Rimrock Junior/Senior High School

Rimrock Junior/Senior High School is a small, rural combined middle/high school in Bruneau, Idaho, serving 136 students in grades 6-12 as part of the Bruneau-Grand View Joint School District. In 2025-2026, it earned its strongest ranking in recent history—34th out of 122 Idaho high schools, placing in the 72nd percentile with a 4-star rating. That's a dramatic jump from the prior year, when it ranked 82nd with just 1 star, though families should note that such a small student body means year-to-year swings can be significant.

Academically, Rimrock's strengths lie in English language arts and science. All-grades ELA proficiency is 56.9%, above the state's 54.0%, and end-of-course science proficiency is 57.1%, well ahead of Idaho's 41.2% average. The school also matches the state graduation rate at 82.5%, posting a strong 95.7% rate in 2022-2023. Math remains the biggest challenge, with 34.7% proficiency versus 43.1% statewide. However, end-of-course math is 38.1%, above the state's 33.1%, suggesting upper-level math students perform better than middle-grade students.

Compared with nearby options, Rimrock comes out ahead. The Richard McKenna Charter School - Online, under the Idaho Virtual High School Inc. district, ranks in the bottom 10% of Idaho high schools with a 0-star rating, while the Richard McKenna Charter School - Onsite earns 3 stars and a 66th-percentile ranking. Rimrock's 72nd-percentile ranking tops both—and it does so with the lowest student-teacher ratio of the three at 11.5-to-1. Still, real concerns remain. Chronic absenteeism has climbed from 15.0% in 2022-2023 to 23.1% in 2025-2026, well above the 13.8% state rate. The share of students eligible for free or reduced-price lunch has also risen sharply, from 36.0% to 51.5% in three years, signaling growing economic need.