Mill Valley Elementary

As a middle-of-the-pack elementary campus in Muskego, Wisconsin, Mill Valley Elementary teaches 417 students from grades K through 4, part of Muskego-Norway School District. That puts it 29% above the typical public school in Wisconsin, which averages around 323 students.

Muskego-Norway School District runs 6 schools in total, collectively educating 4,602 students. Mill Valley Elementary is one of those campuses.

On the student-mix side, Mill Valley Elementary reports that nearly all students (83%) are White. Other groups include 10% Hispanic, 5% multiracial. That composition is broadly in line with Waukesha County as a whole.

On the income-and-resources front, Staff filings list 32 full-time-equivalent teachers, which works out to roughly 13.0:1 students per teacher. That figure is tighter than the state norm's 14.7:1 average. Around 13% of the student body qualifies for free or reduced-price meals, a commonly cited indicator of low-income enrollment.

On a residual basis (actual vs predicted given the student mix), Mill Valley Elementary sits in the middle band of the BeatsExpectations distribution. Schools with this campus's student mix typically land near 69.5%; this one delivers 82.5%.

In the surrounding community, census data for Waukesha County shows the typical household earns roughly $106,076 per year, 49% of adults hold a bachelor's degree or higher, and the poverty rate sits near 3%. In all, Waukesha County runs 113 public schools (combined enrollment of about 60,032 students), of which Mill Valley Elementary is one.

Bay Lane Elementary is the nearest neighboring public school, about 2.3 miles from this campus. 8 of the 8 nearest public schools sit inside a five-mile radius. Among the 9 schools in that immediate cluster with test data (this one included), Mill Valley Elementary ranks 1st on composite proficiency, higher than the local average of 72.0%.

The campus sits in a commuter-belt setting.

Five-year trend. Looking back 7 years, enrollment at Mill Valley Elementary has increased 12%, going from 373 students in 2018 to 417 in 2025. White enrollment moved from 92% to 83% across the same window. The student-to-teacher ratio fell from 16.1:1 in 2018 to 13.0:1 today.

On allk12, the feed for Mill Valley Elementary typically covers classroom updates, athletics, and weather closures. The community welcomes input from current and former families.