Greendale High School is a four-year public high school in Greendale, Wisconsin, a suburb of Milwaukee. Part of the Greendale School District, it serves students in grades 9 through 12.
Serving 909 students in grades 9-12, Greendale High 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 35% (which is lower than the Wisconsin state average of 40%). The percentage of students achieving proficiency in reading/language arts is 39% (which is higher than the Wisconsin state average of 38%).
The student-teacher ratio of 15:1 is higher than the Wisconsin state level of 13:1.
Minority enrollment is 33% of the student body (majority Hispanic), which is equal to the Wisconsin state average of 33% (majority Hispanic).
Quick Facts (2025-26)
- Grades: 9-12
- Enrollment: 909 students
- Student-Teacher Ratio: 15:1
- Minority Enrollment: 33%
- Graduation Rate: 95% (Top 30% in WI)
- Overall Testing Rank: Bottom 50%
- Math Proficiency: 35% (Btm 50%)
- Reading Proficiency: 39% (Top 50%)
- Science Proficiency: 38% (Btm 50%)
- Source: National Center for Education Statistics (NCES), WI Dept. of Education
School Overview
Greendale High School's student population of 909 students has stayed relatively flat over five school years.
The teacher population of 60 teachers has stayed relatively flat over five school years.
Grades Offered
Grades 9-12
(Supplemental Virtual)
(Supplemental Virtual)
Total Students
909 students
Gender %
Total Classroom Teachers
60 teachers
Year Founded
1953
Last Day of School
Sat. May 30, 2026
School Rankings
Greendale High 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 Greendale High School is 0.52, which is less than the diversity score at state average of 0.53. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#1031 out of 1962 schools
(Bottom 50%)
(Bottom 50%)
Math Test Scores (% Proficient)
35%
40%
Reading/Language Arts Test Scores (% Proficient)
39%
38%
Science Test Scores (% Proficient)
38%
44%
Student-Teacher Ratio
15:1
13:1
American Indian
n/a
1%
Asian
6%
4%
Hispanic
18%
14%
Black
3%
9%
White
67%
67%
Hawaiian
n/a
n/a
Two or more races
6%
5%
All Ethnic Groups
Graduation Rate
95%
90%
Participates in the National School Lunch Program (NSLP)
Yes
Eligible for Free Lunch
23%
37%
Eligible for Reduced Lunch
4%
4%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), WI Dept. of Education
Profile last updated: 02/09/2025
Frequently Asked Questions
What is Greendale High School's ranking?
Greendale High School is ranked #1031 out of 1,962 schools, which ranks it among the bottom 50% of public schools in Wisconsin.
What schools are Greendale High School often compared to?
Greendale High Schoolis often viewed alongside schools like Greenfield High School, Franklin High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
35% of students have achieved math proficiency (compared to the 40% WI state average), while 39% of students have achieved reading proficiency (compared to the 38% WI state average).
What is the graduation rate of Greendale High School?
The graduation rate of Greendale High School is 95%, which is higher than the Wisconsin state average of 90%.
How many students attend Greendale High School?
909 students attend Greendale High School.
What is the racial composition of the student body?
67% of Greendale High School students are White, 18% of students are Hispanic, 6% of students are Asian, 6% of students are Two or more races, and 3% of students are Black.
What is the student-teacher ratio of Greendale High School?
Greendale High School has a student ration of 15:1, which is higher than the Wisconsin state average of 13:1.
What grades does Greendale High School offer ?
Greendale High School offers enrollment in grades 9-12 (Supplemental Virtual).
What school district is Greendale High School part of?
Greendale High School is part of Greendale School District.
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