Enrollment
517
Illinois · 2024-25 NCES data
Other / mixed grade configuration · Port Byron, IL
Riverdale Elem School
Federal NCES profile for Riverdale Elem School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 53/100.
2024-25 NCES dataOther / mixed grade configurationNCES 173393003483
👥 S:T ratio 41
🌟 Gifted program 30
📋 Attendance 89
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Riverdale Elem School earns 53/100 on the Resource Investment Index, with class sizes near the Illinois median.
- #1 of 3
- public schools in Port Byron · Resource Index
- 53
- Resource Index · Higher
- 14.8:1
- students per teacher
- 517
- students enrolled
Riverdale Elem School has class sizes near the Illinois median. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Riverdale Elem School ranks #1 of 3 public schools in Port Byron, IL.
School address
District: Riverdale Cusd 100 · Illinois
NCES ID 173393003483 Verify on NCES CCD record →
Teachers (FTE)
35.0
Federal CCD staff survey
Students per teacher
14.8:1
vs 14:1 Illinois avg
+6% vs state
Student-teacher ratio in context
How Riverdale Elem School compares with Illinois and U.S. medians
What stands out at Riverdale Elem School
Riverdale Elem School is a mid-sized combined-grade school in Port Byron, Illinois, enrolling 517 students.
Class loads run somewhat heavier than typical: 14.8:1 puts it in the larger third of Illinois schools by student-teacher ratio.
Enrollment of 517 puts it in the larger third of Illinois schools by headcount.
Its Resource Investment Index lands in the upper third of 3,845 scored Illinois schools.
Its student body is predominantly White (86% of enrollment) (diversity index 25/100).
Attendance holds up well here: only 4.6% of students were chronically absent, below the typical post-pandemic national figure.
The surrounding Riverdale Cusd 100 spends $12,896 per pupil, 24% below the Illinois average, a leaner-resourced district than most.
Riverdale Cusd 100 also operates Riverdale Sr High School (324 students) and Riverdale Middle School (254 students) alongside Riverdale 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
How Riverdale Elem School compares
Riverdale 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 | 14.8:1 | ▲ 6% | 14:1 | 15.7:1 |
| Enrollment | 517 | top 28% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
14.8:1
Leaner classes than 49% of US schools, a middle-of-the-pack class size.
517
Bigger than 64% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Staffing depth
14.8:1
students per teacher
- 6% above state mean
Top 67% in Illinois - lower ratio than 33% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
4.6%
chronically absent (missed 10%+ of school days)
Below 5%, comfortably under the pre-pandemic national baseline for chronic absenteeism.
Funding equity
$12,896
per pupil, district-wide
- below Illinois avg of $17,042
Well below the U.S. average per-pupil spend, a notably leaner funding position that may affect programs, facilities, and staffing.
Support staff
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
1
in-school suspensions + 1 out-of-school
Suspension rate: 0.2 per 100 students. Combined in-school and out-of-school rate: 0.4 per 100 students. Reported via the Civil Rights Data Collection.
Overview
- Common Core of Data (June 2026): enrollment, staffing, and the student-teacher ratio above.
- Civil Rights Data Collection: discipline counts and program access (AP, gifted, special education).
- F-33 School District Finance Survey: the district-wide per-pupil spending figures below.
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.
Student demographics
White 86.1%
Hispanic or Latino 8.9%
Two or More 3.7%
African American 0.8%
American Indian / Alaska Native 0.4%
Asian 0.2%
Largest group: White at 86.1% of enrollment.
Student-body diversity index 24.9/100
Simpson diversity index - at 24.9, Riverdale Elem School is less mixed than the Illinois school average of 38.9.
Programs
Funding & spending
District-wide per-pupil expenditure for Riverdale Cusd 100, which includes Riverdale Elem School.
$12,896
Per student
-24%
vs Illinois
Avg $17,042
-22%
vs U.S.
Avg $16,593
Revenue mix
Local 57.4%
State 35.8%
Federal 6.8%
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.
How Riverdale Elem School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Riverdale Sr High School | Smaller | No free-lunch data | Lower S:T ratio |
| Riverdale Middle School | Smaller | No free-lunch data | Similar S:T ratio |
Comparisons are relative to Riverdale Elem School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 324
- Students per teacher
- 12:1
- Resource Index
- 48/100
- Enrollment
- 254
- Students per teacher
- 15.9:1
- Resource Index
- 46/100
Similar other schools statewide
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.
Similar enrollment (~517 students)
Similar student-teacher ratio (~14.8:1)
Next steps
Verify locally before acting on Riverdale Elem School's federal record.
- Compare Riverdale Elem School against another school. Compare schools
- Riverdale Cusd 100's spending and staffing shape this school. District profile
- Confirm current enrollment and boundaries with the school. Choosing guide
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.
Frequently asked questions about Riverdale Elem School
How many students attend Riverdale Elem School?
Riverdale Elem School has 517 students enrolled. It is a public school in Port Byron, IL.
What is the student-teacher ratio at Riverdale Elem School?
The student-teacher ratio at Riverdale Elem School is 14.8:1, which is 6% higher than the Illinois average of 14:1 and 6% lower than the national average of 15.7:1.
What is the racial and ethnic makeup of Riverdale Elem School?
The largest demographic group at Riverdale Elem School is White at 86.1% of enrollment, in Port Byron, IL.
What is the Resource Investment Index for Riverdale Elem School?
Riverdale Elem School has a Resource Investment Index of 53/100 (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).
How does Riverdale Elem School rank among public schools in Port Byron?
By Resource Investment Index, Riverdale Elem School ranks #1 of 3 public schools in Port Byron, 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 Port Byron on the city page.
Is Riverdale Elem School a good school?
Riverdale Elem School earns 53/100 on the Resource Investment Index, with class sizes near the Illinois median. 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.
What other schools are in Riverdale Cusd 100?
Besides Riverdale Elem School, Riverdale Cusd 100 also operates Riverdale Sr High School (324 students) and Riverdale Middle School (254 students). See the Riverdale Cusd 100 district page for the complete list.
Related tools
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.