Enrollment
466
Illinois · 2024-25 NCES data
Other / mixed grade configuration · Hanover Park, IL
Greenbrook Elem School
Federal NCES profile for Greenbrook Elem School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 43/100.
2024-25 NCES dataOther / mixed grade configurationNCES 172088004682
👥 S:T ratio 56
🌟 Gifted program 70
📋 Attendance 4
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Greenbrook Elem School earns 43/100 on the Resource Investment Index, with class sizes smaller than 81% of Illinois schools. It is also more racially and ethnically mixed than most Illinois schools.
- #1 of 5
- schools in Hanover Park · Resource Index
- 43
- Resource Index · Typical
- 11.1:1
- small classes for Illinois
- 466
- students enrolled
Greenbrook Elem School has class sizes smaller than 81% of Illinois schools. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Greenbrook Elem School ranks #1 of 5 schools in Hanover Park, IL.
School address
District: Keeneyville Sd 20 · Illinois
NCES ID 172088004682 Verify on NCES CCD record →
Teachers (FTE)
42.0
Federal CCD staff survey
Students per teacher
11.1:1
vs 14:1 Illinois avg
-21% vs state
Student-teacher ratio in context
How Greenbrook Elem School compares with Illinois and U.S. medians
What stands out at Greenbrook Elem School
Greenbrook Elem School is a mid-sized combined-grade school in Hanover Park, Illinois, enrolling 466 students.
Class sizes run a bit leaner than typical: 11.1:1 puts it in the smaller third of Illinois schools by student-teacher ratio.
Enrollment of 466 puts it in the larger third of Illinois schools by headcount.
Its Resource Investment Index sits near the middle of the pack among 3,845 scored Illinois schools.
Its student body is led by Hispanic or Latino (54%) and African American (18%), more mixed than most schools in the state (diversity index 65/100).
Chronic absenteeism is elevated: 38.2% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Among Hanover Park's public schools, it stands alongside Horizon Elem School (436 students): Greenbrook Elem School is larger than that campus by headcount and runs leaner classes (11.1:1 vs 14.5:1).
Keeneyville Sd 20 also operates Spring Wood Middle School (420 students) and Waterbury Elem School (415 students) alongside Greenbrook Elem School.
Sourced from NCES CCD, CRDC, and F-33 (federal records, not a quality verdict). How we source and compute this.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Greenbrook Elem School compares
Greenbrook Elem School on the metrics families compare, against Illinois and U.S. means.
| Metric | This school | vs Illinois | Illinois avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 11.1:1 | ▼ 21% | 14:1 | 15.7:1 |
| Enrollment | 466 | top 35% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
11.1:1
Leaner classes than 82% of US schools, among the more generously staffed nationally.
466
Bigger than 57% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Staffing depth
11.1:1
students per teacher
- 21% below state mean
Top 19% in Illinois - lower ratio than 81% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
38.2%
chronically absent (missed 10%+ of school days)
At or above 20%, the commonly used threshold for "high" chronic absenteeism, signaling significant barriers to regular attendance.
Funding equity
$16,904
per pupil, district-wide
- below Illinois avg of $17,042
Close to the U.S. public-school average per-pupil spend.
Support staff
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
33
in-school suspensions + 11 out-of-school
Suspension rate: 7.1 per 100 students. Combined in-school and out-of-school rate: 9.4 per 100 students. Reported via the Civil Rights Data Collection.
Overview
- Common Core of Data (June 2026): enrollment, staffing, and the student-teacher ratio above.
- Civil Rights Data Collection: discipline counts and program access (AP, gifted, special education).
- F-33 School District Finance Survey: the district-wide per-pupil spending figures below.
Three separate federal collections, each on its own reporting cadence - which is why this school's numbers line up on a consistent basis against every other school and state on this site, rather than mixing figures pulled from different survey years.
Student demographics
Hispanic or Latino 53.6%
African American 18.0%
White 13.9%
Asian 8.2%
Two or More 5.6%
American Indian / Alaska Native 0.6%
Largest group: Hispanic or Latino at 53.6% of enrollment.
