Plumas Avenue Elementary

Plumas Avenue Elementary is one of the low-enrollment elementary schools in Oroville, California, one of the schools within Thermalito Union Elementary, with 322 students on its rolls from grades K through 5. Enrollment runs roughly 31% smaller than the state mean of about 465.

Thermalito Union Elementary comprises 6 schools with combined enrollment of 1,515 students; Plumas Avenue Elementary is among them.

In terms of who attends, Plumas Avenue Elementary reports that the most-represented group is White (37%), with the rest of the student body spread across multiple groups. The remainder reads as 31% Asian, 18% Hispanic, 9% multiracial, 2% Black. By comparison, Butte County as a whole is about 70% White, so the school skews noticeably less White than its surroundings.

On the resource side, On paper, Plumas Avenue Elementary has 13 full-time-equivalent teachers, translating to a class-load average of around 24.8:1. Statewide, the average ratio sits near 22.3:1, putting Plumas Avenue Elementary higher than the state norm the norm. An estimated 87% of students are eligible for free or reduced-price lunch, which schools and policymakers use as a rough income-mix signal. By comparison, Butte County runs at roughly 63%, so the school's eligibility rate is above the surrounding baseline.

On a residual basis (actual vs predicted given the student mix), Plumas Avenue Elementary sits in the middle band of the BeatsExpectations distribution. Schools with this campus's student mix typically land near 27.7%; this one delivers 28.7%.

In the broader community, census data for Butte County shows median household income runs about $67,928, roughly 32% of adults have completed at least a four-year degree, and census figures put the poverty rate at about 12%. In all, Butte County runs 96 public schools (combined enrollment of about 29,730 students), of which Plumas Avenue Elementary is one.

The closest other public school is Oroville High Community Day, roughly 0.4 miles away. Within five miles, there are 8 other public schools. Ranking that nearby cluster on reported proficiency puts Plumas Avenue Elementary at 1st of 4; the average score across the group is 21.1%.

The school occupies a town-based site.

Five-year trend. Over the past 7-year window, the student count stayed largely flat: 322 students in 2018 compared to 322 in 2025. Asian enrollment moved from 22% to 31% across the same window.

On this page, the feed for Plumas Avenue Elementary typically covers classroom updates, athletics, and weather closures. The community welcomes input from current and former families.