- Enrollment
- 1,400
- Students per teacher
- 12.5:1
- Resource Index
- 30/100
Other / mixed grade configuration · Janesville, WI
Rock River Charter School
Federal NCES profile for Rock River Charter School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 16/100.
2024-25 NCES dataOther / mixed grade configurationNCES 550702001698Charter school
👥 S:T ratio 29
🌟 Gifted program 30
🎓 Counselors 0
📋 Attendance 3
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Rock River Charter School earns 16/100 on the Resource Investment Index, with class sizes larger than 89% of Wisconsin schools.
- #18 of 18
- schools in Janesville · Resource Index
- 16
- Resource Index · Lower
- 17.8:1
- large classes for Wisconsin
- 75.9%
- free-lunch eligible
Rock River Charter School has class sizes larger than 89% of Wisconsin schools. Computed live against every Wisconsin school reporting to NCES.
By Resource Investment Index, Rock River Charter School ranks #18 of 18 schools in Janesville, WI.
School address
District: Janesville School District · Wisconsin
NCES ID 550702001698 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
+4 students YoY
Rock River Charter School held near 253 students from 2022-23 to 2023-24 (+4 headcount).
Teacher FTE held 15.8 → 15.7 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Steady CCD campus
+4 students YoY 550702001698 · Janesville, WI Other · SMALL · CHARTER
267 enr · 17.8:1 · 75.9% lunch · RII 16
Nearest enrollment peer: Craig High (1,400 students)
Rock River Charter School held near 253 students from 2022-23 to 2023-24 (+4 headcount). Teacher FTE held 15.8 → 15.7 across the same CCD years. Read with this school → · District book → · Wisconsin schools → · Find another →
Rock River Charter School in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Craig High
Craig High
1,400 students
- Parker High
Parker High
1,272 students
- Marshall Middl
Marshall Middle
747 students
- Edison Middle
Edison Middle
587 students
- Franklin Middl 486
Franklin Middle
486 students
- This school 267
Rock River Charter School
267 students
What this shows Rock River Charter School reports 267 students on the CCD universe file.
How Rock River Charter School compares
Rock River Charter School held steady on CCD headcount: ratios and free-lunch share vs Wisconsin and U.S. means.
| Metric | This school | vs Wisconsin | Wisconsin avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 17.8:1 | ▲ 24% | 14.4:1 | 15.7:1 |
| Free-lunch eligible | 75.9% | ▲ 97% | 38.5% | 51.7% |
| Enrollment | 267 | top 57% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
17.8:1
Leaner classes than 26% of US schools, heavier class loads than most.
267
Bigger than 28% of US schools by enrollment, mid-sized for the country.
Equity indicators methodology
Economic need
75.9%
free-lunch eligible
- 97% above the Wisconsin average of 38.5%
Well above the 40% Title I schoolwide threshold, among the highest-need profiles in the state; federal funds support the whole school, not individual students.
Staffing depth
17.8:1
students per teacher
- 24% above state mean
Top 89% in Wisconsin - lower ratio than 11% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Engagement
38.6%
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
$13,990
per pupil, district-wide
- below Wisconsin avg of $15,645
Well below the U.S. average per-pupil spend, a notably leaner funding position that may affect programs, facilities, and staffing.
Support staff
Counselors0.5 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
0
in-school suspensions + 8 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 3.0 per 100 students. Reported via the Civil Rights Data Collection.
Student demographics
White 63.7%
African American 12.4%
Two or More 10.9%
Hispanic or Latino 10.1%
Asian 2.6%
American Indian / Alaska Native 0.4%
Largest group: White at 63.7% of enrollment.
Student-body diversity index 55.6/100
Simpson diversity index - at 55.6, Rock River Charter School is more mixed than the Wisconsin school average of 35.7.
Programs
District finance for Janesville School District reports $13,990 per pupil (NCES F-33) - open the district page for the full revenue mix.
How Rock River Charter School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Craig High | Larger | Lower economic need | Lower S:T ratio |
| Parker High | Larger | Lower economic need | Lower S:T ratio |
| Marshall Middle | Larger | Lower economic need | Lower S:T ratio |
| Edison Middle | Larger | Lower economic need | Lower S:T ratio |
| Franklin Middle | Larger | Lower economic need | Lower S:T ratio |
Comparisons are relative to Rock River Charter School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,272
- Students per teacher
- 13.1:1
- Resource Index
- 23/100
- Enrollment
- 747
- Students per teacher
- 14.1:1
- Resource Index
- 36/100
- Enrollment
- 587
- Students per teacher
- 12.8:1
- Resource Index
- 43/100
- Enrollment
- 486
- Students per teacher
- 10.1:1
- Resource Index
- 45/100
Similar other schools in Janesville
6 comparable other schools (grades Mixed) serving the same city.
Roosevelt Elementary
Standard public school
412 students 15.3:1 students per teacher
Washington Elementary
Standard public school
410 students 15.2:1 students per teacher
Van Buren Elementary
Standard public school
408 students 14.6:1 students per teacher
Kennedy Elementary
Standard public school
404 students 15:1 students per teacher
Monroe Elementary
Standard public school
376 students 14.5:1 students per teacher
Preschool 4 Janesville
Standard public school
345 students 20.3:1 students per teacher
Nationwide other 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 (~267 students)
Similar student-teacher ratio (~17.8:1)
Frequently asked questions about Rock River Charter School
How many students attend Rock River Charter School?
Rock River Charter School has 267 students enrolled. It is an alternative school in Janesville, WI. CCD year-over-year: 249 (2022-23) → 253 (2023-24), nearly flat (+4).
What is the student-teacher ratio at Rock River Charter School?
The student-teacher ratio at Rock River Charter School is 17.8:1, which is 24% higher than the Wisconsin average of 14.4:1 and 13% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Rock River Charter School?
75.9% of students at Rock River Charter School are eligible for free lunch, compared to the Wisconsin average of 38.5%.
What is the racial and ethnic makeup of Rock River Charter School?
The largest demographic group at Rock River Charter School is White at 63.7% of enrollment, in Janesville, WI. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 55.6/100.
What is the Resource Investment Index for Rock River Charter School?
Rock River Charter School has a Resource Investment Index of 16/100 (lower 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 Rock River Charter School rank among schools in Janesville?
By Resource Investment Index, Rock River Charter School ranks #18 of 18 schools in Janesville, WI. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all schools in Janesville on the city page.
What other schools are in Janesville School District?
Besides Rock River Charter School, Janesville School District also operates Craig High (1,400 students), Parker High (1,272 students), and Marshall Middle (747 students). See the Janesville School District district page for the complete list.