Enrollment
46
Wisconsin · 2024-25 NCES data
High school (grades 9-12) · Watertown, WI
Endeavor Charter School
Federal NCES profile for Endeavor Charter School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 34/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 551575002981Charter school
👥 S:T ratio 39
📚 AP courses 10
🌟 Gifted program 30
📋 Attendance 57
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Endeavor Charter School earns 34/100 on the Resource Investment Index, with class sizes larger than 75% of Wisconsin schools.
- #8 of 10
- public schools in Watertown · Resource Index
- 34
- Resource Index · Typical
- 15.3:1
- large classes for Wisconsin
- 18.6%
- free-lunch eligible
Endeavor Charter School has class sizes larger than 75% of Wisconsin schools. Computed live against every Wisconsin school reporting to NCES.
By Resource Investment Index, Endeavor Charter School ranks #8 of 10 public schools in Watertown, WI.
School address
District: Watertown Unified School District · Wisconsin
NCES ID 551575002981 Verify on NCES CCD record →
Teachers (FTE)
3.0
Federal CCD staff survey
Students per teacher
15.3:1
vs 14.4:1 Wisconsin avg
+6% vs state
Free-lunch eligible
18.6%
vs 38.5% Wisconsin avg
-52% vs state
Student-teacher ratio in context
How Endeavor Charter School compares with Wisconsin and U.S. medians
What stands out at Endeavor Charter School
Endeavor Charter School is a lower-poverty, small charter high school in Watertown, Wisconsin, enrolling 46 students.
Class loads run somewhat heavier than typical: 15.3:1 puts it in the larger third of Wisconsin schools by student-teacher ratio.
Economic need runs somewhat below the state's typical profile, with 18.6% of students eligible for free meals.
This is a small campus: fewer students than 94% of Wisconsin schools, with 46 enrolled.
Its Resource Investment Index sits near the middle of the pack among 2,202 scored Wisconsin schools.
Against 29 statewide peers matched on enrollment and economic need, it ranks mid-pack at #13.
Its student body is predominantly White (85% of enrollment) (diversity index 27/100).
No Advanced Placement courses are reported for this campus in the federal data.
17.4% of students were chronically absent in the 2021-22 collection, in line with the post-pandemic national range.
The federal civil-rights collection also records 1 expulsion at this campus for 2021-22.
Among Watertown's high schools, it stands alongside Watertown High (1,012 students): Endeavor Charter School is smaller than that campus by headcount and runs heavier classes (15.3:1 vs 14.7:1).
Watertown Unified School District also operates Watertown High (1,012 students) and Riverside Middle (616 students) alongside Endeavor Charter School.
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 Endeavor Charter School compares
Endeavor Charter School on the metrics families compare, against Wisconsin and U.S. means.
| Metric | This school | vs Wisconsin | Wisconsin avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 15.3:1 | ▲ 6% | 14.4:1 | 15.7:1 |
| Free-lunch eligible | 18.6% | ▼ 52% | 38.5% | 51.7% |
| Enrollment | 46 | top 94% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
15.3:1
Leaner classes than 44% of US schools, a middle-of-the-pack class size.
46
Bigger than 5% of US schools by enrollment, a small campus.
Equity indicators (what these measure)
Economic need
18.6%
free-lunch eligible
- 52% below the Wisconsin average of 38.5%
Below the 40% Title I threshold; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
15.3:1
students per teacher
- 6% above state mean
Top 75% in Wisconsin - lower ratio than 25% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
17.4%
chronically absent (missed 10%+ of school days)
In the 15-20% range, nearing the "high" absenteeism threshold.
Funding equity
$14,383
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
1
in-school suspensions + 1 out-of-school
Suspension rate: 2.2 per 100 students. Combined in-school and out-of-school rate: 4.3 per 100 students. Reported via the Civil Rights Data Collection. Includes 1 expulsion.
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 84.8%
Hispanic or Latino 8.7%
Two or More 6.5%
Largest group: White at 84.8% of enrollment.
Student-body diversity index 26.9/100
Simpson diversity index - at 26.9, Endeavor Charter School is less mixed than the Wisconsin school average of 35.7.
Programs
AP program Not offered
Funding & spending
District-wide per-pupil expenditure for Watertown Unified School District, which includes Endeavor Charter School.
$14,383
Per student
-4%
vs Wisconsin
Avg $14,919
-13%
vs U.S.
Avg $16,593
Revenue mix
Local 39.7%
State 49.2%
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 Endeavor Charter School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Watertown High | Larger | Higher economic need | Similar S:T ratio |
| Riverside Middle | Larger | Higher economic need | Lower S:T ratio |
| Webster Elementary | Larger | Higher economic need | Similar S:T ratio |
| Douglas Elementary | Larger | Higher economic need | Lower S:T ratio |
| Schurz Elementary | Larger | Higher economic need | Lower S:T ratio |
Comparisons are relative to Endeavor Charter School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,012
- Students per teacher
- 14.7:1
- Resource Index
- 48/100
- Enrollment
- 616
- Students per teacher
- 12.6:1
- Resource Index
- 50/100
- Enrollment
- 381
- Students per teacher
- 14.1:1
- Resource Index
- 62/100
- Enrollment
- 311
- Students per teacher
- 11.5:1
- Resource Index
- 57/100
- Enrollment
- 223
- Students per teacher
- 10.1:1
- Resource Index
- 60/100
Similar high schools in Watertown
1 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 (~46 students)
Similar student-teacher ratio (~15.3:1)
Next steps
Verify locally before acting on Endeavor Charter School's federal record.
- Compare Endeavor Charter School against another school. Compare schools
- Watertown Unified 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 Endeavor Charter School
How many students attend Endeavor Charter School?
Endeavor Charter School has 46 students enrolled. It is a high school in Watertown, WI.
What is the student-teacher ratio at Endeavor Charter School?
The student-teacher ratio at Endeavor Charter School is 15.3:1, which is 6% higher than the Wisconsin average of 14.4:1 and 3% lower than the national average of 15.7:1.
What percentage of students receive free lunch at Endeavor Charter School?
18.6% of students at Endeavor Charter School are eligible for free lunch, compared to the Wisconsin average of 38.5%.
What is the racial and ethnic makeup of Endeavor Charter School?
The largest demographic group at Endeavor Charter School is White at 84.8% of enrollment, in Watertown, WI.
What is the Resource Investment Index for Endeavor Charter School?
Endeavor Charter School has a Resource Investment Index of 34/100 (typical reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Endeavor Charter School rank among public schools in Watertown?
By Resource Investment Index, Endeavor Charter School ranks #8 of 10 public schools in Watertown, WI. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in Watertown on the city page.
Is Endeavor Charter School a good school?
Endeavor Charter School earns 34/100 on the Resource Investment Index, with class sizes larger than 75% 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 Watertown Unified School District?
Besides Endeavor Charter School, Watertown Unified School District also operates Watertown High (1,012 students), Riverside Middle (616 students), and Webster Elementary (381 students). See the Watertown Unified 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.