Mt. Lassen Charter
Test scores
CAASPP 2023-24 . % met or exceeded standardWhat this means: On the CAASPP, California's statewide test, about 23 of every 100 students at this school read and write at grade level and about 8 of 100 do math at grade level. Across all California schools, those numbers are about 47 and 36. Reading and writing scores are down about 15 points since 2014, while math scores are down about 7 points.
BeatsExpectations
Demographically-adjusted score · methodologyWhat this means: About 15% of students here test proficient in math and reading, below the roughly 38% typical for California schools with a similar share of low-income students. BeatsExpectations compares each school with others at the same poverty level, not by raw scores, so a school lands here when its results trail those comparable schools, which is not the same as having low scores. A higher-scoring school can still fall in this tier if similar schools score higher still.
7-year change
SY 2017-18 vs SY 2024-25About Mt. Lassen Charter
Mt. Lassen Charter operates as a tiny unified-grade school in Herlong, California, overseen by Fort Sage Unified. Current enrollment sits at 154 students spanning grades K through 12. By comparison, California's public schools average about 602 students each, so Mt. Lassen Charter sits 74% smaller than that benchmark.
Fort Sage Unified runs 4 schools in total, collectively educating 269 students. Mt. Lassen Charter is one of those campuses.
Looking at the student body, Mt. Lassen Charter logs that 66% of the student body identifies as White; the rest is composed of 18% Hispanic, 12% multiracial. That mix tracks the wider county fairly closely.
On the resource side, Staff filings list 8 full-time-equivalent teachers, which works out to roughly 20.3:1 students per teacher. Statewide, the average ratio sits near 18.6:1, putting Mt. Lassen Charter higher than the state norm the norm. Roughly 70% of students at Mt. Lassen Charter qualify for free or reduced-price lunch, often used as a Title I proxy. Set against Lassen County (around 56%), the school's rate is meaningfully above typical.
After controlling for student poverty, Mt. Lassen Charter falls in the UNDERPERFORMING tier of the BeatsExpectations residual. Given its student profile, a typical campus would land near 37.7%; this one comes in at 14.7%, -23.1 points off the demographic line.
Across the wider county, census data for Lassen County shows median household earnings sit near $67,403, roughly 13% of adults have completed at least a four-year degree, and roughly 10% of residents live below the federal poverty line. In all, Lassen County runs 25 public schools (combined enrollment of about 3,757 students), of which Mt. Lassen Charter is one.
Sierra Primary is the nearest neighboring public school, about 0.1 miles from this campus. Counting just inside five miles, 3 other public schools cluster around Mt. Lassen Charter. Among the 5 schools in that immediate cluster with test data (this one included), Mt. Lassen Charter ranks 5th on composite proficiency, beneath the local average of 32.8%.
Mt. Lassen Charter operates from a small-town location. As a public charter, Mt. Lassen Charter runs on public funding but with greater curricular and operational autonomy than a typical district school.
Over the past 7-year window. Over the past 7-year window, the student count rose 41%: 109 students in 2018 compared to 154 in 2025. The student-to-teacher ratio grew from 19.0:1 in 2018 to 20.3:1 today.
On the community side, recent activity here tends to focus on enrollment questions, classroom assignments, and PTA news. Parents, students, alumni, and staff are welcome to weigh in.
Lassen County at a glance
View full county profileQuick facts
Related schools
- Sierra PrimaryElementary · 60 students
- Herlong HighHigh · 46 students
- Fort Sage MiddleMiddle · 9 students
- Sierra PrimaryElementary · 60 students
- Herlong HighHigh · 46 students
- Fort Sage MiddleMiddle · 9 students
- Sierra Primary0.1 mi · 60
- Fort Sage Middle0.4 mi · 9
- Herlong High0.4 mi · 46
- Long Valley6.6 mi · 250
- Shaffer Elementary21.1 mi · 246
- Janesville Elementary23.7 mi · 313