Enrollment
390
Arizona · 2024-25 NCES data
High school (grades 9-12) · Phoenix, AZ
Phoenix Union Bioscience High School
Federal NCES profile for Phoenix Union Bioscience High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 40/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 040633002670
👥 S:T ratio 29
📚 AP courses 10
🌟 Gifted program 70
🎓 Counselors 22
📋 Attendance 69
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Phoenix Union Bioscience High School earns 40/100 on the Resource Investment Index, with class sizes near the Arizona median.
- #16 of 65
- high schools in Phoenix · Resource Index
- 40
- Resource Index · Typical
- 17.7:1
- students per teacher
- 50.0%
- free-lunch eligible
Phoenix Union Bioscience High School has class sizes near the Arizona median. Computed live against every Arizona school reporting to NCES.
By Resource Investment Index, Phoenix Union Bioscience High School ranks #16 of 65 high schools in Phoenix, AZ.
School address
District: Phoenix Union High School District (4286) · Arizona
NCES ID 040633002670 Verify on NCES CCD record →
Teachers (FTE)
22.0
Federal CCD staff survey
Students per teacher
17.7:1
vs 17:1 Arizona avg
+4% vs state
Free-lunch eligible
50.0%
vs 48.3% Arizona avg
+4% vs state
Student-teacher ratio in context
How Phoenix Union Bioscience High School compares with Arizona and U.S. medians
What stands out at Phoenix Union Bioscience High School
Phoenix Union Bioscience High School is a higher-need, mid-sized high school in Phoenix, Arizona, enrolling 390 students.
Class loads run somewhat heavier than typical: 17.7:1 puts it in the larger third of Arizona schools by student-teacher ratio.
Its free-meal eligibility rate of 50.0% lands close to the Arizona typical range, neither a high- nor low-need campus by this measure.
With 390 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.
Among 272 similarly sized, similarly resourced-need Arizona schools statewide, it ranks #14, a top-tier result once campus size and economic need are matched.
Its student body is led by Hispanic or Latino (69%) and White (13%) (diversity index 49/100).
On the academic-pipeline side it reports 2 Advanced Placement courses.
Counselor availability sits well past the ASCA benchmark, roughly 390 students sharing each counselor, though short of the most stretched campuses.
12.3% of students were chronically absent in the 2021-22 collection, in line with the post-pandemic national range.
Its district draws 18.0% of revenue from federal sources, an above-typical federal share that tends to track a higher-need student population.
Among Phoenix's high schools, it stands alongside Madison Highland Prep (510 students): Phoenix Union Bioscience High School is smaller than that campus by headcount.
Phoenix Union High School District (4286) also operates Trevor Browne High School (2,850 students) and Cesar Chavez High School (2,598 students) alongside Phoenix Union Bioscience High School.
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 Phoenix Union Bioscience High School compares
Phoenix Union Bioscience 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 | 17.7:1 | ▲ 4% | 17:1 | 15.7:1 |
| Free-lunch eligible | 50.0% | ▲ 4% | 48.3% | 51.7% |
| Enrollment | 390 | top 53% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
17.7:1
Leaner classes than 26% of US schools, heavier class loads than most.
390
Bigger than 46% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
50.0%
free-lunch eligible
- 4% 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
17.7:1
students per teacher
- 4% above state mean
Top 61% in Arizona - lower ratio than 39% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Engagement
12.3%
chronically absent (missed 10%+ of school days)
In the 10-15% range, above the pre-pandemic national baseline but within the broader post-pandemic picture.
Funding equity
$11,816
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 390 students, the combined health-and-guidance staffing load for this school.
Discipline context
0
in-school suspensions + 0 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 0.0 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 69.2%
White 13.3%
Asian 9.0%
African American 5.6%
Two or More 2.6%
American Indian / Alaska Native 0.3%
Largest group: Hispanic or Latino at 69.2% of enrollment.
