Enrollment
755
Wyoming · 2024-25 NCES data
Middle school (grades 6-8) · Casper, WY
Centennial Middle School
Federal NCES profile for Centennial Middle School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 34/100.
2024-25 NCES dataMiddle school (grades 6-8)NCES 560451000470
👥 S:T ratio 44
🌟 Gifted program 70
🎓 Counselors 0
📋 Attendance 23
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Centennial Middle School earns 34/100 on the Resource Investment Index, with class sizes larger than 82% of Wyoming schools. It is also one of the largest schools in Wyoming.
- #2 of 3
- middle schools in Casper · Resource Index
- 34
- Resource Index · Typical
- 14:1
- large classes for Wyoming
- 23.9%
- free-lunch eligible
Centennial Middle School has class sizes larger than 82% of Wyoming schools. Computed live against every Wyoming school reporting to NCES.
By Resource Investment Index, Centennial Middle School ranks #2 of 3 middle schools in Casper, WY.
School address
District: Natrona County School District #1 · Wyoming
NCES ID 560451000470 Verify on NCES CCD record →
Teachers (FTE)
54.0
Federal CCD staff survey
Students per teacher
14:1
vs 11.4:1 Wyoming avg
+23% vs state
Free-lunch eligible
23.9%
vs 27.4% Wyoming avg
-13% vs state
Student-teacher ratio in context
How Centennial Middle School compares with Wyoming and U.S. medians
What stands out at Centennial Middle School
Centennial Middle School is a large middle school in Casper, Wyoming, enrolling 755 students.
Class loads run somewhat heavier than typical: 14:1 puts it in the larger third of Wyoming schools by student-teacher ratio.
Its free-meal eligibility rate of 23.9% lands close to the Wyoming typical range, neither a high- nor low-need campus by this measure.
By headcount it is one of the larger campuses in Wyoming, bigger than 95% of state schools at 755 students.
Its Resource Investment Index lands in the lower third of 347 scored Wyoming schools.
Against 26 statewide peers matched on enrollment and economic need, it ranks mid-pack at #13.
Its student body is led by White (80%) and Hispanic or Latino (14%) (diversity index 35/100).
Counselor access is stretched at roughly 755 students per counselor, well above the ASCA-recommended 250:1 ceiling.
Chronic absenteeism is elevated: 30.9% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
The surrounding Natrona County School District #1 spends $16,139 per pupil, 28% below the Wyoming average, a leaner-resourced district than most.
Its district draws 15.1% of revenue from federal sources, an above-typical federal share that tends to track a higher-need student population.
Discipline events run high: 235 in- and out-of-school suspensions were reported for 755 students in the 2021-22 Civil Rights Data Collection.
The federal civil-rights collection also records 4 expulsions at this campus for 2021-22.
Among Casper's middle schools, it stands alongside C Y Middle School (766 students): Centennial Middle School is smaller than that campus by headcount and runs leaner classes (14:1 vs 14.7:1).
Natrona County School District #1 also operates Kelly Walsh High School (2,002 students) and Natrona County High School (1,703 students) alongside Centennial Middle School.
Sourced from NCES CCD, CRDC, and F-33 (federal records, not a quality verdict). How we source and compute this.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Centennial Middle School compares
Centennial Middle School on the metrics families compare, against Wyoming and U.S. means.
| Metric | This school | vs Wyoming | Wyoming avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 14:1 | ▲ 23% | 11.4:1 | 15.7:1 |
| Free-lunch eligible | 23.9% | ▼ 13% | 27.4% | 51.7% |
| Enrollment | 755 | top 5% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
14:1
Leaner classes than 57% of US schools, a middle-of-the-pack class size.
755
Bigger than 83% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Economic need
23.9%
free-lunch eligible
- 13% below the Wyoming average of 27.4%
Below the 40% Title I threshold; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
14:1
students per teacher
- 23% above state mean
Top 82% in Wyoming - lower ratio than 18% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
30.9%
chronically absent (missed 10%+ of school days)
At or above 20%, the commonly used threshold for "high" chronic absenteeism, signaling significant barriers to regular attendance.
Funding equity
$16,139
per pupil, district-wide
- below Wyoming avg of $22,313
Close to the U.S. public-school average per-pupil spend.
Support staff
Counselors1.0 FTE
Per 755 students, the combined health-and-guidance staffing load for this school.
Discipline context
129
in-school suspensions + 106 out-of-school
Suspension rate: 17.1 per 100 students. Combined in-school and out-of-school rate: 31.1 per 100 students. Reported via the Civil Rights Data Collection. Includes 4 expulsions.
Overview
- Common Core of Data (June 2026): enrollment, staffing, and the student-teacher ratio above.
