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Email BoardGranite Mountain Charter
8560 Aliento Road, Lucerne Valley, CA 92356-8133
Summary
Granite Mountain Charter is underperforming.
Reading and math results average to the 56th percentile among comparable California schools.
Only 46.6% of students met California's reading standard, but it is slowly trending up.
Math is weaker: 31.9% of students met California's math standard, but it is slowly trending up.
Proficiency stats
| Current Reading Proficiency | 46.6% |
| Current Math Proficiency | 31.9% |
| Reading State Rank | 734/1,734 (58th percentile) |
| Math State Rank | 809/1,735 (53rd percentile) |
School information
| Student / Teacher Ratio | 27:1 |
| Student enrollment (2024–25) | 4,393 |
| Low-Income Students | 1,752 (39.9%) |
| English Learners | 48 (1.1%) |
School Website
Great Schools
Niche
Ed-Data
CAASPP| Admissions | Open enrollment |
|---|---|
| Charter school | Yes |
| Magnet school | No |
Test score trends
Reading fell 0.2 points from last year and rose 4.1 points over the full period. Math rose 0.8 points from last year and rose 4.1 points over the full period.
•Math +4.1 percentage points (2024–2026)Reading Proficiency Scores
2026 state test results
Race and Ethnicity
Filipino and Asian students have the strongest results.
Distribution of Scores by Grade
The share meeting the reading standard ranges from 39.4% to 68.8% across the grades shown. Overall, the school’s reading results rank in the top 43% among California schools in the same grade-level category.
Low-Income vs Non-Low-Income
The 12.0-point reading income gap is about the same as the 11.6-point gap at a typical California K–12 school. It widened slightly over the period shown.
•English Learners vs English Native
4.3% of English learners meet the reading standard, compared with 46.4% of English-only students. The gap widened as English-learner results fell and English-only results rose.
•Math Proficiency Scores
2026 state test results
Race and Ethnicity
Filipino students have the strongest math results at about 74% proficiency. The other reported groups range from about 24% to 55%.
Distribution of Scores by Grade
The share meeting the math standard ranges from 25.4% to 43.5% across the grades shown. Overall, the school’s math results rank in the top 47% among California schools in the same grade-level category.
Low-Income vs Non-Low-Income
The 10.1-point math income gap is narrower than the 10.8-point gap at a typical California K–12 school. It widened slightly over the period shown.
•English Learners vs English Native
17.4% of English learners meet the math standard, compared with 32.0% of English-only students. The gap widened as English-learner results rose and English-only results rose.
•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 Granite Mountain Charter compare within the district?
Granite Mountain Charter is No. 4 in reading and No. 5 in math proficiency among the 5 K–12 schools in Lucerne Valley Unified with 2026 results.
Explore the district’s schoolsHow does Granite Mountain Charter rank in California?
Granite Mountain Charter ranks No. 734 of 1,734 in reading and No. 809 of 1,735 in math for 2026. These proficiency rankings compare California schools in the same grade-level category.
How do low-income students at Granite Mountain Charter compare within the district?
Low-income students here rank No. 5 in both subjects among 5 K–12 district schools with reportable 2026 results for this group. 39.9% meet the reading standard and 26.3% meet the math standard.
See results by student groupHow does Granite Mountain Charter compare with other schools in Lucerne Valley?
Granite Mountain Charter is No. 1 in reading and No. 2 in math proficiency among the 2 K–12 schools in Lucerne Valley with 2026 results.
Explore schools in Lucerne ValleyHow does Granite Mountain Charter compare with other schools in San Bernardino County?
Granite Mountain Charter is No. 9 in reading and No. 10 in math proficiency among the 24 K–12 schools in San Bernardino County with 2026 results.
Explore schools in San Bernardino CountyWhich schools should I compare?
Schools serving K–12 in the same district.
| School | Math | Reading |
|---|---|---|
| Granite Mountain CharterThis school | 31.9% | 46.6% |
| Southern California Flex Academy | 36.3% | 41.9% |
| Elite Academic Academy - Lucerne | 49.5% | 55.8% |
