or above, and roughly 5% of residents live below the federal poverty line. In all, DuPage County runs 277 public schools (combined enrollment of about 138,557 students), of which Greenbrook Elem School is one.

Nearest neighbor: Horizon Elem School, around 0.5 miles off. Within five miles, there are 8 other public schools. On composite proficiency, Greenbrook Elem School comes 7th of 8 in the immediate cluster, behind the nearby-schools average of 43.5%.

The campus sits in a residential setting.

Over the past 7-year window. Greenbrook Elem School's enrollment has decreased 20% since 2018, when it stood at 585 (now 466). The Hispanic share of enrollment ticked up from 39% to 54% over that span. Class-load math has tightened: from 14.1:1 in 2018 to 10.0:1 in 2025.

In the discussion threads here, members of the Greenbrook Elem School community share and discuss school events, parent volunteer needs, and clubs. Members of the school community can share what they know.