Enrollment
557
Arizona · 2024-25 NCES data
2024-25 NCES data Other / mixed grade configuration NCES 040292002436
Copper Basin — San Tan Valley, AZ
Federal NCES profile for Copper Basin, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators — Resource Investment Index 34/100.
👥 Class size 31
🌟 Gifted program 70
📋 Attendance 0
How this works: Each indicator above is scored 0–100 from federal NCES and CRDC data, then averaged into the Resource Investment Index. This measures resource allocation — staffing, programs, and support services — not standardized test scores or academic outcomes. Full methodology →
School address
District: Florence Unified School District (4437) · Arizona
Public location data per NCES (National Center for Education Statistics) Common Core of Data. Verify the school's current address on the NCES CCD record.
Teachers (FTE)
37.0
Federal CCD staff survey
Students per teacher
17.3:1
vs 17.7:1 Arizona avg
-2% vs state
Free-lunch eligible
45.0%
vs 48.3% Arizona avg
-7% vs state
Student-teacher ratio in context
How Copper Basin compares with Arizona and U.S. medians
The federal record — no proprietary index, no editorial formula.
PlainSchools publishes the actual federal measurements — enrollment, staffing, demographics, discipline, and finance — straight from the NCES Common Core of Data, CRDC, and F-33 surveys. No composite rating, no opinion-based score on top. You get the same raw numbers researchers and policymakers use, with benchmarks, spending context, and equity indicators computed from the same federal datasets. Full methodology linked below.
What this school's NCES data tells you
Copper Basin reports 557 enrolled students to the National Center for Education Statistics (NCES) alongside 37.0 full-time-equivalent teachers, producing a 17.3:1 student-teacher ratio. That figure sits 2% below the Arizona state mean of 17.7:1, signalling more teacher attention per pupil than the state benchmark. Against the national 2024-25 average of 15.9:1, it is 9% higher, a useful calibration for families comparing districts across state lines.
Title I and federal lunch eligibility offer another window into the student body: 45.0% of pupils qualify for free meals, a proxy for household income that federal programs use to direct funding. The free-lunch share is 7% below the Arizona average and 13% below the national baseline. Chronic absenteeism — missing 10% or more of school days — stands at 49.4% according to the 2021-22 Civil Rights Data Collection.
On the finance side, the surrounding Florence Unified School District (4437) spends $9,579 per pupil district-wide, below the Arizona average of $15,070 and below the national average of $19,490. Revenue comes 31.7% from local sources (property taxes), 52.4% from the state, and 16.0% from federal programs per the NCES F-33 finance survey. Taken together, these measurements produce a Resource Investment Index of 34/100 (F), calculated from 3 distinct NCES and CRDC indicators measuring resource allocation rather than academic outcomes.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Copper Basin compares
Cross-validating school-level NCES values against Arizona state and U.S. national means lets readers see whether this school is an outlier or in line with peers.
| Metric | This school | vs Arizona | Arizona avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 17.3:1 | ▼ 2% | 17.7:1 | 15.9:1 |
| Free-lunch eligible | 45.0% | ▼ 7% | 48.3% | 51.8% |
| Enrollment | 557 | top 67% | — | — |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
What the federal data reveals about equity at this school
Federal measurements — not ratings — surface the resource and opportunity picture. Below are the indicators that researchers, civil-rights monitors, and funding formulas use to assess equity.
Economic need
45.0%
free-lunch eligible
— 7% 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
17.3:1
students per teacher
— 2% below state mean
Top 50% in Arizona — lower ratio than 50% of state schools
Between 15:1 and 20:1 — in line with the typical U.S. public-school staffing range.
Engagement
49.4%
chronically absent (missed 10%+ of school days)
Chronic absenteeism at or above 20% — the CDC threshold for "high" — signals significant barriers to regular attendance.
Funding equity
$9,579
per pupil, district-wide
— below Arizona avg of $15,070
Below the U.S. average per-pupil spend — funding constraints may affect programs, facilities, and staffing.
