Enrollment
163
Illinois · 2024-25 NCES data
Middle school (grades 6-8) · Oak Brook, IL
Federal NCES profile for Butler Junior High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 60/100.
The verdict
Butler Junior High School earns 60/100 on the Resource Investment Index, with class sizes smaller than 99% of Illinois schools. It is also more racially and ethnically mixed than most Illinois schools.
Butler Junior High School has class sizes smaller than 99% of Illinois schools. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Butler Junior High School ranks #1 of 3 public schools in Oak Brook, IL.
NCES ID 170798004936 Verify on NCES CCD record →
Enrollment
163
Illinois · 2024-25 NCES data
Teachers (FTE)
26.0
Federal CCD staff survey
Students per teacher
6.3:1
vs 14:1 Illinois avg
-55% vs state
How Butler Junior High School compares with Illinois and U.S. medians
Smaller classes than state median
6.3:1 - 7.7 below the Illinois state median of 14:1, indicating smaller average class loads than typical schools in the state.
Butler Junior High School is a small middle school in Oak Brook, Illinois, enrolling 163 students.
Classes run notably small here: at 6.3:1, Butler Junior High School is leaner than roughly 99% of Illinois schools and 55% under the state's 14:1 norm, more adult attention per pupil than most peers.
Enrollment of 163 puts it in the smaller third of Illinois schools by headcount.
Its Resource Investment Index outscores 94% of the 3,845 Illinois schools with a score on record, a top-tier result on this measure.
Its student body is led by Asian (49%) and White (34%), more mixed than most schools in the state (diversity index 63/100).
10.4% of students were chronically absent in the 2021-22 collection, in line with the post-pandemic national range.
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 Oak Brook Park District (7 students) alongside Butler Junior High 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
Butler Junior High 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 | 6.3:1 | ▼ 55% | 14:1 | 15.7:1 |
| Enrollment | 163 | top 88% | - | - |
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 49.1% of enrollment.
Simpson diversity index - at 63.3, Butler Junior High School is more mixed than the Illinois school average of 38.9.
District-wide per-pupil expenditure for Butler Sd 53, which includes Butler Junior High School.
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 | Higher S:T ratio |
| Oak Brook Park District | Smaller | No free-lunch data | No ratio data |
Comparisons are relative to Butler Junior High School'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 Butler Junior High School'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.
Butler Junior High School has 163 students enrolled. It is a middle school in Oak Brook, IL.
The student-teacher ratio at Butler Junior High School is 6.3:1, which is 55% lower than the Illinois average of 14:1 and 60% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
The largest demographic group at Butler Junior High School is Asian at 49.1% of enrollment, in Oak Brook, IL. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 63.3/100.
Butler Junior High School has a Resource Investment Index of 60/100 (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).
By Resource Investment Index, Butler Junior High School ranks #1 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.
Butler Junior High School earns 60/100 on the Resource Investment Index, with class sizes smaller than 99% 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.
Besides Butler Junior High School, Butler Sd 53 also operates Brook Forest Elem School (293 students) and Oak Brook Park District (7 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.
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PlainSchools, “Butler Junior High School, Oak Brook IL.” Compiled from NCES Common Core of Data, Civil Rights Data Collection, and the NCES F-33 finance survey; data as of June 2026. https://plainschools.com/schools/butler-junior-high-school-il/
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