Enrollment
7
Illinois · 2024-25 NCES data
Other / mixed grade configuration · Oak Brook, IL
Federal NCES profile for Oak Brook Park District, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 30/100.
The verdict
Oak Brook Park District earns 30/100 on the Resource Investment Index on federal resource data. It is also one of the smallest schools in Illinois.
By Resource Investment Index, Oak Brook Park District ranks #3 of 3 public schools in Oak Brook, IL.
NCES ID 170798006228 Verify on NCES CCD record →
Enrollment
7
Illinois · 2024-25 NCES data
Oak Brook Park District is a small combined-grade school in Oak Brook, Illinois, enrolling 7 students.
This is a small campus: fewer students than 99% of Illinois schools, with 7 enrolled.
Its Resource Investment Index lands in the lower third of 3,845 scored Illinois schools.
Its student body is led by Asian (71%) and White (29%) (diversity index 41/100).
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 Brook Forest Elem School (293 students) and Butler Junior High School (163 students) alongside Oak Brook Park District.
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
Oak Brook Park District on the metrics families compare, against Illinois and U.S. means.
| Metric | This school | vs Illinois | Illinois avg | U.S. avg |
|---|---|---|---|---|
| Enrollment | 7 | top 100% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
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.
Largest group: Asian at 71.4% of enrollment.
Simpson diversity index - at 40.8, Oak Brook Park District is about as mixed as the Illinois school average of 38.9.
District-wide per-pupil expenditure for Butler Sd 53, which includes Oak Brook Park District.
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.
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Brook Forest Elem School | Larger | No free-lunch data | No ratio data |
| Butler Junior High School | Larger | No free-lunch data | No ratio data |
Comparisons are relative to Oak Brook Park District's own figures; each column derives from NCES Common Core of Data.
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.
Next steps
Verify locally before acting on Oak Brook Park District's federal record.
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.
Oak Brook Park District has 7 students enrolled. It is a public school in Oak Brook, IL.
The largest demographic group at Oak Brook Park District is Asian at 71.4% of enrollment, in Oak Brook, IL.
Oak Brook Park District has a Resource Investment Index of 30/100 (lower reported resources relative to schools nationally) based on 1 factor: student-teacher ratio. Not a test-score or academic measure (national median ~41/100, see methodology). Limited indicators were available, so the index reflects partial data.
By Resource Investment Index, Oak Brook Park District ranks #3 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.
Oak Brook Park District earns 30/100 on the Resource Investment Index on federal resource data. It is also one of the smallest schools in Illinois. 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.
Besides Oak Brook Park District, Butler Sd 53 also operates Brook Forest Elem School (293 students) and Butler Junior High School (163 students). See the Butler Sd 53 district page for the complete list.
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.