Enrollment
465
Illinois · 2024-25 NCES data
Other / mixed grade configuration · O Fallon, IL
Federal NCES profile for Estelle Kampmeyer Elem School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 38/100.
The verdict
Estelle Kampmeyer Elem School earns 38/100 on the Resource Investment Index, with class sizes larger than 93% of Illinois schools.
Estelle Kampmeyer Elem School has class sizes larger than 93% of Illinois schools. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Estelle Kampmeyer Elem School ranks #3 of 5 schools in O Fallon, IL.
NCES ID 172976003086 Verify on NCES CCD record →
Enrollment
465
Illinois · 2024-25 NCES data
Teachers (FTE)
25.0
Federal CCD staff survey
Students per teacher
18.6:1
vs 14:1 Illinois avg
+33% vs state
How Estelle Kampmeyer Elem School compares with Illinois and U.S. medians
Larger classes than state median
18.6:1 - 4.6 above the Illinois state median of 14:1, indicating larger average class loads than typical schools in the state.
Estelle Kampmeyer Elem School is a mid-sized combined-grade school in O Fallon, Illinois, enrolling 465 students.
Class loads run heavy: 18.6:1 is larger than about 93% of Illinois schools and 33% above the 14:1 state mean, so each teacher carries more students than is typical.
Enrollment of 465 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 White (71%) and African American (11%) (diversity index 47/100).
16.3% of students were chronically absent in the 2021-22 collection, in line with the post-pandemic national range.
The surrounding O Fallon Ccsd 90 spends $11,064 per pupil, 35% below the Illinois average, a leaner-resourced district than most.
Among O Fallon's public schools, it stands alongside Marie Schaefer Elem School (598 students): Estelle Kampmeyer Elem School is smaller than that campus by headcount and runs heavier classes (18.6:1 vs 18.1:1).
O Fallon Ccsd 90 also operates Fulton Jr High School (667 students) and Amelia V Carriel Jr High (664 students) alongside Estelle Kampmeyer 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
Estelle Kampmeyer 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 | 18.6:1 | ▲ 33% | 14:1 | 15.7:1 |
| Enrollment | 465 | top 35% | - | - |
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 70.8% of enrollment.
Simpson diversity index - at 47.4, Estelle Kampmeyer Elem School is more mixed than the Illinois school average of 38.9.
District-wide per-pupil expenditure for O Fallon Ccsd 90, which includes Estelle Kampmeyer Elem 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 |
|---|---|---|---|
| Fulton Jr High School | Larger | No free-lunch data | Similar S:T ratio |
| Amelia V Carriel Jr High | Larger | No free-lunch data | Higher S:T ratio |
| Marie Schaefer Elem School | Larger | No free-lunch data | Similar S:T ratio |
| Delores Moye Elem School | Larger | No free-lunch data | Lower S:T ratio |
| J Emmett Hinchcliffe Sr Elem Sch | Similar size | No free-lunch data | Similar S:T ratio |
Comparisons are relative to Estelle Kampmeyer Elem School's own figures; each column derives from NCES Common Core of Data.
4 comparable other schools (grades Mixed) serving the same city.
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 Estelle Kampmeyer Elem 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.
Estelle Kampmeyer Elem School has 465 students enrolled. It is a public school in O Fallon, IL.
The student-teacher ratio at Estelle Kampmeyer Elem School is 18.6:1, which is 33% higher than the Illinois average of 14:1 and 18% higher than the national average of 15.7:1.
The largest demographic group at Estelle Kampmeyer Elem School is White at 70.8% of enrollment, in O Fallon, IL.
Estelle Kampmeyer Elem School has a Resource Investment Index of 38/100 (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, Estelle Kampmeyer Elem School ranks #3 of 5 schools in O Fallon, IL. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all schools in O Fallon on the city page.
Estelle Kampmeyer Elem School earns 38/100 on the Resource Investment Index, with class sizes larger than 93% 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 Estelle Kampmeyer Elem School, O Fallon Ccsd 90 also operates Fulton Jr High School (667 students), Amelia V Carriel Jr High (664 students), and Marie Schaefer Elem School (598 students). See the O Fallon Ccsd 90 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, “Estelle Kampmeyer Elem School, O Fallon 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/estelle-kampmeyer-elem-school-il
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