Enrollment
93
Wisconsin · 2024-25 NCES data
High school (grades 9-12) · Janesville, WI
Rock University High
Federal NCES profile for Rock University High, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 22/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 550702002952Charter school
👥 S:T ratio 26
📚 AP courses 15
🌟 Gifted program 30
📋 Attendance 17
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Rock University High earns 22/100 on the Resource Investment Index, with class sizes larger than 91% of Wisconsin schools.
- #2 of 3
- high schools in Janesville · Resource Index
- 22
- Resource Index · Lower
- 18.6:1
- large classes for Wisconsin
- 38.5%
- free-lunch eligible
Rock University High has class sizes larger than 91% of Wisconsin schools. Computed live against every Wisconsin school reporting to NCES.
By Resource Investment Index, Rock University High ranks #2 of 3 high schools in Janesville, WI.
School address
District: Janesville School District · Wisconsin
NCES ID 550702002952 Verify on NCES CCD record →
Teachers (FTE)
5.0
Federal CCD staff survey
Students per teacher
18.6:1
vs 14.4:1 Wisconsin avg
+29% vs state
Free-lunch eligible
38.5%
vs 38.5% Wisconsin avg
+0% vs state
Student-teacher ratio in context
How Rock University High compares with Wisconsin and U.S. medians
What stands out at Rock University High
Rock University High is a small charter high school in Janesville, Wisconsin, enrolling 93 students.
Class loads run heavy: 18.6:1 is larger than about 91% of Wisconsin schools and 29% above the 14.4:1 state mean, so each teacher carries more students than is typical.
Its free-meal eligibility rate of 38.5% lands close to the Wisconsin typical range, neither a high- nor low-need campus by this measure.
Enrollment of 93 puts it in the smaller third of Wisconsin schools by headcount.
Its Resource Investment Index trails 94% of the 2,202 Wisconsin schools with a score on record, one of the lower results on this measure.
Among 163 similarly sized, similarly resourced-need Wisconsin schools statewide, it ranks #152, in the lower tier once campus size and economic need are matched.
Its student body is led by White (76%) and Hispanic or Latino (17%) (diversity index 39/100).
On the academic-pipeline side it reports 3 Advanced Placement courses.
Chronic absenteeism is elevated: 33.3% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Among Janesville's high schools, it stands alongside Craig High (1,400 students): Rock University High is smaller than that campus by headcount and runs heavier classes (18.6:1 vs 12.5:1).
Janesville School District also operates Craig High (1,400 students) and Parker High (1,272 students) alongside Rock University High.
Sourced from NCES CCD, CRDC, and F-33 (federal records, not a quality verdict). How we source and compute this.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Rock University High compares
Rock University High on the metrics families compare, against Wisconsin and U.S. means.
| Metric | This school | vs Wisconsin | Wisconsin avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 18.6:1 | ▲ 29% | 14.4:1 | 15.7:1 |
| Free-lunch eligible | 38.5% | ▼ 0% | 38.5% | 51.7% |
| Enrollment | 93 | top 87% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
18.6:1
Leaner classes than 22% of US schools, heavier class loads than most.
93
Bigger than 9% of US schools by enrollment, a small campus.
Equity indicators (what these measure)
Economic need
38.5%
free-lunch eligible
- 0% above the Wisconsin average of 38.5%
Below the 40% Title I threshold; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
18.6:1
students per teacher
- 29% above state mean
Top 91% in Wisconsin - lower ratio than 9% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Engagement
33.3%
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
$13,579
per pupil, district-wide
- below Wisconsin avg of $14,919
Somewhat below the U.S. average per-pupil spend; funding constraints may affect programs, facilities, and staffing.
Support staff
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
0
in-school suspensions + 0 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 0.0 per 100 students. Reported via the Civil Rights Data Collection.
Overview
- Common Core of Data (June 2026): enrollment, staffing, and the student-teacher ratio above.
- Civil Rights Data Collection: discipline counts and program access (AP, gifted, special education).
- F-33 School District Finance Survey: the district-wide per-pupil spending figures below.
Three separate federal collections, each on its own reporting cadence - which is why this school's numbers line up on a consistent basis against every other school and state on this site, rather than mixing figures pulled from different survey years.
Student demographics
White 76.3%
Hispanic or Latino 17.2%
Two or More 4.3%
African American 2.2%
Largest group: White at 76.3% of enrollment.
Student-body diversity index 38.6/100
Simpson diversity index - at 38.6, Rock University High is more mixed than the Wisconsin school average of 35.7.
Programs
AP courses offered 3
Funding & spending
District-wide per-pupil expenditure for Janesville School District, which includes Rock University High.
$13,579
Per student
-9%
vs Wisconsin
Avg $14,919
-18%
vs U.S.
Avg $16,593
Revenue mix
Local 39.2%
State 49.8%
Federal 11.0%
Source: NCES F-33 School District Finance Survey District-level finance · FY 2021-22 Per-pupil expenditure reflects the district-wide average. Individual school budgets are not reported at the federal level.
How Rock University High Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Craig High | Larger | Similar economic need | Lower S:T ratio |
| Parker High | Larger | Similar economic need | Lower S:T ratio |
| Marshall Middle | Larger | Similar economic need | Lower S:T ratio |
| Edison Middle | Larger | Higher economic need | Lower S:T ratio |
| Franklin Middle | Larger | Higher economic need | Lower S:T ratio |
Comparisons are relative to Rock University High's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,400
- Students per teacher
- 12.5:1
- Resource Index
- 30/100
- 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 high schools in Janesville
2 comparable high schools (grades 9-12) serving the same city.
Similar high schools statewide
Matched by enrollment size and by staffing ratio across all of Wisconsin, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~93 students)
Similar student-teacher ratio (~18.6:1)
Next steps
Verify locally before acting on Rock University High's federal record.
- Compare Rock University High against another school. Compare schools
- Janesville School District's spending and staffing shape this school. District profile
- Confirm current enrollment and boundaries with the school. Choosing guide
Federal record (CCD 2024-25, CRDC 2021-22) - PlainSchools assigns no subjective rating; the composite quality score is a transparent, reproducible index computed from this cited federal data.
Frequently asked questions about Rock University High
How many students attend Rock University High?
Rock University High has 93 students enrolled. It is a high school in Janesville, WI.
What is the student-teacher ratio at Rock University High?
The student-teacher ratio at Rock University High is 18.6:1, which is 29% higher than the Wisconsin average of 14.4:1 and 18% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Rock University High?
38.5% of students at Rock University High are eligible for free lunch, compared to the Wisconsin average of 38.5%.
What is the racial and ethnic makeup of Rock University High?
The largest demographic group at Rock University High is White at 76.3% of enrollment, in Janesville, WI.
What is the Resource Investment Index for Rock University High?
Rock University High has a Resource Investment Index of 22/100 (lower reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, AP course offerings, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Rock University High rank among high schools in Janesville?
By Resource Investment Index, Rock University High ranks #2 of 3 high 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 high schools in Janesville on the city page.
Is Rock University High a good school?
Rock University High earns 22/100 on the Resource Investment Index, with class sizes larger than 91% of Wisconsin schools. This is a resource snapshot, not an academic rating; see the Resource Investment Index question above for what the number does and doesn't measure.
What other schools are in Janesville School District?
Besides Rock University High, 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.
Related tools
Every figure on PlainSchools is rendered directly from the source NCES, CRDC and F-33 federal records, no number is typed in by an editor. Each school's figures reflect its most recent NCES/CRDC submission on file. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.