Plains High School

Plains High School, an intimate 9-12 campus in Plains, Montana, operated by Plains K-12, serves 121 students, covering grades 9 through 12. By comparison, Montana's public schools average about 238 students each, so Plains High School sits 49% leaner than that benchmark.

Plains High School is one of 3 schools operated by Plains K-12, a district that instructs 404 students overall.

On demographics, Plains High School lists that the student body is overwhelmingly White (93%). Beyond that, the school logs 3% Hispanic, 2% Native American.

In terms of school funding signals, Plains High School logs 11 full-time-equivalent teachers, putting the student-to-teacher ratio at about 11.0:1. The state averages about 11.3:1, putting this campus right in line with peers. Roughly 100% of students at Plains High School qualify for free or reduced-price lunch, which schools and policymakers use as a rough income-mix signal. By comparison, Sanders County runs at roughly 91%, so the school's eligibility rate is above the surrounding baseline.

In the broader community, census data for Sanders County shows median household income runs about $57,476, 22% of adults hold a bachelor's degree or higher, and roughly 10% of residents live below the federal poverty line. Across Sanders County's 16 public schools (combined enrollment of about 1,321 students), Plains High School is one campus in the mix.

The closest other public school is Plains 7-8, roughly 0.0 miles away. Within five miles, there are 2 other public schools.

Plains High School operates from a low-density location.

Looking at the recent track record. Plains High School's enrollment has increased 3% since 2018, when it stood at 117 (now 121). The White share of enrollment expanded from 87% to 93% over that span. Class-load math has pulled in: from 12.2:1 in 2018 to 11.0:1 in 2025.

Inside the community feed, the feed for Plains High School typically covers pickup logistics, teacher feedback, and after-school programs. Members of the school community can share what they know.