Butterfield Charter

Butterfield Charter is one of the modestly sized all-grades campuss in Porterville, California, run under Porterville Unified, with 504 students on its rolls from grades K through 12.

Butterfield Charter is one of 22 schools operated by Porterville Unified, a district that works with 13,893 students overall.

In terms of who attends, Butterfield Charter logs that Hispanic students make up the majority at 76%. The remainder comes out to 16% White, 4% Native American, 2% multiracial. That is visibly more Hispanic than the county at large, where the share is closer to 67%.

Looking at the economic backdrop, Butterfield Charter shows 24 full-time-equivalent teachers, putting the student-to-teacher ratio at about 20.6:1. That figure is higher than the state norm's 18.6:1 average. About 94% of enrolled students meet the income threshold for free or reduced-price lunch, a commonly cited indicator of low-income enrollment. That share is higher than Tulare County's rate of about 77%.

Adjusting for the school's free-and-reduced-lunch share, On a poverty-adjusted basis, Butterfield Charter sits in the bottom 10% statewide. Predicted proficiency from the FRL regression is roughly 23.5%; actual is 8.4%, a gap of -15.1 points.

Around the school, census data for Tulare County shows median household earnings sit near $71,300, roughly 17% of adults have completed at least a four-year degree, and the poverty rate sits near 15%. Butterfield Charter is one of 196 public schools in Tulare County (combined enrollment of about 101,494 students).

The closest other public school is Porterville Military Academy, roughly 0.0 miles away. Counting just inside five miles, 8 other public schools cluster around Butterfield Charter. Among the 8 schools in that immediate cluster with test data (this one included), Butterfield Charter ranks 8th on composite proficiency, behind the local average of 32.7%.

The school occupies an outer-ring site. Butterfield Charter operates as a public charter school, meaning it is publicly funded but governed independently of the surrounding district's traditional schools.

Over the past 7-year window. Butterfield Charter's enrollment has grew 39% since 2018, when it stood at 362 (now 504). Over the same period, the Hispanic share grew from 70% to 76%. Class-load math has narrowed: from 45.6:1 in 2018 to 20.6:1 in 2025.

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