Enrollment
646
Arizona · 2024-25 NCES data
Middle school (grades 6-8) · Yuma, AZ
Centennial Middle School
Federal NCES profile for Centennial Middle School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 23/100.
2024-25 NCES dataMiddle school (grades 6-8)NCES 040240001976
👥 S:T ratio 22
🌟 Gifted program 70
🎓 Counselors 0
📋 Attendance 0
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Centennial Middle School earns 23/100 on the Resource Investment Index, with class sizes larger than 74% of Arizona schools.
- #2 of 7
- middle schools in Yuma · Resource Index
- 23
- Resource Index · Lower
- 19.6:1
- large classes for Arizona
- 64.9%
- free-lunch eligible
Centennial Middle School has class sizes larger than 74% of Arizona schools. Computed live against every Arizona school reporting to NCES.
By Resource Investment Index, Centennial Middle School ranks #2 of 7 middle schools in Yuma, AZ.
School address
District: Crane Elementary District (4501) · Arizona
NCES ID 040240001976 Verify on NCES CCD record →
Teachers (FTE)
33.0
Federal CCD staff survey
Students per teacher
19.6:1
vs 17:1 Arizona avg
+15% vs state
Free-lunch eligible
64.9%
vs 48.3% Arizona avg
+34% vs state
Student-teacher ratio in context
How Centennial Middle School compares with Arizona and U.S. medians
What stands out at Centennial Middle School
Centennial Middle School is a higher-need, mid-sized middle school in Yuma, Arizona, enrolling 646 students.
Class loads run somewhat heavier than typical: 19.6:1 puts it in the larger third of Arizona schools by student-teacher ratio.
Economic need runs somewhat above the state's typical profile, with 64.9% of students eligible for free meals.
Enrollment of 646 puts it in the larger third of Arizona schools by headcount.
Its Resource Investment Index lands in the lower third of 2,064 scored Arizona schools.
Against 315 statewide peers matched on enrollment and economic need, it ranks mid-pack at #210.
Its student body is predominantly Hispanic or Latino (87% of enrollment) (diversity index 24/100).
Counselor access is stretched at roughly 646 students per counselor, well above the ASCA-recommended 250:1 ceiling.
Chronic absenteeism is elevated: 73.4% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
The surrounding Crane Elementary District (4501) spends $8,920 per pupil, 32% below the Arizona average, a leaner-resourced district than most.
Its district draws 27.7% of revenue from federal sources, an above-typical federal share that tends to track a higher-need student population.
Discipline events run high: 177 in- and out-of-school suspensions were reported for 646 students in the 2021-22 Civil Rights Data Collection.
Crane Elementary District (4501) also operates Gowan Science Academy (816 students) and Pueblo Elementary School (598 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 Arizona and U.S. means.
| Metric | This school | vs Arizona | Arizona avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 19.6:1 | ▲ 15% | 17:1 | 15.7:1 |
| Free-lunch eligible | 64.9% | ▲ 34% | 48.3% | 51.7% |
| Enrollment | 646 | top 25% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
19.6:1
Leaner classes than 17% of US schools, heavier class loads than most.
646
Bigger than 76% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
64.9%
free-lunch eligible
- 34% above the Arizona average of 48.3%
Above the 40% Title I schoolwide threshold; federal funds support the whole school, not individual students.
Staffing depth
19.6:1
students per teacher
- 15% above state mean
Top 74% in Arizona - lower ratio than 26% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Engagement
73.4%
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
$8,920
per pupil, district-wide
- below Arizona avg of $13,145
Well below the U.S. average per-pupil spend, a notably leaner funding position that may affect programs, facilities, and staffing.
Support staff
Counselors1.0 FTE
Per 646 students, the combined health-and-guidance staffing load for this school.
Discipline context
108
in-school suspensions + 69 out-of-school
Suspension rate: 16.7 per 100 students. Combined in-school and out-of-school rate: 27.4 per 100 students. Reported via the Civil Rights Data Collection.
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
Hispanic or Latino 86.7%
White 9.4%
Two or More 1.4%
African American 1.1%
Asian 0.8%
American Indian / Alaska Native 0.3%
Native Hawaiian / Pacific Islander 0.3%
Largest group: Hispanic or Latino at 86.7% of enrollment.
Student-body diversity index 23.9/100
Simpson diversity index - at 23.9, Centennial Middle School is less mixed than the Arizona school average of 47.2.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Crane Elementary District (4501), which includes Centennial Middle School.
$8,920
Per student
-32%
vs Arizona
Avg $13,145
-46%
vs U.S.
Avg $16,593
Revenue mix
Local 14.7%
State 57.7%
Federal 27.7%
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 |
|---|---|---|---|
| Gowan Science Academy | Larger | Lower economic need | Higher S:T ratio |
| Pueblo Elementary School | Similar size | Similar economic need | Higher S:T ratio |
| Salida Del Sol Elementary | Similar size | Similar economic need | Lower S:T ratio |
| Mesquite Elementary | Similar size | Lower economic need | Higher S:T ratio |
| Crane Middle School | Similar size | Lower 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
- 816
- Students per teacher
- 26.3:1
- Resource Index
- 38/100
- Enrollment
- 598
- Students per teacher
- 23:1
- Resource Index
- 20/100
- Enrollment
- 588
- Students per teacher
- 17.3:1
- Resource Index
- 25/100
- Enrollment
- 568
- Students per teacher
- 22.7:1
- Resource Index
- 13/100
- Enrollment
- 554
- Students per teacher
- 21.3:1
- Resource Index
- 21/100
Similar middle schools statewide
Matched by enrollment size and by staffing ratio across all of Arizona, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~646 students)
Similar student-teacher ratio (~19.6:1)
Next steps
Verify locally before acting on Centennial Middle School's federal record.
- Compare Centennial Middle School against another school. Compare schools
- Crane Elementary District (4501)'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 646 students enrolled. It is a middle school in Yuma, AZ.
What is the student-teacher ratio at Centennial Middle School?
The student-teacher ratio at Centennial Middle School is 19.6:1, which is 15% higher than the Arizona average of 17:1 and 25% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Centennial Middle School?
64.9% of students at Centennial Middle School are eligible for free lunch, compared to the Arizona average of 48.3%.
What is the racial and ethnic makeup of Centennial Middle School?
The largest demographic group at Centennial Middle School is Hispanic or Latino at 86.7% of enrollment, in Yuma, AZ.
What is the Resource Investment Index for Centennial Middle School?
Centennial Middle School has a Resource Investment Index of 23/100 (lower 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 Yuma?
By Resource Investment Index, Centennial Middle School ranks #2 of 7 middle schools in Yuma, AZ. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all middle schools in Yuma on the city page.
Is Centennial Middle School a good school?
Centennial Middle School earns 23/100 on the Resource Investment Index, with class sizes larger than 74% of Arizona schools. 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 Crane Elementary District (4501)?
Besides Centennial Middle School, Crane Elementary District (4501) also operates Gowan Science Academy (816 students), Pueblo Elementary School (598 students), and Salida Del Sol Elementary (588 students). See the Crane Elementary District (4501) 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.