Student-body diversity index 65.1/100
Simpson diversity index - at 65.1, Greenbrook Elem School is more mixed than the Illinois school average of 38.9.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Keeneyville Sd 20, which includes Greenbrook Elem School.
$16,904
Per student
-1%
vs Illinois
Avg $17,042
+2%
vs U.S.
Avg $16,593
Revenue mix
Local 61.9%
State 30.3%
Federal 7.8%
Source: NCES F-33 School District Finance Survey District-level finance · FY 2021-22 Per-pupil expenditure reflects the district-wide average. Individual school budgets are not reported at the federal level.
How Greenbrook Elem School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Spring Wood Middle School | Similar size | No free-lunch data | Similar S:T ratio |
| Waterbury Elem School | Similar size | No free-lunch data | Similar S:T ratio |
Comparisons are relative to Greenbrook Elem School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 420
- Students per teacher
- 11.1:1
- Resource Index
- 45/100
- Enrollment
- 415
- Students per teacher
- 11.9:1
- Resource Index
- 53/100
Similar other schools in Hanover Park
4 comparable other schools (grades Mixed) serving the same city.
Horizon Elem School
Standard public school
436 students 14.5:1 students per teacher
Ontarioville Elem School
Standard public school
430 students 17.2:1 students per teacher
Laurel Hill Elem School
Standard public school
384 students 15.4:1 students per teacher
Parkwood Elem School
Standard public school
342 students 18:1 students per teacher
Similar other schools statewide
Matched by enrollment size and by staffing ratio across all of Illinois, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~466 students)
Similar student-teacher ratio (~11.1:1)
Next steps
Verify locally before acting on Greenbrook Elem School's federal record.
- Compare Greenbrook Elem School against another school. Compare schools
- Keeneyville Sd 20's spending and staffing shape this school. District profile
- Confirm current enrollment and boundaries with the school. Choosing guide
Federal record (CCD 2024-25, CRDC 2021-22) - PlainSchools assigns no subjective rating; the composite quality score is a transparent, reproducible index computed from this cited federal data.
Frequently asked questions about Greenbrook Elem School
How many students attend Greenbrook Elem School?
Greenbrook Elem School has 466 students enrolled. It is a public school in Hanover Park, IL.
What is the student-teacher ratio at Greenbrook Elem School?
The student-teacher ratio at Greenbrook Elem School is 11.1:1, which is 21% lower than the Illinois average of 14:1 and 29% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What is the racial and ethnic makeup of Greenbrook Elem School?
The largest demographic group at Greenbrook Elem School is Hispanic or Latino at 53.6% of enrollment, in Hanover Park, IL. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 65.1/100.
What is the Resource Investment Index for Greenbrook Elem School?
Greenbrook Elem School has a Resource Investment Index of 43/100 (typical reported resources relative to schools nationally) based on 3 factors: student-teacher ratio, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Greenbrook Elem School rank among schools in Hanover Park?
By Resource Investment Index, Greenbrook Elem School ranks #1 of 5 schools in Hanover Park, IL. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all schools in Hanover Park on the city page.
Is Greenbrook Elem School a good school?
Greenbrook Elem School earns 43/100 on the Resource Investment Index, with class sizes smaller than 81% of Illinois schools. It is also more racially and ethnically mixed than most Illinois schools. This is a resource snapshot, not an academic rating; see the Resource Investment Index question above for what the number does and doesn't measure.
What other schools are in Keeneyville Sd 20?
Besides Greenbrook Elem School, Keeneyville Sd 20 also operates Spring Wood Middle School (420 students) and Waterbury Elem School (415 students). See the Keeneyville Sd 20 district page for the complete list.
Related tools
Every figure on PlainSchools is rendered directly from the source NCES, CRDC and F-33 federal records, no number is typed in by an editor. Each school's figures reflect its most recent NCES/CRDC submission on file. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.