- Enrollment
- 914
- Students per teacher
- 19.9:1
- Resource Index
- 30/100
Elementary school (grades K-5) · Tolleson, AZ
Tres Rios Elementary School
Federal NCES profile for Tres Rios Elementary School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 29/100.
2024-25 NCES dataElementary school (grades K-5)NCES 040444002908
👥 S:T ratio 18
🌟 Gifted program 70
📋 Attendance 0
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Tres Rios Elementary School earns 29/100 on the Resource Investment Index, with class sizes larger than 78% of Arizona schools.
- #2 of 6
- elementary schools in Tolleson · Resource Index
- 29
- Resource Index · Lower
- 20.4:1
- large classes for Arizona
- 55.9%
- free-lunch eligible
Tres Rios Elementary School has class sizes larger than 78% of Arizona schools. Computed live against every Arizona school reporting to NCES.
By Resource Investment Index, Tres Rios Elementary School ranks #2 of 6 elementary schools in Tolleson, AZ.
School address
District: Littleton Elementary District (4278) · Arizona
NCES ID 040444002908 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
-59 students YoY
Tres Rios Elementary School shrank from 689 students in 2022-23 to 630 in 2023-24 (-8.6%).
Teacher FTE added 35.0 → 38.0 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Shrinking CCD campus
-59 students YoY 040444002908 · Tolleson, AZ Elementary · MID · TRAD
713 enr · 20.4:1 · 55.9% lunch · RII 29
Nearest enrollment peer: Quentin Elementary School (914 students)
Tres Rios Elementary School shrank from 689 students in 2022-23 to 630 in 2023-24 (-8.6%). Teacher FTE added 35.0 → 38.0 across the same CCD years. Read with this school → · District book → · Arizona schools → · Find another →
Tres Rios Elementary School in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Quentin Elemen
Quentin Elementary School
914 students
- Country Place
Country Place Elementary
900 students
- Estrella Vista
Estrella Vista Elementary School
893 students
- Fine Arts Acad
Fine Arts Academy
811 students
- Littleton Elem
Littleton Elementary School
802 students
- This school
Tres Rios Elementary School
713 students
What this shows Tres Rios Elementary School reports 713 students on the CCD universe file.
How Tres Rios Elementary School compares
Tres Rios Elementary School is a shrinking campus on CCD: ratios and free-lunch share vs Arizona and U.S. means.
| Metric | This school | vs Arizona | Arizona avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 20.4:1 | ▲ 20% | 17:1 | 15.7:1 |
| Free-lunch eligible | 55.9% | ▲ 16% | 48.3% | 51.7% |
| Enrollment | 713 | top 20% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
20.4:1
Leaner classes than 15% of US schools, heavier class loads than most.
713
Bigger than 81% of US schools by enrollment, a large campus nationally.
Equity indicators methodology
Economic need
55.9%
free-lunch eligible
- 16% 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
20.4:1
students per teacher
- 20% above state mean
Top 78% in Arizona - lower ratio than 22% of state schools
Above 20:1, running heavier than the typical U.S. public school; staffing is comparatively stretched.
Engagement
44.6%
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
$10,493
per pupil, district-wide
- below Arizona avg of $13,502
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
1
in-school suspensions + 39 out-of-school
Suspension rate: 0.1 per 100 students. Combined in-school and out-of-school rate: 5.6 per 100 students. Reported via the Civil Rights Data Collection.
Student demographics
Hispanic or Latino 82.9%
African American 10.7%
White 3.1%
Two or More 1.8%
Asian 0.7%
Native Hawaiian / Pacific Islander 0.6%
American Indian / Alaska Native 0.3%
Largest group: Hispanic or Latino at 82.9% of enrollment.
Student-body diversity index 30.0/100
Simpson diversity index - at 30.0, Tres Rios Elementary School is less mixed than the Arizona school average of 47.2.
Programs
Gifted & talented Yes
District finance for Littleton Elementary District (4278) reports $10,493 per pupil (NCES F-33) - open the district page for the full revenue mix.
How Tres Rios Elementary School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Quentin Elementary School | Larger | Similar economic need | Similar S:T ratio |
| Country Place Elementary | Larger | Similar economic need | Lower S:T ratio |
| Estrella Vista Elementary School | Larger | Similar economic need | Similar S:T ratio |
| Fine Arts Academy | Similar size | Similar economic need | Higher S:T ratio |
| Littleton Elementary School | Similar size | Similar economic need | Similar S:T ratio |
Comparisons are relative to Tres Rios Elementary School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 900
- Students per teacher
- 18.4:1
- Resource Index
- 32/100
- Enrollment
- 893
- Students per teacher
- 19.8:1
- Resource Index
- 30/100
- Enrollment
- 811
- Students per teacher
- 21.9:1
- Resource Index
- 27/100
- Enrollment
- 802
- Students per teacher
- 20.6:1
- Resource Index
- 32/100
Similar elementary schools in Tolleson
1 comparable elementary schools (grades K-5) serving the same city.
Nationwide elementary schools with similar size or staffing
Out-of-state peers matched by enrollment and by student-teacher ratio, not the same-city or same-district lists above.
Similar enrollment (~713 students)
Frequently asked questions about Tres Rios Elementary School
How many students attend Tres Rios Elementary School?
Tres Rios Elementary School has 713 students enrolled. It is an elementary school in Tolleson, AZ. CCD year-over-year: 689 (2022-23) → 630 (2023-24), down 59.
What is the student-teacher ratio at Tres Rios Elementary School?
The student-teacher ratio at Tres Rios Elementary School is 20.4:1, which is 20% higher than the Arizona average of 17:1 and 30% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Tres Rios Elementary School?
55.9% of students at Tres Rios Elementary School are eligible for free lunch, compared to the Arizona average of 48.3%.
What is the racial and ethnic makeup of Tres Rios Elementary School?
The largest demographic group at Tres Rios Elementary School is Hispanic or Latino at 82.9% of enrollment, in Tolleson, AZ.
What is the Resource Investment Index for Tres Rios Elementary School?
Tres Rios Elementary School has a Resource Investment Index of 29/100 (lower reported resources relative to schools nationally) based on 3 factors: student-teacher ratio, gifted-program reporting, chronic absenteeism. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Tres Rios Elementary School rank among elementary schools in Tolleson?
By Resource Investment Index, Tres Rios Elementary School ranks #2 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.
What other schools are in Littleton Elementary District (4278)?
Besides Tres Rios Elementary School, Littleton Elementary District (4278) also operates Quentin Elementary School (914 students), Country Place Elementary (900 students), and Estrella Vista Elementary School (893 students). See the Littleton Elementary District (4278) district page for the complete list.