Enrollment
629
Illinois · 2024-25 NCES data
Other / mixed grade configuration · Lemont, IL
Federal NCES profile for Oakwood School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 42/100.
The verdict
Oakwood School earns 42/100 on the Resource Investment Index, with class sizes larger than 72% of Illinois schools.
Oakwood School has class sizes larger than 72% of Illinois schools. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Oakwood School ranks #3 of 5 public schools in Lemont, IL.
NCES ID 170729002507 Verify on NCES CCD record →
Enrollment
629
Illinois · 2024-25 NCES data
Teachers (FTE)
41.0
Federal CCD staff survey
Students per teacher
15.3:1
vs 14:1 Illinois avg
+9% vs state
How Oakwood School compares with Illinois and U.S. medians
Slightly above state median
15.3:1 - 1.3 above the Illinois state median of 14:1, indicating larger average class loads than typical schools in the state.
Oakwood School is a mid-sized combined-grade school in Lemont, Illinois, enrolling 629 students.
Class loads run somewhat heavier than typical: 15.3:1 puts it in the larger third of Illinois schools by student-teacher ratio.
Enrollment of 629 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 predominantly White (82% of enrollment) (diversity index 31/100).
17.2% of students were chronically absent in the 2021-22 collection, in line with the post-pandemic national range.
The surrounding Lemont-Bromberek Csd 113a spends $13,459 per pupil, 21% below the Illinois average, a leaner-resourced district than most.
Lemont-Bromberek Csd 113a also operates Old Quarry Middle Sch (856 students) and Central School (591 students) alongside Oakwood 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
Oakwood 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 | 15.3:1 | ▲ 9% | 14:1 | 15.7:1 |
| Enrollment | 629 | top 18% | - | - |
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: White at 82.2% of enrollment.
Simpson diversity index - at 31.0, Oakwood School is less mixed than the Illinois school average of 38.9.
District-wide per-pupil expenditure for Lemont-Bromberek Csd 113a, which includes Oakwood 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 |
|---|---|---|---|
| Old Quarry Middle Sch | Larger | No free-lunch data | Similar S:T ratio |
| Central School | Similar size | No free-lunch data | Higher S:T ratio |
| River Valley School | Similar size | No free-lunch data | Similar S:T ratio |
Comparisons are relative to Oakwood 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 Oakwood 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.
Oakwood School has 629 students enrolled. It is a public school in Lemont, IL.
The student-teacher ratio at Oakwood School is 15.3:1, which is 9% higher than the Illinois average of 14:1 and 3% lower than the national average of 15.7:1.
The largest demographic group at Oakwood School is White at 82.2% of enrollment, in Lemont, IL.
Oakwood School has a Resource Investment Index of 42/100 (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).
By Resource Investment Index, Oakwood School ranks #3 of 5 public schools in Lemont, 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 Lemont on the city page.
Oakwood School earns 42/100 on the Resource Investment Index, with class sizes larger than 72% of 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 Oakwood School, Lemont-Bromberek Csd 113a also operates Old Quarry Middle Sch (856 students), Central School (591 students), and River Valley School (588 students). See the Lemont-Bromberek Csd 113a 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, “Oakwood School, Lemont 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/oakwood-school-il
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