Enrollment
2,026
Arizona · 2024-25 NCES data
Other / mixed grade configuration · Peoria, AZ
Centennial High School
Federal NCES profile for Centennial High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 24/100.
2024-25 NCES dataOther / mixed grade configurationNCES 040625001500
👥 S:T ratio 8
🌟 Gifted program 70
🎓 Counselors 19
📋 Attendance 1
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Centennial High School earns 24/100 on the Resource Investment Index, with class sizes larger than 90% of Arizona schools. It is also one of the largest schools in Arizona.
- #29 of 29
- schools in Peoria · Resource Index
- 24
- Resource Index · Lower
- 23:1
- large classes for Arizona
- 26.0%
- free-lunch eligible
Centennial High School has class sizes larger than 90% of Arizona schools. Computed live against every Arizona school reporting to NCES.
By Resource Investment Index, Centennial High School ranks #29 of 29 schools in Peoria, AZ.
School address
District: Peoria Unified School District (4237) · Arizona
NCES ID 040625001500 Verify on NCES CCD record →
Teachers (FTE)
88.0
Federal CCD staff survey
Students per teacher
23:1
vs 17:1 Arizona avg
+35% vs state
Free-lunch eligible
26.0%
vs 48.3% Arizona avg
-46% vs state
Student-teacher ratio in context
How Centennial High School compares with Arizona and U.S. medians
What stands out at Centennial High School
Centennial High School is a large combined-grade school in Peoria, Arizona, enrolling 2,026 students.
Class loads run heavy: 23:1 is larger than about 90% of Arizona schools and 35% above the 17:1 state mean, so each teacher carries more students than is typical.
Economic need runs somewhat below the state's typical profile, with 26.0% of students eligible for free meals.
By headcount it is one of the larger campuses in Arizona, bigger than 97% of state schools at 2,026 students.
Its Resource Investment Index lands in the lower third of 2,064 scored Arizona schools.
Against 56 statewide peers matched on enrollment and economic need, it ranks mid-pack at #38.
Its student body is led by White (43%) and Hispanic or Latino (40%) (diversity index 64/100).
Counselor access is stretched at roughly 405 students per counselor, well above the ASCA-recommended 250:1 ceiling.
Chronic absenteeism is elevated: 39.6% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
The surrounding Peoria Unified School District (4237) spends $9,168 per pupil, 30% below the Arizona average, a leaner-resourced district than most.
Its district draws 15.6% of revenue from federal sources, an above-typical federal share that tends to track a higher-need student population.
The federal civil-rights collection also records 1 expulsion at this campus for 2021-22.
Among Peoria's public schools, it stands alongside Peoria Ecampus (130 students): Centennial High School is larger than that campus by headcount.
Peoria Unified School District (4237) also operates Liberty High School (2,510 students) and Sunrise Mountain High School (1,896 students) alongside Centennial High 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 High School compares
Centennial High 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 | 23:1 | ▲ 35% | 17:1 | 15.7:1 |
| Free-lunch eligible | 26.0% | ▼ 46% | 48.3% | 51.7% |
| Enrollment | 2,026 | top 3% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
23:1
Leaner classes than 8% of US schools, heavier class loads than most.
2,026
Bigger than 98% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Economic need
26.0%
free-lunch eligible
- 46% below the Arizona average of 48.3%
Below the 40% Title I threshold; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
23:1
students per teacher
- 35% above state mean
Top 90% in Arizona - lower ratio than 10% of state schools
Above 20:1, running heavier than the typical U.S. public school; staffing is comparatively stretched.
Engagement
39.6%
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
$9,168
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
Counselors5.0 FTE
Per 405 students, the combined health-and-guidance staffing load for this school.
Discipline context
137
in-school suspensions + 159 out-of-school
Suspension rate: 6.8 per 100 students. Combined in-school and out-of-school rate: 14.6 per 100 students. Reported via the Civil Rights Data Collection. Includes 1 expulsion.
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 43.4%
Hispanic or Latino 39.9%
African American 5.8%
Two or More 5.6%
Asian 4.0%
American Indian / Alaska Native 0.9%
Native Hawaiian / Pacific Islander 0.4%
Largest group: White at 43.4% of enrollment.
Student-body diversity index 64.4/100
Simpson diversity index - at 64.4, Centennial High School is more mixed than the Arizona school average of 47.2.
Programs
AP courses offered 17
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Peoria Unified School District (4237), which includes Centennial High School.
$9,168
Per student
-30%
vs Arizona
Avg $13,145
-45%
vs U.S.
Avg $16,593
Revenue mix
Local 35.4%
State 49.0%
Federal 15.6%
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 High School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Liberty High School | Similar size | Lower economic need | Similar S:T ratio |
| Sunrise Mountain High School | Similar size | Lower economic need | Lower S:T ratio |
| Ironwood High School | Similar size | Higher economic need | Lower S:T ratio |
| Raymond S. Kellis | Similar size | Higher economic need | Lower S:T ratio |
| Peoria High School | Smaller | Higher economic need | Lower S:T ratio |
Comparisons are relative to Centennial High School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 2,510
- Students per teacher
- 21.6:1
- Resource Index
- 32/100
- Enrollment
- 1,896
- Students per teacher
- 19.2:1
- Resource Index
- 36/100
- Enrollment
- 1,804
- Students per teacher
- 19.8:1
- Resource Index
- 30/100
- Enrollment
- 1,691
- Students per teacher
- 19.7:1
- Resource Index
- 31/100
- Enrollment
- 1,397
- Students per teacher
- 19.1:1
- Resource Index
- 31/100
Similar other schools in Peoria
1 comparable other schools (grades Mixed) serving the same city.
Similar other 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 (~2,026 students)
Similar student-teacher ratio (~23:1)
Next steps
Verify locally before acting on Centennial High School's federal record.
- Compare Centennial High School against another school. Compare schools
- Peoria Unified School District (4237)'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 High School
How many students attend Centennial High School?
Centennial High School has 2,026 students enrolled. It is a public school in Peoria, AZ.
What is the student-teacher ratio at Centennial High School?
The student-teacher ratio at Centennial High School is 23:1, which is 35% higher than the Arizona average of 17:1 and 46% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Centennial High School?
26.0% of students at Centennial High School are eligible for free lunch, compared to the Arizona average of 48.3%.
What is the racial and ethnic makeup of Centennial High School?
The largest demographic group at Centennial High School is White at 43.4% of enrollment, in Peoria, AZ. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 64.4/100.
What is the Resource Investment Index for Centennial High School?
Centennial High School has a Resource Investment Index of 24/100 (lower reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, AP course offerings, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Centennial High School rank among schools in Peoria?
By Resource Investment Index, Centennial High School ranks #29 of 29 schools in Peoria, AZ. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all schools in Peoria on the city page.
Is Centennial High School a good school?
Centennial High School earns 24/100 on the Resource Investment Index, with class sizes larger than 90% of Arizona schools. It is also one of the largest schools in Arizona. 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 Peoria Unified School District (4237)?
Besides Centennial High School, Peoria Unified School District (4237) also operates Liberty High School (2,510 students), Sunrise Mountain High School (1,896 students), and Ironwood High School (1,804 students). See the Peoria Unified School District (4237) 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.