Thompson Peak Charter
995 Paiute Lane, Susanville, CA 96130-4327
Summary
Thompson Peak Charter is badly underperforming.
Reading and math results average to the 28th percentile among comparable California schools.
Only 38.5% of students met California's reading standard, but it is trending up.
Math is weaker: 7.3% of students met California's math standard, and it is slowly trending down.
Proficiency stats
| Current Reading Proficiency | 38.5% |
| Current Math Proficiency | 7.3% |
| Reading State Rank | 864/1,734 (50th percentile) |
| Math State Rank | 1,618/1,735 (7th percentile) |
School information
| Student / Teacher Ratio | 16:1 |
| Student enrollment (2024–25) | 151 |
| Low-Income Students | 95 (62.9%) |
| English Learners | 1 (0.7%) |
School Website
Great Schools
Niche
Ed-Data
CAASPP| Admissions | Open enrollment |
|---|---|
| Charter school | Yes |
| Magnet school | No |
Test score trends
Reading rose 1.3 points from last year and rose 8.5 points over the full period. Math fell 4.3 points from last year and fell 3.8 points over the full period.
•Math -3.8 percentage points (2024–2026)Reading Proficiency Scores
2026 state test results
Race and Ethnicity
White and Two or more races students have the strongest results.
Distribution of Scores by Grade
The share meeting the reading standard ranges from 28.0% to 52.4% across the grades shown. Overall, the school’s reading results rank in the top 50% among California schools in the same grade-level category.
Low-Income vs Non-Low-Income
Low-income students are 0.1 points ahead in reading. It narrowed over the period shown.
•English Learners vs English Native
Results for both language groups are unavailable, so a current reading gap cannot be calculated.
Math Proficiency Scores
2026 state test results
Race and Ethnicity
Two or more races students have the strongest math results at about 9% proficiency. The other reported groups range from about 6% to 8%.
Distribution of Scores by Grade
The share meeting the math standard ranges from 0.0% to 12.0% across the grades shown. Overall, the school’s math results rank No. 1,618 of 1,735 among California schools in the same grade-level category.
Low-Income vs Non-Low-Income
The 5.0-point math income gap is narrower than the 10.8-point gap at a typical California K–12 school. It narrowed over the period shown.
•English Learners vs English Native
Results for both language groups are unavailable, so a current math gap cannot be calculated.
Progress as students move up
2023–2026
How we compare income gaps
“Typical” means the median gap across 249 schools for reading and 251 for math. The comparison uses 2026 California K–12 schools with at least 20 tested students in each income group and a reported low-income student population. Each school counts once. Its gap is non-low-income proficiency minus low-income proficiency, including negative gaps. California state test data
Understanding this school
How does Thompson Peak Charter rank in California?
Thompson Peak Charter ranks No. 864 of 1,734 in reading and No. 1,618 of 1,735 in math for 2026. These proficiency rankings compare California schools in the same grade-level category.
How does Thompson Peak Charter compare with other schools in Lassen County?
Thompson Peak Charter is No. 1 in reading and No. 2 in math proficiency among the 3 K–12 schools in Lassen County with 2026 results.
Explore schools in Lassen County