Enrollment
474
Arizona · 2024-25 NCES data
Middle school (grades 6-8) · Phoenix, AZ
Isaac Middle School
Federal NCES profile for Isaac Middle School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 19/100.
2024-25 NCES dataMiddle school (grades 6-8)NCES 040396000315
👥 S:T ratio 41
🌟 Gifted program 30
🎓 Counselors 5
📋 Attendance 0
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Isaac Middle School earns 19/100 on the Resource Investment Index, with class sizes near the Arizona median. It is also less racially and ethnically mixed than most Arizona schools.
- #19 of 24
- middle schools in Phoenix · Resource Index
- 19
- Resource Index · Lower
- 14.8:1
- students per teacher
- 78.9%
- free-lunch eligible
Isaac Middle School has class sizes near the Arizona median. Computed live against every Arizona school reporting to NCES.
By Resource Investment Index, Isaac Middle School ranks #19 of 24 middle schools in Phoenix, AZ.
School address
District: Isaac Elementary District (4259) · Arizona
NCES ID 040396000315 Verify on NCES CCD record →
Teachers (FTE)
32.0
Federal CCD staff survey
Students per teacher
14.8:1
vs 17:1 Arizona avg
-13% vs state
Free-lunch eligible
78.9%
vs 48.3% Arizona avg
+63% vs state
Student-teacher ratio in context
How Isaac Middle School compares with Arizona and U.S. medians
What stands out at Isaac Middle School
Isaac Middle School is a high-poverty, mid-sized middle school in Phoenix, Arizona, enrolling 474 students.
Class sizes run a bit leaner than typical: 14.8:1 puts it in the smaller third of Arizona schools by student-teacher ratio.
Economic need is high: 78.9% of students qualify for free meals, 63% above the Arizona average, a Title I-weighted population that federal funding formulas prioritise.
With 474 students, its enrollment sits close to the Arizona median campus size.
Its Resource Investment Index lands in the lower third of 2,064 scored Arizona schools.
Among 249 similarly sized, similarly resourced-need Arizona schools statewide, it ranks #203, in the lower tier once campus size and economic need are matched.
Its student body is predominantly Hispanic or Latino (95% of enrollment), among the less diverse in the state (diversity index 9/100).
Counselor access is stretched at roughly 474 students per counselor, well above the ASCA-recommended 250:1 ceiling.
Chronic absenteeism is elevated: 80.6% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Its district draws 19.2% of revenue from federal sources, an above-typical federal share that tends to track a higher-need student population.
Discipline events run high: 173 in- and out-of-school suspensions were reported for 474 students in the 2021-22 Civil Rights Data Collection.
Among Phoenix's middle schools, it stands alongside Sonoran Trails Middle School (615 students): Isaac Middle School is smaller than that campus by headcount and runs leaner classes (14.8:1 vs 17.6:1).
Isaac Elementary District (4259) also operates Pueblo Del Sol Middle School (659 students) and Morris K. Udall Escuela De Bellas Artes (553 students) alongside Isaac Middle 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 Isaac Middle School compares
Isaac Middle 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 | 14.8:1 | ▼ 13% | 17:1 | 15.7:1 |
| Free-lunch eligible | 78.9% | ▲ 63% | 48.3% | 51.7% |
| Enrollment | 474 | top 42% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
14.8:1
Leaner classes than 49% of US schools, a middle-of-the-pack class size.
474
Bigger than 58% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
78.9%
free-lunch eligible
- 63% above the Arizona average of 48.3%
Well above the 40% Title I schoolwide threshold, among the highest-need profiles in the state; federal funds support the whole school, not individual students.
Staffing depth
14.8:1
students per teacher
- 13% below state mean
Top 34% in Arizona - lower ratio than 66% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
80.6%
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
$13,884
per pupil, district-wide
- above Arizona avg of $13,145
Somewhat below the U.S. average per-pupil spend; funding constraints may affect programs, facilities, and staffing.
Support staff
Counselors1.0 FTE
Per 474 students, the combined health-and-guidance staffing load for this school.
Discipline context
59
in-school suspensions + 114 out-of-school
Suspension rate: 12.4 per 100 students. Combined in-school and out-of-school rate: 36.5 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 95.1%
African American 3.2%
White 0.8%
Asian 0.4%
American Indian / Alaska Native 0.2%
Two or More 0.2%
Largest group: Hispanic or Latino at 95.1% of enrollment.
Student-body diversity index 9.4/100
Simpson diversity index - at 9.4, Isaac Middle School is less mixed than the Arizona school average of 47.2.
Programs
Funding & spending
District-wide per-pupil expenditure for Isaac Elementary District (4259), which includes Isaac Middle School.
$13,884
Per student
+6%
vs Arizona
Avg $13,145
-16%
vs U.S.
Avg $16,593
Revenue mix
Local 28.1%
State 52.7%
Federal 19.2%
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 Isaac Middle School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Pueblo Del Sol Middle School | Larger | Similar economic need | Similar S:T ratio |
| Morris K. Udall Escuela De Bellas Artes | Similar size | Similar economic need | Higher S:T ratio |
| Alta E Butler School | Similar size | Similar economic need | Similar S:T ratio |
| J B Sutton Elementary School | Similar size | Similar economic need | Similar S:T ratio |
| Mitchell Elementary School | Similar size | Lower economic need | Higher S:T ratio |
Comparisons are relative to Isaac Middle School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 659
- Students per teacher
- 15.3:1
- Resource Index
- 20/100
- Enrollment
- 553
- Students per teacher
- 18.4:1
- Resource Index
- 14/100
- Enrollment
- 541
- Students per teacher
- 15.9:1
- Resource Index
- 17/100
- Enrollment
- 522
- Students per teacher
- 15.8:1
- Resource Index
- 17/100
- Enrollment
- 414
- Students per teacher
- 16.6:1
- Resource Index
- 16/100
Similar middle schools in Phoenix
3 comparable middle schools (grades 6-8) serving the same city.
Similar middle 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 (~474 students)
Similar student-teacher ratio (~14.8:1)
Next steps
Verify locally before acting on Isaac Middle School's federal record.
- Compare Isaac Middle School against another school. Compare schools
- Isaac Elementary District (4259)'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 Isaac Middle School
How many students attend Isaac Middle School?
Isaac Middle School has 474 students enrolled. It is a middle school in Phoenix, AZ.
What is the student-teacher ratio at Isaac Middle School?
The student-teacher ratio at Isaac Middle School is 14.8:1, which is 13% lower than the Arizona average of 17:1 and 6% 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 Isaac Middle School?
78.9% of students at Isaac Middle School are eligible for free lunch, compared to the Arizona average of 48.3%.
What is the racial and ethnic makeup of Isaac Middle School?
The largest demographic group at Isaac Middle School is Hispanic or Latino at 95.1% of enrollment, in Phoenix, AZ.
What is the Resource Investment Index for Isaac Middle School?
Isaac Middle School has a Resource Investment Index of 19/100 (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 Isaac Middle School rank among middle schools in Phoenix?
By Resource Investment Index, Isaac Middle School ranks #19 of 24 middle 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 middle schools in Phoenix on the city page.
Is Isaac Middle School a good school?
Isaac Middle School earns 19/100 on the Resource Investment Index, with class sizes near the Arizona median. It is also less racially and ethnically mixed than most 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 Isaac Elementary District (4259)?
Besides Isaac Middle School, Isaac Elementary District (4259) also operates Pueblo Del Sol Middle School (659 students), Morris K. Udall Escuela De Bellas Artes (553 students), and Alta E Butler School (541 students). See the Isaac Elementary District (4259) 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.