Enrollment
420
Arizona · 2024-25 NCES data
Other / mixed grade configuration · Phoenix, AZ
Clarendon School
Federal NCES profile for Clarendon School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 23/100.
2024-25 NCES dataOther / mixed grade configurationNCES 040567000459
👥 S:T ratio 38
🌟 Gifted program 30
📋 Attendance 0
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Clarendon School earns 23/100 on the Resource Investment Index, with class sizes near the Arizona median.
- #127 of 179
- schools in Phoenix · Resource Index
- 23
- Resource Index · Lower
- 15.6:1
- students per teacher
- 68.8%
- free-lunch eligible
Clarendon School has class sizes near the Arizona median. Computed live against every Arizona school reporting to NCES.
By Resource Investment Index, Clarendon School ranks #127 of 179 schools in Phoenix, AZ.
School address
District: Osborn Elementary District (4262) · Arizona
NCES ID 040567000459 Verify on NCES CCD record →
Teachers (FTE)
27.0
Federal CCD staff survey
Students per teacher
15.6:1
vs 17:1 Arizona avg
-8% vs state
Free-lunch eligible
68.8%
vs 48.3% Arizona avg
+42% vs state
Student-teacher ratio in context
How Clarendon School compares with Arizona and U.S. medians
What stands out at Clarendon School
Clarendon School is a higher-need, mid-sized combined-grade school in Phoenix, Arizona, enrolling 420 students.
At 15.6:1, its student-teacher ratio sits close to the Arizona median, within a few percentage points of the 17:1 state norm, neither notably crowded nor notably small.
Economic need runs somewhat above the state's typical profile, with 68.8% of students eligible for free meals.
With 420 students, its enrollment sits close to the Arizona median campus size.
Its Resource Investment Index lands in the lower third of 2,064 scored Arizona schools.
Among 315 similarly sized, similarly resourced-need Arizona schools statewide, it ranks #231, in the lower tier once campus size and economic need are matched.
Its student body is led by Hispanic or Latino (69%) and White (12%) (diversity index 50/100).
Chronic absenteeism is elevated: 51.0% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Its district draws 22.8% of revenue from federal sources, an above-typical federal share that tends to track a higher-need student population.
Among Phoenix's public schools, it stands alongside Pan-American Charter School (1,221 students): Clarendon School is smaller than that campus by headcount.
Osborn Elementary District (4262) also operates Encanto School (603 students) and Longview Elementary School (483 students) alongside Clarendon 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 Clarendon School compares
Clarendon 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 | 15.6:1 | ▼ 8% | 17:1 | 15.7:1 |
| Free-lunch eligible | 68.8% | ▲ 42% | 48.3% | 51.7% |
| Enrollment | 420 | top 49% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
15.6:1
Leaner classes than 41% of US schools, a middle-of-the-pack class size.
420
Bigger than 50% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
68.8%
free-lunch eligible
- 42% 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
15.6:1
students per teacher
- 8% below state mean
Top 42% in Arizona - lower ratio than 58% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
51.0%
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
$12,098
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
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
4
in-school suspensions + 26 out-of-school
Suspension rate: 1.0 per 100 students. Combined in-school and out-of-school rate: 7.1 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 68.6%
White 12.1%
African American 9.8%
Two or More 4.0%
American Indian / Alaska Native 3.8%
Asian 1.7%
Largest group: Hispanic or Latino at 68.6% of enrollment.
Student-body diversity index 50.2/100
Simpson diversity index - at 50.2, Clarendon School is more mixed than the Arizona school average of 47.2.
Programs
Funding & spending
District-wide per-pupil expenditure for Osborn Elementary District (4262), which includes Clarendon School.
$12,098
Per student
-8%
vs Arizona
Avg $13,145
-27%
vs U.S.
Avg $16,593
Revenue mix
Local 50.7%
State 26.4%
Federal 22.8%
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 Clarendon School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Encanto School | Larger | Lower economic need | Higher S:T ratio |
| Longview Elementary School | Similar size | Similar economic need | Higher S:T ratio |
| Solano School | Similar size | Similar economic need | Higher S:T ratio |
| Osborn Middle School | Similar size | Similar economic need | Lower S:T ratio |
| Montecito Community School | Smaller | Higher economic need | Higher S:T ratio |
Comparisons are relative to Clarendon School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 603
- Students per teacher
- 17.7:1
- Resource Index
- 20/100
- Enrollment
- 483
- Students per teacher
- 17.9:1
- Resource Index
- 19/100
- Enrollment
- 466
- Students per teacher
- 20.3:1
- Resource Index
- 16/100
- Enrollment
- 418
- Students per teacher
- 13.1:1
- Resource Index
- 39/100
- Enrollment
- 128
- Students per teacher
- 18.3:1
- Resource Index
- 50/100
Similar other schools in Phoenix
6 comparable other schools (grades Mixed) serving the same city.
Pan-American Charter School
Standard public school
1,221 students
Great Hearts Academies - Anthem Prep
Standard public school
1,031 students
Westwind Elementary School
Standard public school
932 students 19.4:1 students per teacher
Stetson Hills School
Standard public school
887 students 17.4:1 students per teacher
Union Park School
Standard public school
873 students 19:1 students per teacher
Fireside Elementary School
Standard public school
693 students 15.1:1 students per teacher
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 (~420 students)
Similar student-teacher ratio (~15.6:1)
Next steps
Verify locally before acting on Clarendon School's federal record.
- Compare Clarendon School against another school. Compare schools
- Osborn Elementary District (4262)'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 Clarendon School
How many students attend Clarendon School?
Clarendon School has 420 students enrolled. It is a public school in Phoenix, AZ.
What is the student-teacher ratio at Clarendon School?
The student-teacher ratio at Clarendon School is 15.6:1, which is 8% lower than the Arizona average of 17:1 and 1% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What percentage of students receive free lunch at Clarendon School?
68.8% of students at Clarendon School are eligible for free lunch, compared to the Arizona average of 48.3%.
What is the racial and ethnic makeup of Clarendon School?
The largest demographic group at Clarendon School is Hispanic or Latino at 68.6% of enrollment, in Phoenix, AZ. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 50.2/100.
What is the Resource Investment Index for Clarendon School?
Clarendon School has a Resource Investment Index of 23/100 (lower reported resources relative to schools nationally) based on 3 factors: student-teacher ratio, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Clarendon School rank among schools in Phoenix?
By Resource Investment Index, Clarendon School ranks #127 of 179 schools in Phoenix, AZ. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all schools in Phoenix on the city page.
Is Clarendon School a good school?
Clarendon School earns 23/100 on the Resource Investment Index, with class sizes near the Arizona median. 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 Osborn Elementary District (4262)?
Besides Clarendon School, Osborn Elementary District (4262) also operates Encanto School (603 students), Longview Elementary School (483 students), and Solano School (466 students). See the Osborn Elementary District (4262) 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.