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Email BoardAlpha: Cornerstone Academy Preparatory
1598 Lucretia Avenue, San Jose, CA 95122-3817
Summary
Reading and math results average to the 86th percentile among comparable California schools.
64.5% of students met California's reading standard, and it is slowly trending up.
54.3% of students met California's math standard, but it is trending up slightly.
Proficiency stats
| Current Reading Proficiency | 64.5% |
| Current Math Proficiency | 54.3% |
| Reading State Rank | 247/1,734 (86th percentile) |
| Math State Rank | 230/1,735 (87th percentile) |
School information
| Student / Teacher Ratio | 23:1 |
| Student enrollment (2024–25) | 554 |
| Low-Income Students | 326 (59.2%) |
| English Learners | 144 (26.1%) |
Quick links
School Website
Great Schools
Niche
CAASPP| Admissions | Open enrollment |
|---|---|
| Charter school | Yes |
| Magnet school | No |
Test score trends
Reading rose 3.9 points from last year and rose 3.1 points over the full period. Math rose 2.7 points from last year and rose 1.6 points over the full period.
•Math +1.6 percentage points (2024–2026)Reading Proficiency Scores
2026 state test results
Race and Ethnicity
Asian and Filipino students have the strongest results.
Distribution of Scores by Grade
The share meeting the reading standard ranges from 46.5% to 71.4% across the grades shown. Overall, the school’s reading results rank in the top 15% among California schools in the same grade-level category.
Low-Income vs Non-Low-Income
The 24.6-point reading income gap is wider than the 16.5-point gap at a typical California K–8 school. It widened over the period shown.
•English Learners vs English Native
12.7% of English learners meet the reading standard, compared with 65.3% of English-only students. The gap narrowed as English-learner results rose and English-only results rose.
•Math Proficiency Scores
2026 state test results
Race and Ethnicity
Asian students have the strongest math results at about 76% proficiency. The other reported groups range from about 22% to 41%.
Distribution of Scores by Grade
The share meeting the math standard ranges from 42.4% to 64.5% across the grades shown. Overall, the school’s math results rank in the top 14% among California schools in the same grade-level category.
Low-Income vs Non-Low-Income
The 25.0-point math income gap is wider than the 15.5-point gap at a typical California K–8 school. It widened over the period shown.
•English Learners vs English Native
16.4% of English learners meet the math standard, compared with 54.0% of English-only students. The gap narrowed 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 802 schools for reading and 801 for math. The comparison uses 2026 California K–8 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 Alpha: Cornerstone Academy Preparatory compare within the district?
Alpha: Cornerstone Academy Preparatory is No. 2 in reading and No. 3 in math proficiency among the 7 K–8 schools in Santa Clara County Office of Education with 2026 results.
Explore the district’s schoolsHow does Alpha: Cornerstone Academy Preparatory rank in California?
Alpha: Cornerstone Academy Preparatory ranks No. 247 of 1,734 in reading and No. 230 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 Alpha: Cornerstone Academy Preparatory compare within the district?
Low-income students here rank No. 2 in both subjects among 7 K–8 district schools with reportable 2026 results for this group. 55.6% meet the reading standard and 45.3% meet the math standard.
See results by student groupHow does Alpha: Cornerstone Academy Preparatory compare with other schools in San Jose?
Alpha: Cornerstone Academy Preparatory is No. 4 in both reading and math proficiency among the 24 K–8 schools in San Jose with 2026 results.
Explore schools in San JoseWhich schools should I compare?
Schools serving K–8 in the same district.
| School | Math | Reading |
|---|---|---|
| Alpha: Cornerstone Academy PreparatoryThis school | 54.3% | 64.5% |
| Alpha: Jose Hernandez | 11.7% | 16.2% |
| Discovery Charter | 64.1% | 63.9% |
