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. District totals are aggregated directly from the schools reporting under this district in the source records. See our
editorial standards & corrections policy, the
methodology behind these numbers, or
report a data error. Data current as of June 2026.
Port Byron, Illinois - 3 schools
An equity score of 24/100 ranks Riverdale Cusd 100 #662 of 763 districts in Illinois (state average 38). Derived live from how evenly resources are distributed across the district's schools.
At $12,896 per pupil, Riverdale Cusd 100 ranks #710 of 848 Illinois districts by per-pupil spending (Illinois districts). NCES F-33 finance data.
1,092
Total Enrollment
3
Schools
$12,896
Per-Pupil Spending
Combined, High
School Types
District-Level NCES Analysis
Riverdale Cusd 100 operates 3 public schools serving 1,092 students, placing it among the smallest districts in Illinois. The school portfolio breaks down into 1 combined, 1 high, 1 middle schools, a small enough portfolio that most families will interact with nearly every campus in the district at some point. These enrollment and school figures come from the NCES Common Core of Data (CCD) 2024-25 release, and the district is based in Rock Island County.
Per-pupil expenditure runs $12,896 according to the NCES F-33 School District Finance Survey, in the lower half of 848 Illinois districts by per-pupil spending. See how Illinois compares in our national per-pupil spending analysis. The funding mix is 57.4% local, 35.8% state, and 6.8% federal, a local-revenue-heavy mix that leaves the district more exposed to property-tax swings and local ballot measures than state-funded peers. The district's equity score is 24/100, ranked #662 of 763 in Illinois against a state average of 38, notably less even than the typical district in the state for how evenly funding reaches its schools.
a 208:1 student-counselor ratio, that meets the ASCA-recommended benchmark, and 13.4% chronic absenteeism from the 2021-22 Civil Rights Data Collection. Demographically, the student body averages 88.2% White, 6.8% Hispanic or Latino, 0.9% African American across the district's schools. Its most demographically mixed campus is Riverdale Elem School, with a diversity index of 24.9/100.
Its largest campus is Riverdale Elem School, enrolling 517 students (47% of the district's total enrollment).
Riverdale Elem School accounts for 47.2% of all Riverdale Cusd 100 student enrollment
That is an overwhelming concentration, leaving the rest of Riverdale Cusd 100 a distant remainder — means Riverdale Cusd 100-wide averages can mask substantial variation outside the dominant entity. Grade band: combined. A single dominant campus often anchors a district's program offerings and staffing patterns; the share helps explain why district-wide averages may not reflect the typical neighbourhood-school experience. When one entity dominates a region's footprint, its programmatic and budget decisions effectively set policy for a majority of the affected population.
Riverdale Cusd 100 school enrollment varies 2.0× across entities
Riverdale Cusd 100 school enrollment ranges from 254 students (lowest) to 517 students (highest), a spread of 263 students. That relatively narrow ratio reflects an unusually homogeneous campus portfolio, most districts have a wider mix of school sizes. Per-school staffing ratios, programme availability, and capital-renovation cycles often diverge inside the same district based on enrollment shape.
Riverdale Cusd 100 student-counselor ratio is 208:1 — low (typically associated with meeting or exceeding the American School Counselor Association (ASCA) recommended 250:1 benchmark, which correlates with stronger college and career counseling capacity)
student-counselor ratio is the simplest comparative metric but it does not capture the full picture: the ratio counts FTE counselors against total enrollment, districts that contract intervention or social-emotional staff outside the counselor classification may be under-counted Lower values often correlate with smaller scale and population characteristics rather than higher resource budgets per se.
Riverdale Cusd 100 chronic absenteeism rate is 13.4% — low (typically associated with lower-than-average attendance disruption; districts in this range often have attendance interventions, robust transportation, or smaller catchments that reduce barriers)
chronic absenteeism rate is the simplest comparative metric but it does not capture the full picture: a student is chronically absent if they miss ≥10% of enrolled days for any reason, illness, family obligations, or disengagement Lower values often correlate with smaller scale and population characteristics rather than higher resource budgets per se.