- Civil Rights Data Collection: discipline counts and program access (AP, gifted, special education).
- F-33 School District Finance Survey: the district-wide per-pupil spending figures below.
Three separate federal collections, each on its own reporting cadence - which is why this school's numbers line up on a consistent basis against every other school and state on this site, rather than mixing figures pulled from different survey years.
Student demographics
White 79.6%
Hispanic or Latino 13.8%
Two or More 4.4%
African American 1.1%
Asian 0.7%
American Indian / Alaska Native 0.4%
Native Hawaiian / Pacific Islander 0.1%
Largest group: White at 79.6% of enrollment.
Student-body diversity index 34.5/100
Simpson diversity index - at 34.5, Centennial Middle School is about as mixed as the Wyoming school average of 33.2.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Natrona County School District #1, which includes Centennial Middle School.
$16,139
Per student
-28%
vs Wyoming
Avg $22,313
-3%
vs U.S.
Avg $16,593
Revenue mix
Local 20.6%
State 64.3%
Federal 15.1%
Source: NCES F-33 School District Finance Survey District-level finance · FY 2021-22 Per-pupil expenditure reflects the district-wide average. Individual school budgets are not reported at the federal level.
How Centennial Middle School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Kelly Walsh High School | Larger | Similar economic need | Higher S:T ratio |
| Natrona County High School | Larger | Similar economic need | Similar S:T ratio |
| C Y Middle School | Similar size | Similar economic need | Similar S:T ratio |
| Dean Morgan Middle School | Similar size | Higher economic need | Lower S:T ratio |
| Casper Classical Academy | Smaller | Similar economic need | Higher S:T ratio |
Comparisons are relative to Centennial Middle School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 2,002
- Students per teacher
- 15.5:1
- Resource Index
- 43/100
- Enrollment
- 1,703
- Students per teacher
- 14.6:1
- Resource Index
- 48/100
- Enrollment
- 766
- Students per teacher
- 14.7:1
- Resource Index
- 30/100
- Enrollment
- 613
- Students per teacher
- 11.8:1
- Resource Index
- 40/100
- Enrollment
- 516
- Students per teacher
- 16.6:1
- Resource Index
- 29/100
Similar middle schools in Casper
2 comparable middle schools (grades 6-8) serving the same city.
Similar middle schools statewide
Matched by enrollment size and by staffing ratio across all of Wyoming, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~755 students)
Next steps
Verify locally before acting on Centennial Middle School's federal record.
- Compare Centennial Middle School against another school. Compare schools
- Natrona County School District #1's spending and staffing shape this school. District profile
- Confirm current enrollment and boundaries with the school. Choosing guide
Federal record (CCD 2024-25, CRDC 2021-22) - PlainSchools assigns no subjective rating; the composite quality score is a transparent, reproducible index computed from this cited federal data.
Frequently asked questions about Centennial Middle School
How many students attend Centennial Middle School?
Centennial Middle School has 755 students enrolled. It is a middle school in Casper, WY.
What is the student-teacher ratio at Centennial Middle School?
The student-teacher ratio at Centennial Middle School is 14:1, which is 23% higher than the Wyoming average of 11.4:1 and 11% lower than the national average of 15.7:1.
What percentage of students receive free lunch at Centennial Middle School?
23.9% of students at Centennial Middle School are eligible for free lunch, compared to the Wyoming average of 27.4%.
What is the racial and ethnic makeup of Centennial Middle School?
The largest demographic group at Centennial Middle School is White at 79.6% of enrollment, in Casper, WY.
What is the Resource Investment Index for Centennial Middle School?
Centennial Middle School has a Resource Investment Index of 34/100 (typical reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Centennial Middle School rank among middle schools in Casper?
By Resource Investment Index, Centennial Middle School ranks #2 of 3 middle schools in Casper, WY. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all middle schools in Casper on the city page.
Is Centennial Middle School a good school?
Centennial Middle School earns 34/100 on the Resource Investment Index, with class sizes larger than 82% of Wyoming schools. It is also one of the largest schools in Wyoming. This is a resource snapshot, not an academic rating; see the Resource Investment Index question above for what the number does and doesn't measure.
What other schools are in Natrona County School District #1?
Besides Centennial Middle School, Natrona County School District #1 also operates Kelly Walsh High School (2,002 students), Natrona County High School (1,703 students), and C Y Middle School (766 students). See the Natrona County School District #1 district page for the complete list.
Related tools
Every figure on PlainSchools is rendered directly from the source NCES, CRDC and F-33 federal records, no number is typed in by an editor. Each school's figures reflect its most recent NCES/CRDC submission on file. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.