Middleton Mill Creek Elementary

Middleton Mill Creek Elementary is a PK–5 school in Middleton, Idaho, serving 690 students as part of the Middleton District—and it stands out as one of the strongest elementary schools in southwestern Idaho's immediate area. In 2025–2026, the school ranked 68th out of 346 Idaho elementary schools, placing it in the 80th percentile with a 4-star rating. Math proficiency reached 62.4%, well above the district's 47.8% and the state's 43.1%, while English language arts proficiency hit 65.6% versus 58.2% for the district and 54.0% statewide.

Mill Creek is the clear academic leader among nearby schools. Within the same district, it outperforms Middleton Heights Elementary by roughly 10 percentage points in both math and ELA, and Purple Sage Elementary by an even wider margin. The divide is stark just a few miles away: Sacajawea Elementary posts 19.2% math proficiency and Washington Elementary 25.2%, while Mill Creek tops 62%. Mill Creek also has the lowest poverty rate in the area, with 27.4% of students qualifying for free or reduced-price lunch—compared to 38.1% at Middleton Heights, 51.7% at East Canyon Elementary, and over 70% at several Caldwell schools. It achieves these results while spending just $6,395 per student, less than every other nearby school with reported spending.

A few areas are worth watching. Fifth-grade science proficiency (48.3%) trails the district average of 50.8%, and math proficiency dips slightly in 5th grade even as reading skills continue to climb. Chronic absenteeism affects 18.5% of students—well below the district's 42.1% but above the state's 13.8%. The school has improved dramatically over the past decade, rising from a 2-star rating in 2011–2012 to consistent 4-star ratings since 2021–2022, and rising poverty rates have not yet translated into lower test scores. For parents seeking a high-performing, efficient elementary school in the Middleton area, Mill Creek is an excellent choice.