Serving 267 students in grades 9-12, Rock River Charter School ranks in the bottom 50% of all schools in Wisconsin for overall test scores (math proficiency is bottom 50%, and reading proficiency is bottom 50%).
The percentage of students achieving proficiency in math is ≤5% (which is lower than the Wisconsin state average of 40%). The percentage of students achieving proficiency in reading/language arts is ≤5% (which is lower than the Wisconsin state average of 38%).
The student-teacher ratio of 17:1 is higher than the Wisconsin state level of 13:1.
Minority enrollment is 36% of the student body (majority Black and Hispanic), which is higher than the Wisconsin state average of 34% (majority Hispanic and Black).
Quick Facts (26-27)
- School Type: Alternative school / Charter School
- Grades: 9-12
- Enrollment: 267 students
- Student-Teacher Ratio: 17:1
- Minority Enrollment: 36%
- Graduation Rate: 85-89% (Btm 50% in WI)
- Overall Testing Rank: Bottom 50%
- Math Proficiency: ≤5% (Btm 50%)
- Reading Proficiency: ≤5% (Btm 50%)
- Science Proficiency: ≤5% (Btm 50%)
- Attendance Zone: Rock River Charter School's attendance zone covers the entire Janesville, WI school district, encompassing approximately 85.6 square miles. Most students live within a typical 10-12 minute drive, with an average distance of 4.7 miles from the school to the zone's edge, reaching up to 8 miles at its furthest point.
- Source: National Center for Education Statistics (NCES), WI Dept. of Education
School Overview
Rock River Charter School's student population of 267 students has grown by 32% over five school years.
The teacher population of 16 teachers has grown by 6% over five school years.
School Type
Grades Offered
Grades 9-12
(Supplemental Virtual)
(Supplemental Virtual)
Total Students
267 students
Showing 2016–2025. Full 26-year historical data available below ↓
Total Classroom Teachers
16 teachers
Showing 2016–2025. Full 26-year historical data available below ↓
Year Founded
2005
School Calendar
School Rankings
Rock River Charter School ranks within the bottom 50% of all 1,962 schools in Wisconsin (based off of combined math and reading proficiency testing data).
The diversity score of Rock River Charter School is 0.56, which is more than the diversity score at state average of 0.54. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#1899 out of 1962 schools
(Bottom 50%)
(Bottom 50%)
Showing 2013–2023. Full 14-year historical data available below ↓
Math Test Scores (% Proficient)
≤5%
40%
Showing 2013–2023. Full 14-year historical data available below ↓
Reading/Language Arts Test Scores (% Proficient)
≤5%
38%
Showing 2012–2022. Full 13-year historical data available below ↓
Science Test Scores (% Proficient)
≤5%
44%
Student-Teacher Ratio
17:1
13:1
Showing 2016–2025. Full 25-year historical data available below ↓
Asian
3%
4%
Showing 2012–2025. Full 26-year historical data available below ↓
Hispanic
10%
14%
Showing 2016–2025. Full 26-year historical data available below ↓
Black
12%
9%
Showing 2016–2025. Full 26-year historical data available below ↓
White
64%
66%
Showing 2016–2025. Full 26-year historical data available below ↓
Two or more races
11%
6%
Showing 2016–2025. Full 15-year historical data available below ↓
All Ethnic Groups
Showing 2016–2025. Full 26-year historical data available below ↓
Graduation Rate
85-89%
90.5%
Showing 2014–2023. Full 13-year historical data available below ↓
Chronically Absent Students
(22-23)24.7%
24%
Participates in the National School Lunch Program (NSLP)
Yes
Eligible for Free Lunch
73%
36%
Showing 2016–2025. Full 26-year historical data available below ↓
Eligible for Reduced Lunch
3%
4%
Showing 2013–2025. Full 26-year historical data available below ↓
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), WI Dept. of Education
Frequently Asked Questions
What is Rock River Charter School's ranking?
Rock River Charter School is ranked #1899 out of 1,962 schools, which ranks it among the bottom 50% of public schools in Wisconsin.
What schools are Rock River Charter School often compared to?
Rock River Charter Schoolis often viewed alongside schools like Rock University High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
≤5% of students have achieved math proficiency (compared to the 40% WI state average), while ≤5% of students have achieved reading proficiency (compared to the 38% WI state average).
What is the graduation rate of Rock River Charter School?
The graduation rate of Rock River Charter School is 85-89%, which is lower than the Wisconsin state average of 90.5%.
How many students attend Rock River Charter School?
267 students attend Rock River Charter School.
What is the racial composition of the student body?
64% of Rock River Charter School students are White, 12% of students are Black, 11% of students are Two or more races, 10% of students are Hispanic, and 3% of students are Asian.
What is the student-teacher ratio of Rock River Charter School?
Rock River Charter School has a student ration of 17:1, which is higher than the Wisconsin state average of 13:1.
What grades does Rock River Charter School offer ?
Rock River Charter School offers enrollment in grades 9-12 (Supplemental Virtual).
What school district is Rock River Charter School part of?
Rock River Charter School is part of Janesville School District.
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