School overview
At a glance
Reported students
267
NCES CCD 2024–25, where reported
Teachers (FTE)
16.03
NCES CCD 2024–25
Student–teacher ratio
16.7:1
Calculated, not a class-size measure
Grades served
09–12
NCES preliminary directory 2025–26
School benchmarks
Wisconsin high enrollment
50th percentile
Compared with 559 same-level schools reporting enrollment.
District median enrollment
342
Rock River Charter School: 267 reported students.
State peer staffing position
86th percentile
16.7:1 reported; state peer median 13.7:1. Ratio is not class size.
Profile interpretation
What the reported data says about Rock River Charter School
Rock River Charter School is a public high school serving grades 09–12 in Janesville. It is one of 22 current school records connected to Janesville School District. NCES reports 267 students for 2024–25.
Among 559 high schools in Wisconsin with comparable records, this school is close in size than the reported median of 274 students. Its enrollment is at approximately the 50th percentile for that peer group. Size describes the campus, not instructional quality.
The reported student–teacher ratio is 16.7:1, above the Wisconsin median of 13.7:1 for the same school level. This ratio uses total enrollment and teacher FTE; it is not an average classroom headcount and can be affected by special programs or part-time staffing.
The two largest reported race and ethnicity groups are White (63.7%) and Black (12.4%). English learners represent 6.7% of enrollment. Students served under IDEA represent 15.6%. These figures help families understand who the school serves; they are not rating inputs.
Turn data into a school visit
Questions worth asking Rock River Charter School
- 1How do the reported 16.7:1 student–teacher ratio and 16.03 teacher FTE translate into actual class sizes by grade?
- 2Have the reported academic programs changed since the 2021–22 CRDC collection?
- 3How are the school's 0.5 counselor FTE allocated across grades and student needs?
- 4Does community eligibility provide breakfast and lunch to every enrolled student, and are summer meals available?
Student context
Enrollment needs
- English learners
- 6.7%
- Students with disabilities
- 15.6%
- Free/reduced-price lunch
- 76.4%
- Lunch program
- Yes under Community Eligibility Option (CEO)
People available to students
Support staff
- Counselors (FTE)
- 0.5
- Nurses (FTE)
- 0
- Psychologists (FTE)
- 0
- Social workers (FTE)
- 1
Student demographics
Race and ethnicity share of reported enrollment
- White63.7%
- Hispanic10.1%
- Black12.4%
- Asian2.6%
- American Indian / Alaska Native0.4%
- Native Hawaiian / Pacific Islander0%
- Multiracial10.9%
Race/ethnicity: NCES CCD 2024–25 where reported, otherwise CRDC 2021–22. English learner and disability context: CRDC 2021–22. Privacy rules can produce missing values.
Learning opportunities
Programs reported by the school
Advanced Placement
Not reported as offered
Gifted and talented
Not reported as offered
Computer science
Not reported as offered
Program availability is from CRDC 2021–22 and can change. Confirm current courses and eligibility with the school.
Continue exploring
Other schools in Janesville School District
Start with campuses at the same school level or with similar reported enrollment.
Rock University High
High · Grades 09–12
93 reported students
Parker High
High · Grades 09–12
1,272 reported students
Craig High
High · Grades 09–12
1,400 reported students
Adams Elementary
Elementary · Grades PK–05
267 reported students
Harrison Elementary
Elementary · Grades PK–05
266 reported students
Wilson Elementary
Elementary · Grades PK–05
256 reported students