Support staff
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
62
in-school suspensions + 41 out-of-school
Suspension rate: 11.1 per 100 students. Combined in-school and out-of-school rate: 18.5 per 100 students. Reported via the Civil Rights Data Collection.
Overview
Enrollment 557 Top 67% in Arizona — larger than 33% of 2,186 state schools
Teachers (FTE) 37.0
Students per teacher 17.3:1 -2% vs state
Free-lunch eligible 45.0% -7% vs state
NCES ID 040292002436
Student demographics
Hispanic or Latino 47.4%
White 35.9%
African American 7.2%
Two or More 5.2%
American Indian / Alaska Native 2.9%
Native Hawaiian / Pacific Islander 0.9%
Asian 0.5%
Largest group: Hispanic or Latino at 47.4% of enrollment.
Programs & staff
Gifted & talented Yes
Counselors (FTE) 0.0
Discipline & special education
Chronically absent 49.4%
In-school suspensions 62
Out-of-school suspensions 41
Funding & spending
District-wide per-pupil expenditure for Florence Unified School District (4437), which includes Copper Basin.
$9,579
Per student
-36%
vs Arizona
Avg $15,070
-51%
vs U.S.
Avg $19,490
Revenue mix
Local 31.7%
State 52.4%
Federal 16.0%
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.
Other Schools in This District
- Enrollment
- 1,310
- Students per teacher
- 19.6:1
- Enrollment
- 857
- Students per teacher
- 19:1
- Enrollment
- 805
- Students per teacher
- 19.8:1
- Enrollment
- 793
- Students per teacher
- 17.2:1
- Enrollment
- 728
- Students per teacher
- 17.7:1
Similar other schools in San Tan Valley
6 comparable other schools (grades Mixed) serving the same city.
American Leadership Academy Ironwood K12
Standard public school
2,084 students
Poston Butte High School
Standard public school
1,310 students 19.6:1 students per teacher
Combs High School
Standard public school
1,182 students 23:1 students per teacher
Walker Butte K-8
Standard public school
718 students 17.7:1 students per teacher
San Tan Heights Elementary
Standard public school
669 students 17.1:1 students per teacher
Skyline Ranch Elementary School
Standard public school
583 students 14.2:1 students per teacher
Educator & family resources
In-depth guides on understanding NCES data, school choice, and education funding.
Understanding NCES data
How CCD, CRDC and EDFacts feed every public-school number you see.
Choose a school district
Eight signals that matter more than the overall ranking number.
How schools are funded
Title I, F-33, state aid formulas and what per-pupil spending really means.
Chronic absenteeism
Why missing 10% of school matters and how it varies by district.
Magnet vs charter vs traditional
Three school types, three funding models, three sets of trade-offs.
School discipline data
What CRDC suspension and expulsion records do and don't reveal.
Frequently asked questions about Copper Basin
How many students attend Copper Basin?
Copper Basin has 557 students enrolled. It is a other school in San Tan Valley, AZ.
What is the student-teacher ratio at Copper Basin?
The student-teacher ratio at Copper Basin is 17.3:1, which is 2% lower than the Arizona average of 17.7:1 and 9% higher than the national average of 15.9:1. Lower ratios generally mean more individual attention per student.
What percentage of students receive free lunch at Copper Basin?
45.0% of students at Copper Basin are eligible for free lunch, compared to the Arizona average of 48.3%.
What is the racial and ethnic makeup of Copper Basin?
The largest demographic group at Copper Basin is Hispanic or Latino at 47.4%. The school serves a diverse student body in San Tan Valley, AZ.
What is the Resource Investment Index for Copper Basin?
Copper Basin has a Resource Investment Index of 34/100 (F) based on 3 factors: student-teacher ratio, attendance rates. This index measures federal resource allocation — staffing levels, program availability, and support services — not standardized test scores or academic outcomes.