Centennial Middle School

Centennial Middle School serves 755 students in grades 6–8 in Casper, within Natrona County School District #1. Its most important academic pattern is that ELA is above the state average, while math remains below it: Centennial’s grade-average results were 62% in ELA versus 59% statewide, and 49% in math versus 55% statewide.

Compared with nearby middle schools, Centennial is ahead of the three-school average in all three subjects: its ELA, math and science averages were 62%, 49% and 48%, versus 51%, 46% and 41%. But C Y Middle School scored higher than Centennial in each subject. Centennial’s ELA also outpaced the district average of 55%, while math was 3 points above the district’s 46%; science was 48%, close to the state’s 48% and 4 points above the district’s 44%. Within Centennial, grade 6 ELA stood out at 67%, above the state and all three nearby schools; grade 8 math was weaker at 45%, below the state’s 54% and the district’s 46%. Overall, Centennial scores higher than Dean Morgan Middle School and Casper Classical Academy in all three subject averages.

Results have improved in ELA and math: grade-average ELA rose 7 points, from 55% in 2022–2023 to 62% in 2025–2026, and math rose 11 points, from 38% to 49%; grade 8 science changed little, from 47% to 48%. SchoolDigger ranked Centennial 44th of 76 Wyoming middle schools, at the 42nd percentile with 2 stars in 2025–2026; its overall percentile rose from 19 in 2014–2015. SchoolDigger’s statewide ranking for students with special education needs was at the 11th percentile, compared with 42nd overall; for students with low socioeconomic status, it was at the 17th percentile. Centennial’s 2024–2025 student–teacher ratio was 14.6:1, the highest among the nearby comparison schools, and 35% of students were free/reduced lunch eligible, the lowest reported share in that group.