Enrollment
504
California · 2024-25 NCES data
Other / mixed grade configuration · Porterville, CA
Butterfield Charter
Federal NCES profile for Butterfield Charter, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 21/100.
2024-25 NCES dataOther / mixed grade configurationNCES 060006412042Charter school
👥 S:T ratio 0
🌟 Gifted program 30
🎓 Counselors 53
📋 Attendance 0
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Butterfield Charter earns 21/100 on the Resource Investment Index, with class sizes larger than 98% of California schools.
- #5 of 5
- schools in Porterville · Resource Index
- 21
- Resource Index · Lower
- 33.6:1
- large classes for California
- 82.8%
- free-lunch eligible
Butterfield Charter has class sizes larger than 98% of California schools. Computed live against every California school reporting to NCES.
By Resource Investment Index, Butterfield Charter ranks #5 of 5 schools in Porterville, CA.
School address
District: Porterville Unified · California
NCES ID 060006412042 Verify on NCES CCD record →
Teachers (FTE)
15.0
Federal CCD staff survey
Students per teacher
33.6:1
vs 21.5:1 California avg
+56% vs state
Free-lunch eligible
82.8%
vs 55.5% California avg
+49% vs state
Student-teacher ratio in context
How Butterfield Charter compares with California and U.S. medians
What stands out at Butterfield Charter
Butterfield Charter is a high-poverty, mid-sized charter combined-grade school in Porterville, California, enrolling 504 students.
Class loads run heavy: 33.6:1 is larger than about 98% of California schools and 56% above the 21.5:1 state mean, so each teacher carries more students than is typical.
Economic need is high: 82.8% of students qualify for free meals, 49% above the California average, a Title I-weighted population that federal funding formulas prioritise.
With 504 students, its enrollment sits close to the California median campus size.
Its Resource Investment Index lands in the lower third of 9,998 scored California schools.
Against 1,999 statewide peers matched on enrollment and economic need, it ranks mid-pack at #1,318.
Its student body is led by Hispanic or Latino (76%) and White (16%) (diversity index 39/100).
Counselor coverage is strong, about 234 students per counselor, inside the American School Counselor Association's recommended 250:1.
Chronic absenteeism is elevated: 74.6% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Its district draws 20.8% of revenue from federal sources, an above-typical federal share that tends to track a higher-need student population.
Among Porterville's public schools, it stands alongside Summit Charter Academy (2,423 students): Butterfield Charter is smaller than that campus by headcount and runs heavier classes (33.6:1 vs 23.3:1).
Porterville Unified also operates Porterville High (2,125 students) and Monache High (1,855 students) alongside Butterfield Charter.
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 Butterfield Charter compares
Butterfield Charter on the metrics families compare, against California and U.S. means.
| Metric | This school | vs California | California avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 33.6:1 | ▲ 56% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 82.8% | ▲ 49% | 55.5% | 51.7% |
| Enrollment | 504 | top 45% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
33.6:1
Leaner classes than 1% of US schools, heavier class loads than most.
504
Bigger than 62% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
82.8%
free-lunch eligible
- 49% above the California average of 55.5%
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
33.6:1
students per teacher
- 56% above state mean
Top 98% in California - lower ratio than 2% of state schools
Well above 20:1, one of the more stretched staffing loads nationally relative to enrollment.
Engagement
74.6%
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
$16,026
per pupil, district-wide
- below California avg of $16,509
Close to the U.S. public-school average per-pupil spend.
Support staff
Counselors2.2 FTE
Per 234 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 76.3%
White 16.1%
American Indian / Alaska Native 3.6%
Two or More 2.4%
Asian 1.0%
Native Hawaiian / Pacific Islander 0.4%
African American 0.2%
Largest group: Hispanic or Latino at 76.3% of enrollment.
Student-body diversity index 39.0/100
Simpson diversity index - at 39.0, Butterfield Charter is less mixed than the California school average of 46.0.
Programs
Funding & spending
District-wide per-pupil expenditure for Porterville Unified, which includes Butterfield Charter.
$16,026
Per student
-3%
vs California
Avg $16,509
-3%
vs U.S.
Avg $16,593
Revenue mix
Local 12.4%
State 66.8%
Federal 20.8%
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 Butterfield Charter Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Porterville High | Larger | Similar economic need | Lower S:T ratio |
| Monache High | Larger | Lower economic need | Lower S:T ratio |
| Granite Hills High | Larger | Similar economic need | Lower S:T ratio |
| Santa Fe Elementary | Larger | Similar economic need | Lower S:T ratio |
| Pioneer Middle | Larger | Similar economic need | Lower S:T ratio |
Comparisons are relative to Butterfield Charter's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 2,125
- Students per teacher
- 25.3:1
- Resource Index
- 12/100
- Enrollment
- 1,855
- Students per teacher
- 21.1:1
- Resource Index
- 22/100
- Enrollment
- 1,206
- Students per teacher
- 21.5:1
- Resource Index
- 17/100
- Enrollment
- 809
- Students per teacher
- 23.1:1
- Resource Index
- 26/100
- Enrollment
- 754
- Students per teacher
- 20.9:1
- Resource Index
- 13/100
Similar other schools in Porterville
4 comparable other schools (grades Mixed) serving the same city.
Summit Charter Academy
Standard public school
2,423 students 23.3:1 students per teacher
Monarch River Academy
Standard public school
1,338 students 39.4:1 students per teacher
Porterville Military Academy
Standard public school
255 students 18.2:1 students per teacher
Vine Street Community Day
Alternative education program
14 students 14:1 students per teacher
Similar other schools statewide
Matched by enrollment size and by staffing ratio across all of California, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~504 students)
Next steps
Verify locally before acting on Butterfield Charter's federal record.
- Compare Butterfield Charter against another school. Compare schools
- Porterville Unified'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 Butterfield Charter
How many students attend Butterfield Charter?
Butterfield Charter has 504 students enrolled. It is a public school in Porterville, CA.
What is the student-teacher ratio at Butterfield Charter?
The student-teacher ratio at Butterfield Charter is 33.6:1, which is 56% higher than the California average of 21.5:1 and 114% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Butterfield Charter?
82.8% of students at Butterfield Charter are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of Butterfield Charter?
The largest demographic group at Butterfield Charter is Hispanic or Latino at 76.3% of enrollment, in Porterville, CA.
What is the Resource Investment Index for Butterfield Charter?
Butterfield Charter has a Resource Investment Index of 21/100 (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 Butterfield Charter rank among schools in Porterville?
By Resource Investment Index, Butterfield Charter ranks #5 of 5 schools in Porterville, CA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all schools in Porterville on the city page.
Is Butterfield Charter a good school?
Butterfield Charter earns 21/100 on the Resource Investment Index, with class sizes larger than 98% of California 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 Porterville Unified?
Besides Butterfield Charter, Porterville Unified also operates Porterville High (2,125 students), Monache High (1,855 students), and Granite Hills High (1,206 students). See the Porterville Unified 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.