Serving 46 students in grades 9-12, Endeavor Charter School ranks in the top 20% of all schools in Wisconsin for overall test scores (math proficiency is top 30%, and reading proficiency is top 20%).
The percentage of students achieving proficiency in math is ≥50% (which is higher than the Wisconsin state average of 40%). The percentage of students achieving proficiency in reading/language arts is <50% (which is higher than the Wisconsin state average of 39%).
The student-teacher ratio of 15:1 is higher than the Wisconsin state level of 13:1.
Minority enrollment is 15% of the student body (majority Hispanic), which is lower than the Wisconsin state average of 34% (majority Hispanic).
Quick Facts (2026)
- School Type: Charter School
- Grades: 9-12
- Enrollment: 46 students
- Student-Teacher Ratio: 15:1
- Minority Enrollment: 15%
- Graduation Rate: ≥50% (Top 1% in WI)
- Math Proficiency: ≥50% (Top 30%)
- Reading Proficiency: <50% (Top 1%)
- Science Proficiency: <50% (Top 1%)
- Source: National Center for Education Statistics (NCES), WI Dept. of Education
School Overview
Endeavor Charter School's student population of 46 students has grown by 21% over five school years.
The teacher population of 3 teachers has declined by 25% over five school years.
School Type
Grades Offered
Grades 9-12
(Supplemental Virtual)
(Supplemental Virtual)
Total Students
46 students
Total Classroom Teachers
3 teachers
Year Founded
1965
School Calendar
Campus Size
40 acres
School Motto
'Education for Life'
Average Class Size
20 students
School Rankings
The diversity score of Endeavor Charter School is 0.27, which is less than the diversity score at state average of 0.54. The school's diversity has stayed relatively flat over five school years.
Math Test Scores (% Proficient)
≥50%
40%
Reading/Language Arts Test Scores (% Proficient)
(20-21)<50%
39%
Science Test Scores (% Proficient)
(20-21)<50%
44%
Student-Teacher Ratio
15:1
13:1
American Indian
n/a
1%
Asian
n/a
4%
Hispanic
9%
14%
Black
n/a
9%
White
85%
66%
Hawaiian
n/a
n/a
Two or more races
6%
6%
All Ethnic Groups
Graduation Rate
(21-22)≥50%
90%
Chronically Absent Students
(22-23)15.2%
24%
Participates in the National School Lunch Program (NSLP)
Yes
Eligible for Free Lunch
28%
36%
Eligible for Reduced Lunch
9%
4%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), WI Dept. of Education
School Notes
- School Mascot: Eagles
Frequently Asked Questions
What schools are Endeavor Charter School often compared to?
Endeavor Charter Schoolis often viewed alongside schools like Watertown High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
≥50% of students have achieved math proficiency (compared to the 40% WI state average), while <50% of students have achieved reading proficiency (compared to the 39% WI state average).
What is the graduation rate of Endeavor Charter School?
The graduation rate of Endeavor Charter School is 50%, which is lower than the Wisconsin state average of 90%.
How many students attend Endeavor Charter School?
46 students attend Endeavor Charter School.
What is the racial composition of the student body?
85% of Endeavor Charter School students are White, 9% of students are Hispanic, and 6% of students are Two or more races.
What is the student-teacher ratio of Endeavor Charter School?
Endeavor Charter School has a student ration of 15:1, which is higher than the Wisconsin state average of 13:1.
What grades does Endeavor Charter School offer ?
Endeavor Charter School offers enrollment in grades 9-12 (Supplemental Virtual).
What school district is Endeavor Charter School part of?
Endeavor Charter School is part of Watertown Unified School District.
School Reviews
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