At a glance
Reported students
267
NCES CCD 2024–25
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
49th percentile
Compared with 558 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.
Historical enrollment and staffing · CRDC 2021–22
These older figures are kept separate from 2024–25 statistics and benchmarks. Differences between years can reflect changes in enrollment, staffing, or reporting scope.
- Students
- 225
- Teachers (FTE)
- 14.6
- Student–teacher ratio
- 15.4:1
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 558 high schools in Wisconsin with comparable records, this school is close in size to the reported median of 274 students. Its enrollment is at approximately the 49th 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 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.
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?
- 3What counseling support is available today? The school reported 0.5 counselor FTE in 2021–22.
- 4Does community eligibility provide breakfast and lunch to every enrolled student, and are summer meals available?
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)
Reported support staff
- Counselors (FTE)
- 0.5
- Nurses (FTE)
- 0
- Psychologists (FTE)
- 0
- Social workers (FTE)
- 1
CRDC 2021–22 full-time-equivalent counts; verify current assignments with the school.
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. English learner and disability context: CRDC 2021–22. Lunch eligibility: NCES CCD 2024–25. Privacy rules can produce missing values.
Programs reported by the school
AP student enrollment
No students enrolled reported
Gifted and talented
Not reported as offered
Computer science
Not reported as offered
CRDC 2021–22: the AP flag records student enrollment; gifted and computer-science fields describe reported programs/classes. Confirm current courses and eligibility with the school.
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
Public schools near Rock River Charter School
Closest campuses by straight-line distance between NCES geocodes, favoring the same school level. Distance is not drive time or an attendance assignment.
| School | Grades | Students | Distance |
|---|---|---|---|
| Preschool 4 Janesville Other · Janesville School District | PK–PK | 345 | 0.6 mi |
| Craig High High · Janesville School District | 09–12 | 1,400 | 1.2 mi |
| Parker High High · Janesville School District | 09–12 | 1,272 | 2 mi |
| Rock University High High · Charter · Janesville School District | 09–12 | 93 | 6.1 mi |
| Milton High High · Milton School District | 09–12 | 1,057 | 7.3 mi |
| Turner High High · Beloit Turner School District | 09–12 | 459 | 8.8 mi |
Frequently asked questions about Rock River Charter School
What grades does Rock River Charter School serve?
Rock River Charter School reports grades 09–12 in the NCES 2025–26 preliminary directory. It is classified as a high school (alternative school) in Janesville School District.
How many students attend Rock River Charter School?
Rock River Charter School reported 267 students in the NCES 2024–25 membership file. That places it near the 49th percentile among 558 Wisconsin high schools reporting enrollment. The 2021–22 civil-rights collection recorded 225 students.
What is the student–teacher ratio at Rock River Charter School?
The calculated ratio is 16.7:1, based on 267 students and 16.03 full-time-equivalent classroom teachers in 2024–25. The Wisconsin median for the same school level is 13.7:1. A ratio is not the same as average class size.
Is Rock River Charter School a public, charter, or magnet school?
Rock River Charter School is a public school operating as a charter school. Admission can involve an application or lottery, so check enrollment windows with the school.
What share of Rock River Charter School students qualify for free or reduced-price meals?
76.4% of students were eligible for free or reduced-price lunch in 2024–25. The school participates in community eligibility, which can provide meals to every student and changes how eligibility is reported. This describes the students served and is not a quality measure.
Which school district is Rock River Charter School in?
Rock River Charter School is part of Janesville School District, based in Janesville, WI, which operates 22 current schools. Confirm attendance zones and enrollment rules with the district.
What public schools are near Rock River Charter School?
The closest public schools by straight-line distance include Preschool 4 Janesville (0.6 mi), Craig High (1.2 mi), Parker High (2 mi). Distance does not determine eligibility; attendance boundaries and program rules do.