Enrollment
293
Illinois · 2024-25 NCES data
Elementary school (grades K-5) · Oak Brook, IL
Brook Forest Elem School
Federal NCES profile for Brook Forest Elem School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 56/100.
2024-25 NCES dataElementary school (grades K-5)NCES 170798000405
👥 S:T ratio 60
🌟 Gifted program 30
📋 Attendance 80
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Brook Forest Elem School earns 56/100 on the Resource Investment Index, with class sizes smaller than 90% of Illinois schools. It is also more racially and ethnically mixed than most Illinois schools.
- #2 of 3
- public schools in Oak Brook · Resource Index
- 56
- Resource Index · Higher
- 10.1:1
- small classes for Illinois
- 293
- students enrolled
Brook Forest Elem School has class sizes smaller than 90% of Illinois schools. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Brook Forest Elem School ranks #2 of 3 public schools in Oak Brook, IL.
School address
District: Butler Sd 53 · Illinois
NCES ID 170798000405 Verify on NCES CCD record →
Teachers (FTE)
29.0
Federal CCD staff survey
Students per teacher
10.1:1
vs 14:1 Illinois avg
-28% vs state
Student-teacher ratio in context
How Brook Forest Elem School compares with Illinois and U.S. medians
What stands out at Brook Forest Elem School
Brook Forest Elem School is a mid-sized elementary school in Oak Brook, Illinois, enrolling 293 students.
Classes run notably small here: at 10.1:1, Brook Forest Elem School is leaner than roughly 90% of Illinois schools and 28% under the state's 14:1 norm, more adult attention per pupil than most peers.
With 293 students, its enrollment sits close to the Illinois median campus size.
Its Resource Investment Index lands in the upper third of 3,845 scored Illinois schools.
Its student body is led by Asian (50%) and White (29%), more mixed than most schools in the state (diversity index 65/100).
Attendance holds up well here: only 8.2% of students were chronically absent, below the typical post-pandemic national figure.
The surrounding Butler Sd 53 spends $31,573 per pupil, 85% above the Illinois average, a better-resourced district than most.
Butler Sd 53 also operates Butler Junior High School (163 students) and Oak Brook Park District (7 students) alongside Brook Forest 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 Brook Forest Elem School compares
Brook Forest 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 | 10.1:1 | ▼ 28% | 14:1 | 15.7:1 |
| Enrollment | 293 | top 65% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
10.1:1
Leaner classes than 88% of US schools, among the more generously staffed nationally.
293
Bigger than 31% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Staffing depth
10.1:1
students per teacher
- 28% below state mean
Top 10% in Illinois - lower ratio than 90% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
8.2%
chronically absent (missed 10%+ of school days)
In the 5-10% range, close to the pre-pandemic national baseline.
Funding equity
$31,573
per pupil, district-wide
- above Illinois avg of $17,042
Well above the U.S. public-school average, reflecting substantially higher local or state investment per enrolled student.
Support staff
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
0
in-school suspensions + 0 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 0.0 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
Asian 49.5%
White 29.4%
Two or More 12.3%
Hispanic or Latino 6.8%
African American 2.0%
Largest group: Asian at 49.5% of enrollment.
Student-body diversity index 64.8/100
Simpson diversity index - at 64.8, Brook Forest Elem School is more mixed than the Illinois school average of 38.9.
Programs
Funding & spending
District-wide per-pupil expenditure for Butler Sd 53, which includes Brook Forest Elem School.
$31,573
Per student
+85%
vs Illinois
Avg $17,042
+90%
vs U.S.
Avg $16,593
Revenue mix
Local 78.2%
State 19.6%
Federal 2.2%
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 Brook Forest Elem School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Butler Junior High School | Smaller | No free-lunch data | Lower S:T ratio |
| Oak Brook Park District | Smaller | No free-lunch data | No ratio data |
Comparisons are relative to Brook Forest Elem School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 163
- Students per teacher
- 6.3:1
- Resource Index
- 60/100
- Enrollment
- 7
- Students per teacher
- -
- Resource Index
- 30/100
Similar elementary 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 (~293 students)
Next steps
Verify locally before acting on Brook Forest Elem School's federal record.
- Compare Brook Forest Elem School against another school. Compare schools
- Butler Sd 53'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 Brook Forest Elem School
How many students attend Brook Forest Elem School?
Brook Forest Elem School has 293 students enrolled. It is an elementary school in Oak Brook, IL.
What is the student-teacher ratio at Brook Forest Elem School?
The student-teacher ratio at Brook Forest Elem School is 10.1:1, which is 28% lower than the Illinois average of 14:1 and 36% 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 Brook Forest Elem School?
The largest demographic group at Brook Forest Elem School is Asian at 49.5% of enrollment, in Oak Brook, IL. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 64.8/100.
What is the Resource Investment Index for Brook Forest Elem School?
Brook Forest Elem School has a Resource Investment Index of 56/100 (higher 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 Brook Forest Elem School rank among public schools in Oak Brook?
By Resource Investment Index, Brook Forest Elem School ranks #2 of 3 public schools in Oak Brook, IL. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in Oak Brook on the city page.
Is Brook Forest Elem School a good school?
Brook Forest Elem School earns 56/100 on the Resource Investment Index, with class sizes smaller than 90% 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 Butler Sd 53?
Besides Brook Forest Elem School, Butler Sd 53 also operates Butler Junior High School (163 students) and Oak Brook Park District (7 students). See the Butler Sd 53 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.