Castle Rock Middle School

Castle Rock Middle School is a big junior high in Billings, Montana, overseen by Billings Elem. The school teaches 691 students in grades 6 through 8. Compared to the state average of about 139 students per school, that is 397% bigger than typical.

Across the 29 schools in Billings Elem (11,377 students total), Castle Rock Middle School accounts for its share of the district's footprint.

On the student-mix side, Castle Rock Middle School shows that 79% of the student body identifies as White. Other groups include 9% multiracial, 6% Hispanic, 5% Native American.

On the income-and-resources front, Staff filings list 39 full-time-equivalent teachers, which works out to roughly 17.6:1 students per teacher. That figure is higher than the state norm's 11.3:1 average. About 40% of enrolled students meet the income threshold for free or reduced-price lunch, often used as a Title I proxy. That share is below Yellowstone County's rate of about 48%.

In the surrounding community, Yellowstone County reports that the typical household earns roughly $76,570 per year, 34% of adults hold a bachelor's degree or higher, and the poverty rate sits near 7%. In all, Yellowstone County runs 68 public schools (combined enrollment of about 23,853 students), of which Castle Rock Middle School is one.

Sandstone School is the nearest neighboring public school, about 0.4 miles from this campus. 8 of the 8 nearest public schools sit inside a five-mile radius.

The campus sits in a downtown setting.

Looking at the recent track record. Looking back 7 years, enrollment at Castle Rock Middle School has expanded 19%, going from 582 students in 2018 to 691 in 2025. The student-to-teacher ratio grew from 15.7:1 in 2018 to 17.6:1 today.

On allk12, the page collects discussion, questions, and updates around classroom updates, athletics, and weather closures. The community welcomes input from current and former families.