Summary:
Zip code 82420 has one listed middle school, Rocky Mountain Middle School, serving grades 6–8 in Cowley; there are no other schools in the list for a local comparison. The school enrolls 250 students, and its student-teacher ratio was 17.4 in 2024–2025. The most pressing result is eighth-grade math: in 2025–2026, 24.1% of students were proficient, 29.8 percentage points below Wyoming’s 53.9%.
There is no separate local top or bottom school, but ELA is Rocky Mountain Middle School’s strongest subject relative to the state, while eighth-grade math is its weakest. The school’s average across grades 6–8 ELA was 50.3%, compared with 59.4% statewide; its smallest individual state gap was 4.4 points in grade 7 ELA. Math and grade 8 science had larger gaps, including 18.4 points in science. The school was below Big Horn County School District #1 in all seven reported subject-grade results, by 1.7 to 6.4 points.
Results weakened overall relative to Wyoming between 2024–2025 and 2025–2026: across the same seven subject-grade results, the school average fell from 43.4% to 41.6%, while the state average rose from 54.0% to 55.7%. There were exceptions: grade 7 math improved 8.8 points, from 31.8% to 40.6%, and its gap to the state narrowed from 18.3 to 12.3 points; grade 6 ELA, by contrast, dropped from 60.9% to 52.6%. SchoolDigger’s statewide ranking declined from 52 of 74 schools (30th percentile) in 2023–2024 to 67 of 76 (12th percentile) in 2025–2026, when it gave the school one star. Other context includes 46.4% of students eligible for free or reduced-price lunch in 2024–2025.
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