- Enrollment
- 517
- Students per teacher
- 14.8:1
- Resource Index
- 53/100
High school (grades 9-12) · Port Byron, IL
Riverdale Sr High School
Federal NCES profile for Riverdale Sr High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 48/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 173393003484
👥 S:T ratio 52
🌟 Gifted program 30
🎓 Counselors 68
📋 Attendance 41
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Riverdale Sr High School earns 48/100 on the Resource Investment Index, with class sizes smaller than 71% of Illinois schools.
- #2 of 3
- public schools in Port Byron · Resource Index
- 48
- Resource Index · Typical
- 12:1
- small classes for Illinois
- 324
- students enrolled
Riverdale Sr High School has class sizes smaller than 71% of Illinois schools. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Riverdale Sr High School ranks #2 of 3 public schools in Port Byron, IL.
School address
District: Riverdale Cusd 100 · Illinois
NCES ID 173393003484 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
-4 students YoY
Riverdale Sr High School held near 308 students from 2022-23 to 2023-24 (-4 headcount).
Teacher FTE lost 27.1 → 25.3 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Steady CCD campus
-4 students YoY 173393003484 · Port Byron, IL High · SMALL · TRAD
324 enr · 12:1 · RII 48
Nearest enrollment peer: Riverdale Elem School (517 students)
Riverdale Sr High School held near 308 students from 2022-23 to 2023-24 (-4 headcount). Teacher FTE lost 27.1 → 25.3 across the same CCD years. Read with this school → · District book → · Illinois schools → · Find another →
Riverdale Sr High School in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Riverdale Elem
Riverdale Elem School
517 students
- This school
Riverdale Sr High School
324 students
- Riverdale Midd
Riverdale Middle School
254 students
What this shows Riverdale Sr High School reports 324 students on the CCD universe file.
How Riverdale Sr High School compares
Riverdale Sr High School held steady on CCD headcount: ratios and free-lunch share vs Illinois and U.S. means.
| Metric | This school | vs Illinois | Illinois avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 12:1 | ▼ 14% | 14:1 | 15.7:1 |
| Enrollment | 324 | top 59% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
12:1
Leaner classes than 75% of US schools, among the more generously staffed nationally.
324
Bigger than 36% of US schools by enrollment, mid-sized for the country.
Equity indicators methodology
Staffing depth
12:1
students per teacher
- 14% below state mean
Top 29% in Illinois - lower ratio than 71% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
23.5%
chronically absent (missed 10%+ of school days)
At or above 20%, the commonly used threshold for "high" chronic absenteeism, signaling significant barriers to regular attendance.
Funding equity
$13,909
per pupil, district-wide
- below Illinois avg of $18,196
Well below the U.S. average per-pupil spend, a notably leaner funding position that may affect programs, facilities, and staffing.
Support staff
Counselors2.0 FTE
Per 162 students, the combined health-and-guidance staffing load for this school.
Discipline context
1
in-school suspensions + 9 out-of-school
Suspension rate: 0.3 per 100 students. Combined in-school and out-of-school rate: 3.1 per 100 students. Reported via the Civil Rights Data Collection.
Student demographics
White 89.1%
Hispanic or Latino 5.9%
Two or More 3.7%
African American 0.6%
Asian 0.6%
Largest group: White at 89.1% of enrollment.
Student-body diversity index 20.1/100
Simpson diversity index - at 20.1, Riverdale Sr High School is less mixed than the Illinois school average of 38.9.
Programs
AP program Not offered
District finance for Riverdale Cusd 100 reports $13,909 per pupil (NCES F-33) - open the district page for the full revenue mix.
How Riverdale Sr High School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Riverdale Elem School | Larger | No free-lunch data | Higher S:T ratio |
| Riverdale Middle School | Similar size | No free-lunch data | Higher S:T ratio |
Comparisons are relative to Riverdale Sr High School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 254
- Students per teacher
- 15.9:1
- Resource Index
- 46/100
Nationwide high schools with similar size or staffing
Out-of-state peers matched by enrollment and by student-teacher ratio, not the same-city or same-district lists above.
Similar enrollment (~324 students)
Frequently asked questions about Riverdale Sr High School
How many students attend Riverdale Sr High School?
Riverdale Sr High School has 324 students enrolled. It is a high school in Port Byron, IL. CCD year-over-year: 312 (2022-23) → 308 (2023-24), nearly flat (-4).
What is the student-teacher ratio at Riverdale Sr High School?
The student-teacher ratio at Riverdale Sr High School is 12:1, which is 14% lower than the Illinois average of 14:1 and 24% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What is the racial and ethnic makeup of Riverdale Sr High School?
The largest demographic group at Riverdale Sr High School is White at 89.1% of enrollment, in Port Byron, IL.
What is the Resource Investment Index for Riverdale Sr High School?
Riverdale Sr High School has a Resource Investment Index of 48/100 (typical reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, gifted-program reporting, counselor availability, chronic absenteeism. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Riverdale Sr High School rank among public schools in Port Byron?
By Resource Investment Index, Riverdale Sr High School ranks #2 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.
What other schools are in Riverdale Cusd 100?
Besides Riverdale Sr High School, Riverdale Cusd 100 also operates Riverdale Elem School (517 students) and Riverdale Middle School (254 students). See the Riverdale Cusd 100 district page for the complete list.