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#6341 of 9,539 schools in CA

Butterfield Charter

School · Porterville Unified

600 West Grand Ave., Porterville, CA 93257

Charter

Enrollment

470

Student-Teacher

24.7:1

Score

5.5

Grades

Kindergarten – 12th

Data vintage2022-23

How this school compares

California schools

#6,341 of 9,539

In Porterville

#21 of 33

public schools

In district

#16 of 21

Porterville Unified

Academic growth

9.0 / 10

Excellent

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Butterfield Charter

5.5/10

School in Porterville · grades Kindergarten – 12th. Start here, then compare fit against nearby and district options.

Porterville Military Academy

6.1/10

0.0 mi away. Use as a geographic alternative in the same move search.

Vine Street Community Day

Nearby

0.1 mi away. Use as a geographic alternative in the same move search.

About Butterfield Charter

Butterfield Charter is a public school in Porterville, CA, part of Porterville Unified. Butterfield Charter serves approximately 470 students, and covers grades Kindergarten-12th, and has a 24.7:1 student-teacher ratio. Butterfield Charter has a current MySchoolScout rating of 5.5 out of 10 and ranks #6,341 of 9,539 schools in CA.

Structured state assessment records for Butterfield Charter show 7% math proficiency (multi-year average, 2009-2024) and 18% reading/ELA proficiency (multi-year average, 2009-2024).

How it compares0.8 pts below district
  • This school 5.5 · Average
  • District avg 6.3
  • CA avg 6.3

What Parents Should Know

Test scores at Butterfield Charter sit below average, but its growth scores are strong: students here make above-average progress year over year. The raw numbers haven't caught up, but a school that keeps moving kids forward is doing the harder, more important work.

Butterfield Charter runs 24.7:1 students to teachers, above the national average. That often means bigger classes. Ask how the school supports kids who need extra help, and whether there are teaching assistants or small-group time.

Butterfield Charter is a charter school: publicly funded, but run with more independence than a traditional district school. Many charters are built around a specific model or focus, so it's worth understanding this one's mission, how enrollment works, and how it differs from the district schools nearby.

Score Breakdown

Full Profile · 4/4 metrics
Student Progress9.0Excellent25%
Year-over-year improvement in student test scores.
View breakdown
Years of Data14
Annual Change-0.27 pts/yr
Data Period2009–2024
TrendStable
Academics2.1Needs Improvement25%
Student proficiency on state tests, adjusted for community poverty levels.
View breakdown
Math Proficiency3.8% (2024 CAASPP)
Reading/ELA Proficiency17.8% (2024 CAASPP)
Math vs. State Avg-27.9 pts
Reading vs. State Avg-28.3 pts
Overall Proficiency11% (2024 CAASPP, Math+ELA)
Expected (poverty-adj.)34% (model expectation from 2024 CAASPP)
vs. Expected-23.1 pts
Adjusted Percentile5th
College Readiness7.7Very Good30%
Graduation rates, AP course participation, and IB availability.
View breakdown
4-Year Graduation Rate72%
IB ProgramNo
Resources & Environment2.1Needs Improvement20%
Student-teacher ratio, per-pupil spending, and attendance.
View breakdown
Student-Teacher Ratio24.7:1
Per-Pupil Spending$18,988
Chronic Absenteeism56.4%

Butterfield Charter — Students at Butterfield Charter score 11% proficient, which is below what's typical for similar communities (expected: 34%).

How we calculate scores →

Equity & Diversity

Shown separately, not included in overall score

Free/Reduced Lunch

71.9%

Students qualifying for federal meal assistance

Test Scores CA CAASPP (2023-24)

Math Proficiency 6.6% (multi-year average, 2009-2024)
School
State
31.8% (2024 CAASPP)
ELA Proficiency 17.9% (multi-year average, 2009-2024)
School
State
49.7% (2024 CAASPP)

Based on 32 test records from CA state assessments. About our data

Proficiency Trend

→ Stable

Average proficiency (% at or above grade level) across Math & ELA over time.

2009
Math
5%
ELA
5%
2010
Math
24.5%
ELA
24.5%
2011
Math
15%
ELA
24.5%
2012
Math
15%
ELA
17%
2013
Math
15%
ELA
5%
2014
Math
5%
ELA
24.5%
2015
Math
2.5%
ELA
2.5%
2016
Math
2.5%
ELA
17%
2017
Math
2.5%
ELA
17%
2018
Math
2.5%
ELA
37%
2019
Math
2.5%
ELA
37%
2020*
Math
2.5%
ELA
17%
2021*
Math
2.5%
ELA
17%
2024
Math
2.7%
ELA
14%

* COVID-affected year — test participation was uneven nationwide. This data is weighted at 50% in the Growth score calculation.

Source: EdFacts (NCES) and state assessment data. Growth score: 9.0/10.

How Butterfield Charter Compares

See how Butterfield Charter performs across key quality dimensions compared to state benchmarks.

