Enrollment
384
Arizona · 2024-25 NCES data
Other / mixed grade configuration · Gilbert, AZ
Oak Tree Elementary
Federal NCES profile for Oak Tree Elementary, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 38/100.
2024-25 NCES dataOther / mixed grade configurationNCES 040340001838
👥 S:T ratio 60
🌟 Gifted program 70
🎓 Counselors 23
📋 Attendance 0
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Oak Tree Elementary earns 38/100 on the Resource Investment Index, with class sizes smaller than 92% of Arizona schools.
- #25 of 46
- schools in Gilbert · Resource Index
- 38
- Resource Index · Typical
- 10.1:1
- small classes for Arizona
- 40.0%
- free-lunch eligible
Oak Tree Elementary has class sizes smaller than 92% of Arizona schools. Computed live against every Arizona school reporting to NCES.
By Resource Investment Index, Oak Tree Elementary ranks #25 of 46 schools in Gilbert, AZ.
School address
District: Gilbert Unified District (4239) · Arizona
NCES ID 040340001838 Verify on NCES CCD record →
Teachers (FTE)
38.0
Federal CCD staff survey
Students per teacher
10.1:1
vs 17:1 Arizona avg
-41% vs state
Free-lunch eligible
40.0%
vs 48.3% Arizona avg
-17% vs state
Student-teacher ratio in context
How Oak Tree Elementary compares with Arizona and U.S. medians
What stands out at Oak Tree Elementary
Oak Tree Elementary is a mid-sized combined-grade school in Gilbert, Arizona, enrolling 384 students.
Classes run notably small here: at 10.1:1, Oak Tree Elementary is leaner than roughly 92% of Arizona schools and 41% under the state's 17:1 norm, more adult attention per pupil than most peers.
Economic need runs somewhat below the state's typical profile, with 40.0% of students eligible for free meals.
With 384 students, its enrollment sits close to the Arizona median campus size.
Its Resource Investment Index lands in the upper third of 2,064 scored Arizona schools.
Against 259 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #50.
Its student body is led by Hispanic or Latino (42%) and White (41%) (diversity index 64/100).
Counselor availability sits well past the ASCA benchmark, roughly 384 students sharing each counselor, though short of the most stretched campuses.
Chronic absenteeism is elevated: 46.9% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
The surrounding Gilbert Unified District (4239) spends $9,253 per pupil, 30% below the Arizona average, a leaner-resourced district than most.
Among Gilbert's public schools, it stands alongside Williams Field High School (2,150 students): Oak Tree Elementary is smaller than that campus by headcount and runs leaner classes (10.1:1 vs 21.9:1).
Gilbert Unified District (4239) also operates Highland High School (2,992 students) and Gilbert High School (2,418 students) alongside Oak Tree Elementary.
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 Oak Tree Elementary compares
Oak Tree Elementary on the metrics families compare, against Arizona and U.S. means.
| Metric | This school | vs Arizona | Arizona avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 10.1:1 | ▼ 41% | 17:1 | 15.7:1 |
| Free-lunch eligible | 40.0% | ▼ 17% | 48.3% | 51.7% |
| Enrollment | 384 | top 53% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
10.1:1
Leaner classes than 88% of US schools, among the more generously staffed nationally.
384
Bigger than 45% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
40.0%
free-lunch eligible
- 17% below the Arizona average of 48.3%
Above the 40% Title I schoolwide threshold; federal funds support the whole school, not individual students.
Staffing depth
10.1:1
students per teacher
- 41% below state mean
Top 8% in Arizona - lower ratio than 92% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
46.9%
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
$9,253
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 384 students, the combined health-and-guidance staffing load for this school.
Discipline context
10
in-school suspensions + 8 out-of-school
Suspension rate: 2.6 per 100 students. Combined in-school and out-of-school rate: 4.7 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 42.2%
White 41.4%
Two or More 7.8%
African American 3.9%
American Indian / Alaska Native 2.1%
Asian 1.8%
Native Hawaiian / Pacific Islander 0.8%
Largest group: Hispanic or Latino at 42.2% of enrollment.
Student-body diversity index 64.2/100
Simpson diversity index - at 64.2, Oak Tree Elementary is more mixed than the Arizona school average of 47.2.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Gilbert Unified District (4239), which includes Oak Tree Elementary.
$9,253
Per student
-30%
vs Arizona
Avg $13,145
-44%
vs U.S.
Avg $16,593
Revenue mix
Local 43.1%
State 44.8%
Federal 12.1%
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 Oak Tree Elementary Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Highland High School | Larger | Lower economic need | Higher S:T ratio |
| Gilbert High School | Larger | Lower economic need | Higher S:T ratio |
| Desert Ridge High | Larger | Lower economic need | Higher S:T ratio |
| Campo Verde High School | Larger | Lower economic need | Higher S:T ratio |
| Mesquite High School | Larger | Lower economic need | Higher S:T ratio |
Comparisons are relative to Oak Tree Elementary's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 2,992
- Students per teacher
- 23:1
- Resource Index
- 34/100
- Enrollment
- 2,418
- Students per teacher
- 21.8:1
- Resource Index
- 38/100
- Enrollment
- 2,103
- Students per teacher
- 21.5:1
- Resource Index
- 33/100
- Enrollment
- 1,863
- Students per teacher
- 21.7:1
- Resource Index
- 34/100
- Enrollment
- 1,303
- Students per teacher
- 20:1
- Resource Index
- 31/100
Similar other schools in Gilbert
4 comparable other schools (grades Mixed) serving the same city.
Williams Field High School
Standard public school
2,150 students 21.9:1 students per teacher
Gateway Pointe Elementary
Standard public school
685 students 16.7:1 students per teacher
Great Hearts Academies - Arete Prep
Standard public school
540 students
Learning Foundation and Performing Arts Gilbert
Standard public school
259 students
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 (~384 students)
Similar student-teacher ratio (~10.1:1)
Next steps
Verify locally before acting on Oak Tree Elementary's federal record.
- Compare Oak Tree Elementary against another school. Compare schools
- Gilbert Unified District (4239)'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 Oak Tree Elementary
How many students attend Oak Tree Elementary?
Oak Tree Elementary has 384 students enrolled. It is a public school in Gilbert, AZ.
What is the student-teacher ratio at Oak Tree Elementary?
The student-teacher ratio at Oak Tree Elementary is 10.1:1, which is 41% lower than the Arizona average of 17:1 and 36% 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 Oak Tree Elementary?
40.0% of students at Oak Tree Elementary are eligible for free lunch, compared to the Arizona average of 48.3%.
What is the racial and ethnic makeup of Oak Tree Elementary?
The largest demographic group at Oak Tree Elementary is Hispanic or Latino at 42.2% of enrollment, in Gilbert, AZ. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 64.2/100.
What is the Resource Investment Index for Oak Tree Elementary?
Oak Tree Elementary has a Resource Investment Index of 38/100 (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 Oak Tree Elementary rank among schools in Gilbert?
By Resource Investment Index, Oak Tree Elementary ranks #25 of 46 schools in Gilbert, AZ. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all schools in Gilbert on the city page.
Is Oak Tree Elementary a good school?
Oak Tree Elementary earns 38/100 on the Resource Investment Index, with class sizes smaller than 92% 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 Gilbert Unified District (4239)?
Besides Oak Tree Elementary, Gilbert Unified District (4239) also operates Highland High School (2,992 students), Gilbert High School (2,418 students), and Desert Ridge High (2,103 students). See the Gilbert Unified District (4239) 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.