Enrollment
139
Arizona · 2024-25 NCES data
High school (grades 9-12) · Ajo, AZ
Ajo High School
Federal NCES profile for Ajo High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 10/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 040052003063
👥 S:T ratio 0
📚 AP courses 10
🌟 Gifted program 30
📋 Attendance 0
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Ajo High School earns 10/100 on the Resource Investment Index, with class sizes larger than 99% of Arizona schools.
- 10
- Resource Index · Lower
- 46.3:1
- large classes for Arizona
- 57.8%
- free-lunch eligible
- 139
- students enrolled
Ajo High School has class sizes larger than 99% of Arizona schools. Computed live against every Arizona school reporting to NCES.
School address
District: Ajo Unified District (4409) · Arizona
NCES ID 040052003063 Verify on NCES CCD record →
Teachers (FTE)
3.0
Federal CCD staff survey
Students per teacher
46.3:1
vs 17:1 Arizona avg
+172% vs state
Free-lunch eligible
57.8%
vs 48.3% Arizona avg
+20% vs state
Student-teacher ratio in context
How Ajo High School compares with Arizona and U.S. medians
What stands out at Ajo High School
Ajo High School is a higher-need, mid-sized high school in Ajo, Arizona, enrolling 139 students.
Class loads run heavy: 46.3:1 is larger than about 99% of Arizona schools and 172% above the 17:1 state mean, so each teacher carries more students than is typical.
Economic need runs somewhat above the state's typical profile, with 57.8% of students eligible for free meals.
Enrollment of 139 puts it in the smaller third of Arizona schools by headcount.
Its Resource Investment Index trails 99% of the 2,064 Arizona schools with a score on record, one of the lower results on this measure.
Among 85 similarly sized, similarly resourced-need Arizona schools statewide, it ranks #84, in the lower tier once campus size and economic need are matched.
Its student body is led by Hispanic or Latino (73%) and White (9%) (diversity index 44/100).
No Advanced Placement courses are reported for this campus in the federal data.
Chronic absenteeism is elevated: 51.8% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
The surrounding Ajo Unified District (4409) spends $9,947 per pupil, 24% below the Arizona average, a leaner-resourced district than most.
Its district draws 19.0% of revenue from federal sources, an above-typical federal share that tends to track a higher-need student population.
Discipline events run high: 38 in- and out-of-school suspensions were reported for 139 students in the 2021-22 Civil Rights Data Collection.
Its district, Ajo Unified District (4409), also runs Ajo Elementary School (258 students).
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 Ajo High School compares
Ajo 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 | 46.3:1 | ▲ 172% | 17:1 | 15.7:1 |
| Free-lunch eligible | 57.8% | ▲ 20% | 48.3% | 51.7% |
| Enrollment | 139 | top 77% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
46.3:1
Leaner classes than 0% of US schools, heavier class loads than most.
139
Bigger than 14% of US schools by enrollment, a small campus.
Equity indicators (what these measure)
Economic need
57.8%
free-lunch eligible
- 20% 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
46.3:1
students per teacher
- 172% above state mean
Top 99% in Arizona - lower ratio than 1% of state schools
Well above 20:1, one of the more stretched staffing loads nationally relative to enrollment.
Engagement
51.8%
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
$9,947
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
29
in-school suspensions + 9 out-of-school
Suspension rate: 20.9 per 100 students. Combined in-school and out-of-school rate: 27.3 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 73.4%
White 9.4%
Two or More 7.2%
American Indian / Alaska Native 6.5%
Asian 2.2%
African American 1.4%
Largest group: Hispanic or Latino at 73.4% of enrollment.
Student-body diversity index 44.2/100
Simpson diversity index - at 44.2, Ajo High School is less mixed than the Arizona school average of 47.2.
Programs
AP program Not offered
Funding & spending
District-wide per-pupil expenditure for Ajo Unified District (4409), which includes Ajo High School.
$9,947
Per student
-24%
vs Arizona
Avg $13,145
-40%
vs U.S.
Avg $16,593
Revenue mix
Local 23.1%
State 57.9%
Federal 19.0%
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 Ajo High School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Ajo Elementary School | Larger | Similar economic need | Lower S:T ratio |
Comparisons are relative to Ajo High School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 258
- Students per teacher
- 17.2:1
- Resource Index
- 20/100
Similar high 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 (~139 students)
Similar student-teacher ratio (~46.3:1)
Next steps
Verify locally before acting on Ajo High School's federal record.
- Compare Ajo High School against another school. Compare schools
- Ajo Unified District (4409)'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 Ajo High School
How many students attend Ajo High School?
Ajo High School has 139 students enrolled. It is a high school in Ajo, AZ.
What is the student-teacher ratio at Ajo High School?
The student-teacher ratio at Ajo High School is 46.3:1, which is 172% higher than the Arizona average of 17:1 and 195% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Ajo High School?
57.8% of students at Ajo High School are eligible for free lunch, compared to the Arizona average of 48.3%.
What is the racial and ethnic makeup of Ajo High School?
The largest demographic group at Ajo High School is Hispanic or Latino at 73.4% of enrollment, in Ajo, AZ.
What is the Resource Investment Index for Ajo High School?
Ajo High School has a Resource Investment Index of 10/100 (lower reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
Is Ajo High School a good school?
Ajo High School earns 10/100 on the Resource Investment Index, with class sizes larger than 99% 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 Ajo Unified District (4409)?
Besides Ajo High School, Ajo Unified District (4409) also operates Ajo Elementary School (258 students). See the Ajo Unified District (4409) 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.