Enrollment
254
Illinois · 2024-25 NCES data
Middle school (grades 6-8) · Port Byron, IL
Riverdale Middle School
Federal NCES profile for Riverdale Middle School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 46/100.
2024-25 NCES dataMiddle school (grades 6-8)NCES 173393003485
👥 S:T ratio 36
🌟 Gifted program 30
🎓 Counselors 49
📋 Attendance 70
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Riverdale Middle School earns 46/100 on the Resource Investment Index, with class sizes larger than 79% of Illinois schools.
- #3 of 3
- public schools in Port Byron · Resource Index
- 46
- Resource Index · Typical
- 15.9:1
- large classes for Illinois
- 254
- students enrolled
Riverdale Middle School has class sizes larger than 79% of Illinois schools. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Riverdale Middle School ranks #3 of 3 public schools in Port Byron, IL.
School address
District: Riverdale Cusd 100 · Illinois
NCES ID 173393003485 Verify on NCES CCD record →
Teachers (FTE)
16.0
Federal CCD staff survey
Students per teacher
15.9:1
vs 14:1 Illinois avg
+14% vs state
Student-teacher ratio in context
How Riverdale Middle School compares with Illinois and U.S. medians
What stands out at Riverdale Middle School
Riverdale Middle School is a mid-sized middle school in Port Byron, Illinois, enrolling 254 students.
Class loads run somewhat heavier than typical: 15.9:1 puts it in the larger third of Illinois schools by student-teacher ratio.
Enrollment of 254 puts it in the smaller 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 (89% of enrollment) (diversity index 20/100).
Counselor coverage runs a bit thin, about 254 students per counselor, somewhat past the ASCA-recommended 250:1 benchmark.
12.2% of students were chronically absent in the 2021-22 collection, in line with the post-pandemic national range.
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 Elem School (517 students) and Riverdale Sr High School (324 students) alongside Riverdale Middle 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 Middle School compares
Riverdale Middle 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 | 15.9:1 | ▲ 14% | 14:1 | 15.7:1 |
| Enrollment | 254 | top 73% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
15.9:1
Leaner classes than 39% of US schools, a middle-of-the-pack class size.
254
Bigger than 26% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Staffing depth
15.9:1
students per teacher
- 14% above state mean
Top 79% in Illinois - lower ratio than 21% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
12.2%
chronically absent (missed 10%+ of school days)
In the 10-15% range, above the pre-pandemic national baseline but within the broader post-pandemic picture.
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
Counselors1.0 FTE
Per 254 students, the combined health-and-guidance staffing load for this school.
Discipline context
1
in-school suspensions + 1 out-of-school
Suspension rate: 0.4 per 100 students. Combined in-school and out-of-school rate: 0.8 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 89.4%
Hispanic or Latino 5.5%
Two or More 2.4%
Asian 1.6%
African American 1.2%
Largest group: White at 89.4% of enrollment.
Student-body diversity index 19.7/100
Simpson diversity index - at 19.7, Riverdale Middle 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 Middle 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 Middle School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Riverdale Elem School | Larger | No free-lunch data | Similar S:T ratio |
| Riverdale Sr High School | Larger | No free-lunch data | Lower S:T ratio |
Comparisons are relative to Riverdale Middle School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 517
- Students per teacher
- 14.8:1
- Resource Index
- 53/100
- Enrollment
- 324
- Students per teacher
- 12:1
- Resource Index
- 48/100
Similar middle 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 (~254 students)
Similar student-teacher ratio (~15.9:1)
Next steps
Verify locally before acting on Riverdale Middle School's federal record.
- Compare Riverdale Middle 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 Middle School
How many students attend Riverdale Middle School?
Riverdale Middle School has 254 students enrolled. It is a middle school in Port Byron, IL.
What is the student-teacher ratio at Riverdale Middle School?
The student-teacher ratio at Riverdale Middle School is 15.9:1, which is 14% higher than the Illinois average of 14:1 and 1% higher than the national average of 15.7:1.
What is the racial and ethnic makeup of Riverdale Middle School?
The largest demographic group at Riverdale Middle School is White at 89.4% of enrollment, in Port Byron, IL.
What is the Resource Investment Index for Riverdale Middle School?
Riverdale Middle School has a Resource Investment Index of 46/100 (typical reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Riverdale Middle School rank among public schools in Port Byron?
By Resource Investment Index, Riverdale Middle School ranks #3 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 Middle School a good school?
Riverdale Middle School earns 46/100 on the Resource Investment Index, with class sizes larger than 79% 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.
What other schools are in Riverdale Cusd 100?
Besides Riverdale Middle School, Riverdale Cusd 100 also operates Riverdale Elem School (517 students) and Riverdale Sr High School (324 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.