Alpha: Cornerstone Academy Preparatory
🇺🇸 Official data · 2025San Jose, California 95122 · Alpha: Cornerstone Academy Preparatory District
#862 of 5,693 elementary schools in California
#11847 of 50,301 nationally
About Alpha: Cornerstone Academy Preparatory
Alpha: Cornerstone Academy Preparatory is a charter elementary located in San Jose, in the Alpha: Cornerstone Academy Preparatory District school district of California, United States. It caters for Grades K–8. In 2025 it enrolled 554 students. Publicly funded charter schools operating under a performance contract; free to attend.
Its Success Index (US) is 69.2 out of 100, placing it in the top 25% of elementary schools in United States and 862nd of 5,693 ranked elementary schools in California. Its strongest component is math proficiency (92th percentile), and its weakest is students per teacher (7th percentile).
Other published figures: enrollment 554.
There are 214 schools in San Jose; Alpha: Cornerstone Academy Preparatory ranks 44th of 213 scored schools there.
Success Index (US) breakdown
Each component is a percentile against elementary schools across United States.
- Math proficiency (30%)78%
- Reading proficiency (30%)75%
- Community advantage (fewer free/reduced-price lunch) (25%)55.2%
- Students per teacher (15%)23.1
The Success Index (US) summarises published data about a school community. It is not a measure of teaching quality. Read the methodology.
Published measures
All figures published for Alpha: Cornerstone Academy Preparatory by the official sources.
- Enrollment
- 554
- Students enrolled in the latest NCES directory year.
- Free/reduced-price lunch
- 55.2%
- Share of students eligible for free or reduced-price lunch.
- Students per teacher
- 23.1
- Enrollment divided by FTE teachers; not class size.
- Reading proficiency
- 75%
- Share of tested students proficient or above (all students, all grades).
- Math proficiency
- 78%
- Share of tested students proficient or above (all students, all grades).
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Schools near Alpha: Cornerstone Academy Preparatory
Closest schools by straight-line distance, with their Success Index (US).
Robert F. Kennedy Elementary
San Jose · Public elementary · Grades K–6
300 students · 80 m away
Yerba Buena High
San Jose · Public high · Grades 9–12
1,612 students · 454 m away
Bridges Academy
San Jose · Public middle · Grades 7–8
274 students · 485 m away
Luis Valdez Leadership Academy
San Jose · Charter high · Grades 9–12
225 students · 543 m away
College Connection Academy
San Jose · Public middle · Grades 7–8
213 students · 543 m away
ACE Esperanza Middle
San Jose · Charter middle · Grades 5–8
205 students · 562 m away
Santee Elementary
San Jose · Public elementary · Grades K–6
318 students · 613 m away
Rocketship Mosaic Elementary
San Jose · Charter elementary · Grades K–5
528 students · 634 m away
Jeanne R. Meadows Elementary
San Jose · Public elementary · Grades K–6
422 students · 1.1 km away
Shirakawa (George Sr.) Elementary
San Jose · Public elementary · Grades K–8
508 students · 1.1 km away
Similar schools
Charter elementary schools in California with a comparable Enrollment.
Denair Elementary Charter Academy
Denair · Charter elementary · Grades K–5
554 students
Discovery Charter
San Jose · Charter elementary · Grades K–8
555 students
Rocklin Academy
Rocklin · Charter elementary · Grades K–6
556 students
La Tijera Academy of Excellence Charter
Inglewood · Charter elementary · Grades K–8
552 students
Riverbank Language Academy
Riverbank · Charter elementary · Grades K–8
557 students
Lighthouse Community Charter
Oakland · Charter elementary · Grades K–8
549 students
Frequently asked questions
Is Alpha: Cornerstone Academy Preparatory a good school?
Alpha: Cornerstone Academy Preparatory has a Success Index (US) of 69.2 out of 100 (Top 25% of elementary schools in United States) and ranks #862 of 5,693 in California. The index summarises published data about the school community and, where available, attainment; it does not measure teaching quality, so visit the school and ask about support at your child's level.
Where does Alpha: Cornerstone Academy Preparatory rank in California?
Alpha: Cornerstone Academy Preparatory ranks #862 of 5,693 elementary schools in California and #11847 of 50,301 nationally on the Success Index (US) (2025 data).
How many students attend Alpha: Cornerstone Academy Preparatory?
Alpha: Cornerstone Academy Preparatory had 554 students in 2025.
Is Alpha: Cornerstone Academy Preparatory a elementary school or a high school?
Alpha: Cornerstone Academy Preparatory is classified as a elementary covering Grades K–8. It is a charter school.
What other schools are near Alpha: Cornerstone Academy Preparatory?
There are 10 schools within 15 km of Alpha: Cornerstone Academy Preparatory; they are listed on this page with their Success Index (US) and distance, and can be compared side by side.