Serving 417 students in grades Kindergarten-4, Mill Valley Elementary School ranks in the top 1% of all schools in Wisconsin for overall test scores (math proficiency is top 1%, and reading proficiency is top 1%).
The percentage of students achieving proficiency in math is 85-89% (which is higher than the Wisconsin state average of 40%). The percentage of students achieving proficiency in reading/language arts is 76% (which is higher than the Wisconsin state average of 38%).
The student-teacher ratio of 13:1 is equal to the Wisconsin state level of 13:1.
Minority enrollment is 17% of the student body (majority Hispanic), which is lower than the Wisconsin state average of 34% (majority Hispanic).
Quick Facts (2026)
- Grades: Kindergarten-4
- Enrollment: 417 students
- Student-Teacher Ratio: 13:1
- Minority Enrollment: 17%
- Overall Testing Rank: Top 1% in WI
- Math Proficiency: 85-89% (Top 1%)
- Reading Proficiency: 76% (Top 1%)
- Science Proficiency: 90-94% (Top 1%)
- Attendance Zone: Mill Valley Elementary serves the northwest area of Muskego, WI, encompassing approximately 6.2 square miles. Most students live within a 5-10 minute drive, with an average distance of 0.7 miles to the school's edge and the furthest point being 2.8 miles away.
- Source: National Center for Education Statistics (NCES), WI Dept. of Education
Top Rankings
Mill Valley Elementary School ranks among the top 20% of public schools in Wisconsin for:
Category
Attribute
Overall Rank
Math Proficiency
Reading/Language Arts Proficiency
Science Proficiency
School Overview
Mill Valley Elementary School's student population of 417 students has declined by 15% over five school years.
The teacher population of 32 teachers has stayed relatively flat over five school years.
Grades Offered
Grades Kindergarten-4
(Supplemental Virtual)
(Supplemental Virtual)
Total Students
417 students
Total Classroom Teachers
32 teachers
School Calendar
School Motto
Every student Learning, Growing…Succeeding
School Rankings
Mill Valley Elementary School ranks within the top 1% of all 1,962 schools in Wisconsin (based off of combined math and reading proficiency testing data).
The diversity score of Mill Valley Elementary School is 0.30, 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.
Overall Testing Rank
#8 out of 1962 schools
(Top 1%)
(Top 1%)
Math Test Scores (% Proficient)
85-89%
40%
Reading/Language Arts Test Scores (% Proficient)
76%
38%
Science Test Scores (% Proficient)
90-94%
44%
Student-Teacher Ratio
13:1
13:1
American Indian
n/a
1%
Asian
1%
4%
Hispanic
10%
14%
Black
1%
9%
White
83%
66%
Hawaiian
n/a
n/a
Two or more races
5%
6%
All Ethnic Groups
Chronically Absent Students
(22-23)6.2%
24%
Participates in the National School Lunch Program (NSLP)
Yes
Eligible for Free Lunch
11%
36%
Eligible for Reduced Lunch
2%
4%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), WI Dept. of Education
Frequently Asked Questions
What is Mill Valley Elementary School's ranking?
Mill Valley Elementary School is ranked #8 out of 1,962 schools, which ranks it among the top 1% of public schools in Wisconsin.
What schools are Mill Valley Elementary School often compared to?
Mill Valley Elementary Schoolis often viewed alongside schools like Marcy Elementary School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
85-89% of students have achieved math proficiency (compared to the 40% WI state average), while 76% of students have achieved reading proficiency (compared to the 38% WI state average).
How many students attend Mill Valley Elementary School?
417 students attend Mill Valley Elementary School.
What is the racial composition of the student body?
83% of Mill Valley Elementary School students are White, 10% of students are Hispanic, 5% of students are Two or more races, 1% of students are Asian, and 1% of students are Black.
What is the student-teacher ratio of Mill Valley Elementary School?
Mill Valley Elementary School has a student ration of 13:1, which is equal to the Wisconsin state average of 13:1.
What grades does Mill Valley Elementary School offer ?
Mill Valley Elementary School offers enrollment in grades Kindergarten-4 (Supplemental Virtual).
What school district is Mill Valley Elementary School part of?
Mill Valley Elementary School is part of Muskego-Norway School District.
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