Enrollment
614
Arizona · 2024-25 NCES data
Elementary school (grades K-5) · Tolleson, AZ
Dos Rios Elementary
Federal NCES profile for Dos Rios Elementary, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 26/100.
2024-25 NCES dataElementary school (grades K-5)NCES 040882002794
👥 S:T ratio 34
🌟 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
Dos Rios Elementary earns 26/100 on the Resource Investment Index, with class sizes near the Arizona median.
- #4 of 6
- elementary schools in Tolleson · Resource Index
- 26
- Resource Index · Lower
- 16.6:1
- students per teacher
- 53.0%
- free-lunch eligible
Dos Rios Elementary has class sizes near the Arizona median. Computed live against every Arizona school reporting to NCES.
By Resource Investment Index, Dos Rios Elementary ranks #4 of 6 elementary schools in Tolleson, AZ.
School address
District: Union Elementary District (4277) · Arizona
NCES ID 040882002794 Verify on NCES CCD record →
Teachers (FTE)
37.0
Federal CCD staff survey
Students per teacher
16.6:1
vs 17:1 Arizona avg
-2% vs state
Free-lunch eligible
53.0%
vs 48.3% Arizona avg
+10% vs state
Student-teacher ratio in context
How Dos Rios Elementary compares with Arizona and U.S. medians
What stands out at Dos Rios Elementary
Dos Rios Elementary is a higher-need, mid-sized elementary school in Tolleson, Arizona, enrolling 614 students.
At 16.6:1, 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.
Its free-meal eligibility rate of 53.0% lands close to the Arizona typical range, neither a high- nor low-need campus by this measure.
Enrollment of 614 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 340 statewide peers matched on enrollment and economic need, it ranks mid-pack at #200.
Its student body is led by Hispanic or Latino (75%) and African American (14%) (diversity index 41/100).
Counselor access is stretched at roughly 614 students per counselor, well above the ASCA-recommended 250:1 ceiling.
Chronic absenteeism is elevated: 63.0% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
The surrounding Union Elementary District (4277) spends $9,744 per pupil, 26% below the Arizona average, a leaner-resourced district than most.
Its district draws 25.6% of revenue from federal sources, an above-typical federal share that tends to track a higher-need student population.
Among Tolleson's elementary schools, it stands alongside Tolleson Virtual Academy (37 students): Dos Rios Elementary is larger than that campus by headcount and runs heavier classes (16.6:1 vs 6.2:1).
Union Elementary District (4277) also operates Hurley Ranch Elementary (703 students) and Union Elementary School (313 students) alongside Dos Rios 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 Dos Rios Elementary compares
Dos Rios 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 | 16.6:1 | ▼ 2% | 17:1 | 15.7:1 |
| Free-lunch eligible | 53.0% | ▲ 10% | 48.3% | 51.7% |
| Enrollment | 614 | top 27% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
16.6:1
Leaner classes than 33% of US schools, heavier class loads than most.
614
Bigger than 74% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
53.0%
free-lunch eligible
- 10% 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
16.6:1
students per teacher
- 2% below state mean
Top 51% in Arizona - lower ratio than 49% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Engagement
63.0%
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
$9,744
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 614 students, the combined health-and-guidance staffing load for this school.
Discipline context
9
in-school suspensions + 25 out-of-school
Suspension rate: 1.5 per 100 students. Combined in-school and out-of-school rate: 5.5 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 75.1%
African American 14.0%
White 3.9%
American Indian / Alaska Native 3.9%
Asian 1.5%
Native Hawaiian / Pacific Islander 1.1%
Two or More 0.5%
Largest group: Hispanic or Latino at 75.1% of enrollment.
Student-body diversity index 41.3/100
Simpson diversity index - at 41.3, Dos Rios Elementary is less mixed than the Arizona school average of 47.2.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Union Elementary District (4277), which includes Dos Rios Elementary.
$9,744
Per student
-26%
vs Arizona
Avg $13,145
-41%
vs U.S.
Avg $16,593
Revenue mix
Local 21.4%
State 53.1%
Federal 25.6%
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 Dos Rios Elementary Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Hurley Ranch Elementary | Similar size | Similar economic need | Higher S:T ratio |
| Union Elementary School | Smaller | Similar economic need | Higher S:T ratio |
Comparisons are relative to Dos Rios Elementary's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 703
- Students per teacher
- 22:1
- Resource Index
- 21/100
- Enrollment
- 313
- Students per teacher
- 19.6:1
- Resource Index
- 22/100
Similar elementary schools in Tolleson
1 comparable elementary schools (grades K-5) serving the same city.
Similar elementary 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 (~614 students)
Next steps
Verify locally before acting on Dos Rios Elementary's federal record.
- Compare Dos Rios Elementary against another school. Compare schools
- Union Elementary District (4277)'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 Dos Rios Elementary
How many students attend Dos Rios Elementary?
Dos Rios Elementary has 614 students enrolled. It is an elementary school in Tolleson, AZ.
What is the student-teacher ratio at Dos Rios Elementary?
The student-teacher ratio at Dos Rios Elementary is 16.6:1, which is 2% lower than the Arizona average of 17:1 and 6% higher 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 Dos Rios Elementary?
53.0% of students at Dos Rios Elementary are eligible for free lunch, compared to the Arizona average of 48.3%.
What is the racial and ethnic makeup of Dos Rios Elementary?
The largest demographic group at Dos Rios Elementary is Hispanic or Latino at 75.1% of enrollment, in Tolleson, AZ.
What is the Resource Investment Index for Dos Rios Elementary?
Dos Rios Elementary has a Resource Investment Index of 26/100 (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 Dos Rios Elementary rank among elementary schools in Tolleson?
By Resource Investment Index, Dos Rios Elementary ranks #4 of 6 elementary schools in Tolleson, AZ. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all elementary schools in Tolleson on the city page.
Is Dos Rios Elementary a good school?
Dos Rios Elementary earns 26/100 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 Union Elementary District (4277)?
Besides Dos Rios Elementary, Union Elementary District (4277) also operates Hurley Ranch Elementary (703 students) and Union Elementary School (313 students). See the Union Elementary District (4277) 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.