Las Plumas High

Las Plumas High is a sprawling four-year high school in Oroville, California, one of the schools within Oroville Union High. The school educates 1,265 students in grades 9 through 12. That puts it 51% bigger than the typical public school in California, which averages around 838 students.

Oroville Union High runs 4 schools in total, collectively educating 2,230 students. Las Plumas High is one of those campuses.

On demographics, Las Plumas High shows that 54% of students identify as White, with the remaining enrollment distributed across several groups; the rest comes out to 25% Hispanic, 7% Asian, 6% multiracial, 5% Native American. The wider county runs roughly 70% White, putting the school's mix noticeably less White than the area baseline.

Looking at the economic backdrop, Staff filings list 65 full-time-equivalent teachers, which works out to roughly 19.4:1 students per teacher. The state averages around 18.2:1, so this campus is higher than the state norm typical. An estimated 75% of students are eligible for free or reduced-price lunch, a commonly cited indicator of low-income enrollment. By comparison, Butte County runs at roughly 63%, so the school's eligibility rate is above the surrounding baseline.

After controlling for student poverty, Las Plumas High sits in the middle band of the BeatsExpectations distribution. Schools with this campus's student mix typically land near 35.1%; this one delivers 31.9%.

Across the wider county, community-level numbers for Butte County indicate median household income runs about $67,928, roughly 32% of adults have completed at least a four-year degree, and roughly 12% of residents live below the federal poverty line. Across Butte County's 96 public schools (combined enrollment of about 29,730 students), Las Plumas High is one campus in the mix.

Helen M. Wilcox Elementary is the nearest neighboring public school, about 0.3 miles from this campus. Counting just inside five miles, 8 other public schools cluster around Las Plumas High. Ranking that nearby cluster on reported proficiency puts Las Plumas High at 3rd of 7; the average score across the group is 24.7%.

Geographically, the school is in a town-based area.

Five-year trend. Over the past 7-year window, the student count grew 18%: 1,075 students in 2018 compared to 1,265 in 2025. Class-load math has fell: from 22.6:1 in 2018 to 19.4:1 in 2025.

Within the allk12 community for this school, posts here usually surface around science fair prep, picture-day reminders, and bus-route questions. Contributors range from current parents to recent graduates and teachers.