Overall Score
5.5/10
34th percentile in CA
Academic
2.1/10
Needs Improvement
Growth
9.0/10
Excellent
Environment
2.1/10
Needs Improvement

Funding & Resources

Free/Reduced Lunch
Students eligible for subsidized meals
72%
Teaching Staff
25:1 student-teacher ratio
19 teachers
Chronic Absenteeism
Students missing 15+ days per year (SY 2022-23)
56.4%

Location

600 West Grand Ave., Porterville, CA 93257

Nearby Alternatives

Families considering Butterfield Charter may also want to explore other schools in the area. Sequoia Middle (rated 7.6/10, 0.5 miles away), which scores notably higher. Another option is Olive Street Elementary (rated 7.5/10, 2.1 miles away), which scores notably higher. Additionally, Monache High (rated 7.4/10, 1.0 miles away), which scores notably higher. For more schools in Porterville, see our Porterville schools guide .

Nearby Schools

20 within 2.2 mi
School Distance Rating
Porterville Military Academy Porterville 0.0 mi 6.1
Vine Street Community Day Porterville 0.1 mi
Westfield Elementary Porterville 0.3 mi 6.1
Monte Vista Elementary Porterville 0.4 mi 5.1
Sequoia Middle Porterville 0.5 mi 7.6
Sequoia Christian Academey Porterville Porterville 1.0 mi
Monache High Porterville 1.0 mi 7.4
Oak Grove Elementary Porterville 1.4 mi 5.2
Belleview Elementary Porterville 1.5 mi 4.4
Bartlett Middle Porterville 1.6 mi 6.3
West Putnam Elementary Porterville 1.7 mi 4.0
ST ANNE SCHOOL Porterville 1.6 mi 6.5
Citrus High Porterville 1.6 mi 4.2
Porterville High Porterville 1.9 mi 6.8
Olive Street Elementary Porterville 2.1 mi 7.5
Los Robles Elementary Porterville 1.9 mi 5.4
Roche Elementary Porterville 2.0 mi 6.6
William R. Buckley Elementary Porterville 2.0 mi 4.3
Burton Elementary Porterville 2.3 mi 5.0
Burton Middle Porterville 2.2 mi 7.4

Neighborhood Census ACS (2019-2023)

Census data for ZIP 93257 (ACS 2019-2023 5-Year Estimates) · Data sources

Median Income

$58,261

Median Home Value

$276,400

Median Rent

$1,086/mo

Population

79,340

College Educated

14.7%

Homeownership

55.4%

Avg Commute

24.3 min

Poverty Rate

19.6%

Median Age

30.9

Similar Schools

Schools in the same state with comparable level, size, and ratings

School Rating
Orange County Classical Academy Orange, CA 5.5
TRI-CITY CHRISTIAN SCHOOL Vista, CA 5.5
Brookfield Engineering Science Technology Academy Palm Springs, CA 5.6
Las Flores Home Education Independent Study Academy Bellflower, CA 5.4
MethodSchools Murrieta, CA 5.6
Mountain View (Alternative) Reedley, CA 5.6

Frequently Asked Questions

Common questions about Butterfield Charter

What grades does Butterfield Charter serve?

Butterfield Charter serves students in grades Kindergarten through 12th.

How many students attend Butterfield Charter?

Butterfield Charter has an enrollment of approximately 470 students.

What is the student-teacher ratio at Butterfield Charter?

The student-teacher ratio at Butterfield Charter is 24.7:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.

How does Butterfield Charter rank in CA?

Butterfield Charter ranks #6,341 of 9,539 schools in CA.

What is Butterfield Charter's MySchoolScout rating?

Butterfield Charter has a current MySchoolScout rating of 5.5 out of 10. This score combines the level-appropriate components shown in the rating breakdown; equity data is shown separately for context.

What are the test scores at Butterfield Charter?

Based on loaded state assessment records, Butterfield Charter has 7% math proficiency (multi-year average, 2009-2024) and 18% reading/ELA proficiency (multi-year average, 2009-2024).

Is Butterfield Charter a charter school?

Yes, Butterfield Charter is a charter school. Charter schools are publicly funded but independently operated, often with more flexibility in curriculum and teaching methods.

Is Butterfield Charter a Title I school?

No, Butterfield Charter is not currently a Title I school.

What does the Free & Reduced Lunch percentage mean for Butterfield Charter?

71.9% of students at Butterfield Charter qualify for free or reduced-price lunch. This is a commonly used indicator of economic need and provides important context when interpreting test scores.

11 schools nearby View map →

Neighborhood Context

Walk Score
14 Car-Dependent
Bike Score
37 Somewhat Bikeable

Powered by Walk Score

Quick Facts NCES CCD (SY 2022-23)

Grades
Kindergarten – 12th
Enrollment
470
Student-Teacher Ratio
24.7:1
Teachers (FTE)
19
Free/Reduced Lunch
71.9%
Type
regular
Setting
Small Suburb
County
Tulare County
Chronic Absenteeism (SY 2022-23)
56.4%
4-Year Graduation
72.0%

District

Porterville Unified
District Enrollment
13,963
Schools in District
22
Per-Pupil Spending
$18,988
District Rank
#16 of 21

How we rate schools

A clear 1–10 score built from public data — growth, academics, and learning environment. No hidden criteria, no pay-to-play.

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