Enrollment
145
Illinois · 2024-25 NCES data
Other / mixed grade configuration · Rock Falls, IL
Federal NCES profile for Riverdale Preschool Center, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 15/100.
The verdict
Riverdale Preschool Center earns 15/100 on the Resource Investment Index, with class sizes larger than 99% of Illinois schools.
Riverdale Preschool Center has class sizes larger than 99% of Illinois schools. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Riverdale Preschool Center ranks #7 of 7 public schools in Rock Falls, IL.
NCES ID 173435006211 Verify on NCES CCD record →
Enrollment
145
Illinois · 2024-25 NCES data
Teachers (FTE)
4.0
Federal CCD staff survey
Students per teacher
36.3:1
vs 14:1 Illinois avg
+159% vs state
How Riverdale Preschool Center compares with Illinois and U.S. medians
Larger classes than state median
36.3:1 - 22.3 above the Illinois state median of 14:1, indicating larger average class loads than typical schools in the state.
Riverdale Preschool Center is a small combined-grade school in Rock Falls, Illinois, enrolling 145 students.
Class loads run heavy: 36.3:1 is larger than about 99% of Illinois schools and 159% above the 14:1 state mean, so each teacher carries more students than is typical.
Enrollment of 145 puts it in the smaller third of Illinois schools by headcount.
Its Resource Investment Index trails 99% of the 3,845 Illinois schools with a score on record, one of the lower results on this measure.
Its student body is led by White (66%) and Hispanic or Latino (23%) (diversity index 51/100).
Its district draws 19.1% of revenue from federal sources, an above-typical federal share that tends to track a higher-need student population.
Among Rock Falls's public schools, it stands alongside East Coloma - Nelson Elem Sch (214 students): Riverdale Preschool Center is smaller than that campus by headcount and runs heavier classes (36.3:1 vs 10.2:1).
Rock Falls Esd 13 also operates Dillon Elementary School (278 students) and Merrill Elem School (258 students) alongside Riverdale Preschool Center.
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
Riverdale Preschool Center on the metrics families compare, against Illinois and U.S. means.
| Metric | This school | vs Illinois | Illinois avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 36.3:1 | ▲ 159% | 14:1 | 15.7:1 |
| Enrollment | 145 | top 90% | - | - |
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 65.5% of enrollment.
Simpson diversity index - at 51.3, Riverdale Preschool Center is more mixed than the Illinois school average of 38.9.
District-wide per-pupil expenditure for Rock Falls Esd 13, which includes Riverdale Preschool Center.
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 |
|---|---|---|---|
| Dillon Elementary School | Larger | No free-lunch data | Lower S:T ratio |
| Merrill Elem School | Larger | No free-lunch data | Lower S:T ratio |
| Rock Falls Middle School | Larger | No free-lunch data | Lower S:T ratio |
Comparisons are relative to Riverdale Preschool Center's own figures; each column derives from NCES Common Core of Data.
1 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 Riverdale Preschool Center'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.
Riverdale Preschool Center has 145 students enrolled. It is a public school in Rock Falls, IL.
The student-teacher ratio at Riverdale Preschool Center is 36.3:1, which is 159% higher than the Illinois average of 14:1 and 131% higher than the national average of 15.7:1.
The largest demographic group at Riverdale Preschool Center is White at 65.5% of enrollment, in Rock Falls, IL. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 51.3/100.
Riverdale Preschool Center has a Resource Investment Index of 15/100 (lower reported resources relative to schools nationally) based on 2 factors: 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, Riverdale Preschool Center ranks #7 of 7 public schools in Rock Falls, 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 Rock Falls on the city page.
Riverdale Preschool Center earns 15/100 on the Resource Investment Index, with class sizes larger than 99% 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 Riverdale Preschool Center, Rock Falls Esd 13 also operates Dillon Elementary School (278 students), Merrill Elem School (258 students), and Rock Falls Middle School (246 students). See the Rock Falls Esd 13 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, “Riverdale Preschool Center, Rock Falls 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/riverdale-preschool-center-il/
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