Centennial Middle School

Centennial Middle School is a 6-8 campus of roomy scale in Casper, Wyoming, overseen by Natrona County School District #1, enrolling 755 students in grades 6 through 8. By comparison, Wyoming's public schools average about 319 students each, so Centennial Middle School sits 137% above that benchmark.

Within Natrona County School District #1, which oversees 27 schools and 12,352 students, Centennial Middle School is one campus in the system.

On the student-mix side, Centennial Middle School reports that 80% of the student body identifies as White. The remainder breaks down as 14% Hispanic, 4% multiracial. By comparison, Natrona County as a whole is about 89% White, so the school skews visibly less White than its surroundings.

On the income-and-resources front, Staff filings list 52 full-time-equivalent teachers, which works out to roughly 14.7:1 students per teacher. That figure is higher than the state norm's 12.3:1 average. Roughly 35% of students at Centennial Middle School qualify for free or reduced-price lunch, which schools and policymakers use as a rough income-mix signal. That share is lower than Natrona County's rate of about 46%.

After controlling for student poverty, Centennial Middle School sits in the middle band of the BeatsExpectations distribution. Schools with this campus's student mix typically land near 59.9%; this one delivers 48.8%.

In the surrounding community, census data for Natrona County shows median household earnings sit near $72,156, 28% of adults hold a bachelor's degree or higher, and the poverty rate sits near 7%. In all, Natrona County runs 29 public schools (combined enrollment of about 12,650 students), of which Centennial Middle School is one.

The closest other public school is Summit Elementary School, roughly 0.5 miles away. Counting just inside five miles, 8 other public schools cluster around Centennial Middle School. On composite proficiency, Centennial Middle School comes 7th of 9 in the immediate cluster, behind the nearby-schools average of 53.1%.

The campus sits in an inner-city setting.

Five-year trend. Looking back 7 years, enrollment at Centennial Middle School has stayed largely flat, going from 745 students in 2018 to 755 in 2025.

Within the allk12 community for this school, recent activity here tends to focus on sports schedules, lunch menu changes, and school spirit week. Contributors range from current parents to recent graduates and teachers.