Student-body diversity index 49.2/100
Simpson diversity index - at 49.2, Phoenix Union Bioscience High School is more mixed than the Arizona school average of 47.2.
Programs
AP courses offered 2
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Phoenix Union High School District (4286), which includes Phoenix Union Bioscience High School.
$11,816
Per student
-10%
vs Arizona
Avg $13,145
-29%
vs U.S.
Avg $16,593
Revenue mix
Local 57.9%
State 24.1%
Federal 18.0%
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 Phoenix Union Bioscience High School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Trevor Browne High School | Larger | Higher economic need | Higher S:T ratio |
| Cesar Chavez High School | Larger | Similar economic need | Higher S:T ratio |
| Maryvale High School | Larger | Higher economic need | Similar S:T ratio |
| South Mountain High School | Larger | Higher economic need | Higher S:T ratio |
| Alhambra High School | Larger | Higher economic need | Similar S:T ratio |
Comparisons are relative to Phoenix Union Bioscience High School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 2,850
- Students per teacher
- 19.5:1
- Resource Index
- 45/100
- Enrollment
- 2,598
- Students per teacher
- 20.6:1
- Resource Index
- 41/100
- Enrollment
- 2,532
- Students per teacher
- 18.3:1
- Resource Index
- 47/100
- Enrollment
- 2,207
- Students per teacher
- 19.9:1
- Resource Index
- 42/100
- Enrollment
- 2,169
- Students per teacher
- 17.4:1
- Resource Index
- 46/100
Similar high schools in Phoenix
6 comparable high schools (grades 9-12) serving the same city.
Madison Highland Prep
Standard public school
510 students
Arizona Preparatory Academy
Alternative education program
233 students
Ombudsman - Charter West
Alternative education program
176 students
Skyline Prep High School
Alternative education program
167 students
Intelli-School - Paradise Valley
Alternative education program
63 students
Think Through Academy
Standard public school
61 students
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 (~390 students)
Similar student-teacher ratio (~17.7:1)
Next steps
Verify locally before acting on Phoenix Union Bioscience High School's federal record.
- Compare Phoenix Union Bioscience High School against another school. Compare schools
- Phoenix Union High School District (4286)'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 Phoenix Union Bioscience High School
How many students attend Phoenix Union Bioscience High School?
Phoenix Union Bioscience High School has 390 students enrolled. It is a high school in Phoenix, AZ.
What is the student-teacher ratio at Phoenix Union Bioscience High School?
The student-teacher ratio at Phoenix Union Bioscience High School is 17.7:1, which is 4% higher than the Arizona average of 17:1 and 13% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Phoenix Union Bioscience High School?
50.0% of students at Phoenix Union Bioscience High School are eligible for free lunch, compared to the Arizona average of 48.3%.
What is the racial and ethnic makeup of Phoenix Union Bioscience High School?
The largest demographic group at Phoenix Union Bioscience High School is Hispanic or Latino at 69.2% of enrollment, in Phoenix, AZ.
What is the Resource Investment Index for Phoenix Union Bioscience High School?
Phoenix Union Bioscience High School has a Resource Investment Index of 40/100 (typical reported resources relative to schools nationally) based on 5 factors: student-teacher ratio, AP course offerings, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Phoenix Union Bioscience High School rank among high schools in Phoenix?
By Resource Investment Index, Phoenix Union Bioscience High School ranks #16 of 65 high schools in Phoenix, AZ. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all high schools in Phoenix on the city page.
Is Phoenix Union Bioscience High School a good school?
Phoenix Union Bioscience High School earns 40/100 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 Phoenix Union High School District (4286)?
Besides Phoenix Union Bioscience High School, Phoenix Union High School District (4286) also operates Trevor Browne High School (2,850 students), Cesar Chavez High School (2,598 students), and Maryvale High School (2,532 students). See the Phoenix Union High School District (4286) 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.