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Mt. Lassen Charter

Public, Charter, Alternative Grades K-12
5831st
SchoolDigger Rank ?
of 5,857 California Alternative Schools
Better than 0% of California alternative schools
Summary

Mt. Lassen Charter is a small, K-12 alternative public school serving 154 students in the rural community of Herlong, CA, within the Fort Sage Unified School District.

This school demonstrates a notable strength in supporting students to stay in school and graduate, achieving a perfect 100% graduation rate and an exceptionally low chronic absenteeism rate of just 2.1% for the 2024-2025 year, significantly outperforming both the district and state averages. These metrics show dramatic improvement from previous years and suggest a highly effective approach to student engagement and retention, especially given that over 70% of students are economically disadvantaged. However, the school faces significant academic challenges, with proficiency rates in English, math, and science well below state averages; mathematics is a particular area of concern, with some grades showing 0% proficiency.

When compared to the nearby alternative school, Long Valley in the Long Valley District, a clear contrast emerges: Mt. Lassen Charter excels in graduation and attendance but struggles academically, while Long Valley shows stronger academic performance but has lower graduation rates. Despite a recent substantial increase in per-student spending at Mt. Lassen Charter, these resources have not yet translated into higher test scores, highlighting an area for potential focus and growth.

154
Students ?
20.2
Student/teacher ratio ?
$22,831
Per pupil spending ?
70.1%
Free/discounted lunch ?
 100 David S Hall St.
       Herlong, CA  96113

(530) 827-2129

District: Fort Sage Unified

Racial breakdown:

White:
65.6%
Hispanic:
17.5%
Two or more races:
12.3%
more
 See top rated California elementary schools

 Compare Mt. Lassen Charter to nearby alternative schools!
At a glance
▲ Ranking trend: Rebounding — <1st percentile in 2025 → 30th in 2025
Strengths
✓100% graduate in 4 years — above the California average (88%)
✓Ranking is rebounding — up to 30th (2025) from a <1st-percentile low (2025)
Worth a look
!Test scores below the California average (11% vs 41% meeting standards)
!In the lower quartile statewide (<1st percentile)
!Mathematics scores 35 pts below the California average
Students meeting standards (2024-2025) ?
This school11%
District avg9%
California avg41%
Elementary school
5,831st of 5,857
California public elementary schools ?
Bottom 1%▼ down 36 pts since 2021
From bottom 36% (2021) to bottom 1% (2025)
See the entire ranking list of California Elementary Schools →
★★★★★
SchoolDigger rating ?
High school
1,509th of 2,162
California public high schools ?
Bottom 30%▼ down 18 pts since 2015
From bottom 49% (2015) to bottom 30% (2025)
See the entire ranking list of California High Schools →
★★★★★
SchoolDigger rating ?
Statewide rank percentile over time (100 = the top-ranked school in the state; click a legend item to add a student group)
Elementary school ranking
Show full rank history (all student groups)

All Students

YearAvg scoreStatewide rankCalifornia percentileRating
20255.35831 of 58570.4%☆☆☆☆☆
20246.45826 of 58690.7%☆☆☆☆☆
202318.44994 of 585914.8%★☆☆☆☆
202132.4906 of 141736.1%★★☆☆☆
Middle school ranking
Show full rank history (all student groups)

All Students

YearAvg scoreStatewide rankCalifornia percentileRating
202414.32502 of 278310.1%★☆☆☆☆
202226.21939 of 274029.2%★☆☆☆☆
202142.0480 of 89446.3%★★☆☆☆
201925.11988 of 271526.8%★☆☆☆☆
201830.51648 of 248033.5%★★☆☆☆
201735.01536 of 250838.8%★★☆☆☆
201619.22052 of 249717.8%★☆☆☆☆
201529.01660 of 247733.0%★★☆☆☆
201356.7980 of 237958.8%★★★☆☆

Female

YearAvg scoreStatewide rankCalifornia percentileRating
202416.42248 of 255111.9%★☆☆☆☆

Low Socio Economic Status

YearAvg scoreStatewide rankCalifornia percentileRating
202231.61640 of 245833.3%★★☆☆☆

White

YearAvg scoreStatewide rankCalifornia percentileRating
20245.71483 of 15373.5%☆☆☆☆☆
High school ranking
Show full rank history (all student groups)

All Students

YearAvg scoreStatewide rankCalifornia percentileRating
202528.71509 of 216230.2%★★☆☆☆
202449.01025 of 215952.5%★★★☆☆
202337.01301 of 217040.0%★★☆☆☆
202127.0949 of 129026.4%★☆☆☆☆
201844.81121 of 201744.4%★★☆☆☆
201739.91241 of 202138.6%★★☆☆☆
201641.21179 of 203942.2%★★☆☆☆
201547.71025 of 199448.6%★★☆☆☆
201361.5501 of 242679.3%★★★★☆
20124.92139 of 23549.1%☆☆☆☆☆
201175.1208 of 236791.2%★★★★★
How student groups rank statewide ? (each group's percentile vs the same group at other schools — higher is better; the +/- beside each compares the group with this school's overall percentile)
Middle school
Low Socio Economic Status (2022)33rd percentile+4 vs school
Female (2024)12th percentile~ school
White (2024)4th percentile-7 vs school
By subject vs California (2024-2025) ?
English Language Arts/Literacy17%-32 vs state
Science16%-16 vs state
Mathematics3%-35 vs state

★
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Frequently Asked Questions about Mt. Lassen Charter

Mt. Lassen Charter ranks in the bottom 0.4% of California alternative schools.

In the 2024-25 school year, 154 students attended Mt. Lassen Charter.

Students at Mt. Lassen Charter are 66% White, 18% Hispanic, 12% Two or more races, 2% Not Specified, 1% African American, 1% American Indian.


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CACalifornia Alternative School Rankings

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Schools in Herlong, CA

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Latest California data All new data »
2024–25 school spending dataJul 1, 2026
2024–25 attendance dataMar 13, 2026
2024–25 CSA Spanish test scoresDec 22, 2025
2024–25 dropout rates & graduation ratesNov 14, 2025


SchoolDigger data sources: National Center for Education Statistics, U.S. Department of Education, the U.S. Census Bureau and the California Department of Education.

IMPORTANT DISCLAIMERS: Not all boundaries are included. We make every effort to ensure that boundaries are up-to-date. But it's important to note that these are approximations and are for general informational purposes only. To verify legal descriptions of boundaries or school locations, contact your local tax assessor's office and/or school district.




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