School Profile · San Jose
Alpha: Cornerstone Academy Preparatory: The score is strong. The trajectory is stronger.
Alpha: Cornerstone Academy Preparatory pairs 60% proficiency with gains that hold up when the same students are tracked two years apart — the rare school that posts both.
1598 Lucretia Avenue, 95122 (opens in new tab)·Santa Clara County Office of Education·San Jose·Grades K-8·554 students·55% low-income·Charter·2024–25 CAASPP·(408) 361-3876·Website
Charter school — publicly funded, independently operated, open enrollment via lottery. Learn more
Scope Score
62
🚀 Growth Engine · Solid
ranked #862 statewide · #3 of 14 in Santa Clara County Office of Education
Alpha: Cornerstone Academy Preparatory scores 62 of 100 on SchoolScope's Scope Score — the 85th percentile of 5,744 California elementary schools (CDE CAASPP 2025).
Measures test performance, attendance, and climate — not arts, community, or your kid. How we score →
Most rating sites would stop at “60% proficient” and call it done. Alpha: Cornerstone Academy Preparatory deserves a closer read. The school sits in San Jose, where more than half of students qualify for free or reduced lunch — and reading the numbers without that context misreads the school.
The headline number: 51.5% of low-income students met the ELA standard — versus 38.2% for the same group statewide.
As a charter, Alpha: Cornerstone Academy Preparatory enrolls by application, not address — the score reads the same, the enrollment path doesn't.
The story this school is actually telling
The school, grade by grade
ELA · CAASPP 2024–25Different students, same year — each bar is one grade's proficiency mix.
31%
17%
52%
Grade 3 · 48% proficient
36%
26%
38%
Grade 4 · 62% proficient
43%
29%
28%
Grade 5 · 72% proficient
The honest read: the share exceeding rises 12.1pp across grades; the floor rises 24.1pp. The state average rises 4.5pp over the same span. Kids here gain ground the longer they stay — the pattern you want to see. A school visit and conversation with teachers will tell you more than this number.
51.5%
Low-income · ELA · met standard
Alpha: Cornerstone Academy Preparatory's most underrated number
51.5% of low-income students met the ELA standard — versus 38.2% for the same group statewide. That's the strongest kind of signal a school can post: it holds across income lines.
Alpha: Cornerstone Academy Preparatory low-income: 51.5%State low-income: 38.2%
The 5 things our score weighs
Exceeded standard
36.2%
State 21.3%
14.9pp above state avg
Met or exceeded
59.9%
State 42.7%
17.2pp above state avg
Growth (G3→G5)
+18.1pp
State -2.9pp
Scores improve across grades
Chronic absenteeism
10.6%
State 17.9%
7.3pp below state avg
Suspension rate
0.5%
State 1.6%
1.1pp below state avg
Worth a school visit
Ask what changed — new curriculum, new principal, new program. Momentum has a cause, and a visit will find it.
Where the path goes
The path below follows attendance boundaries — scores shown for each next step.
Planning ahead? 7 licensed preschools near this school →
Your other options
Nearby Elementary Schools
3 within ~3 mi · avg 62
Hammer Montessori at Galarza Elementary
San Jose Unified · 2.4 mi
Solid
70/100
Rocketship Spark Academy
Franklin-McKinley Elementary · 3.1 mi
Solid
61/100
Rocketship Discovery Prep
Santa Clara County Office of Education · 2.2 mi
Solid
57/100
Private alternatives nearby
Private schools within ~10 miles. These schools do not participate in state testing and cannot be scored or ranked.
The community around it
Community Profile
Context — not part of the Scope ScoreStudent demographics
Hispanic35.6%
White2.4%
Asian51.6%
Black2.0%
Other8.5%
GenderFemale 52.5%Male 47.5%
Low IncomeFree/reduced lunch eligible 55.2% (9pp below CA avg)
Resources & Access
Enrollment
554
Near CA avg (~620)
Transitional Kindergarten
TK status unconfirmed
No TK enrollment is on file with the state for this school — that isn't the same as “no TK.” Confirm directly with the district.
Student-Teacher Ratio
23:1
2 more students per teacher than CA avg
Per-Pupil Spending
$131,345
CA avg: $14,815 · District avg · NCES F-33
Teacher Salary Range
$81,491 – $152,166
District schedule · CA median ~$98K
At Alpha: Cornerstone Academy Preparatory in San Jose, 51.5% of low-income students met or exceeded the ELA standard in 2025, compared to 12.4% district-wide and 38.2% statewide. Alpha: Cornerstone Academy Preparatory outperforms its district average for low-income students by 39.1 percentage points in ELA. Other subgroups: Low-Income students (39.3% Math proficient); Asian students (77.3% ELA proficient). The largest proficiency gap is 41.8 percentage points for english learner students. Data source: California Department of Education, CAASPP 2024-25. 229 students tested.
Equity Gaps
ELA · English Learner−41.8pp
18.8% vs 60.6% overall · n=16
3 more gaps by subject
ELA Exceeded · English Learner−31.6pp
0.0% vs 31.6% overall · n=16
Math · Hispanic−36.6pp
15.1% vs 51.6% overall · n=115
Math Exceeded · English Learner−33.6pp
0.0% vs 33.6% overall · n=16
Subgroups with fewer than 15 students are excluded for privacy. Gaps of less than 3 percentage points are not shown.
Subgroup Proficiency
Low-Income229 tested
ELA 51.5%·Math 39.3%· +39.1pp vs district
Asian181 tested
ELA 77.3%·Math 77.3%
Hispanic126 tested
ELA 35.7%·Math 15.9%· +21.2pp vs district
Weighted average across tested grades. Subgroups with fewer than 15 students excluded. Data: CDE CAASPP 2024-25.
Subgroup Growth by Grade
Change in proficiency from lowest tested grade. Shows which groups are gaining ground.
Low-income student ELA proficiency rises by 26.5pp from grade 3 to grade 5 at this school.
Subgroups with fewer than 10 tested students per grade are not shown.
Funding Breakdown
Neighborhood Context
Median Income
$104K
$19K above CA median
Median Home Value
$873K
$214K above CA median
Bachelor's+
19%
16pp below CA avg
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2024) · ZIP-level
Whole Child
Teacher experience, college/career readiness, and more. Context only — never part of the Scope Score.
Teacher Experience
6.1 years avg experience
24 teachers · 13% first-year
Teacher Credentials
24% fully credentialed
Source: CDE SARC, 2024-25
Community Profile provides context about who attends this school and the resources available. These factors are never part of the Scope Score. Learn why →
For the data nerdsEvery number on this page
Score factors, grade-level breakdowns, subgroup proficiency, and peer comparisons.
For the data nerds
Every number on this page
Score factors, grade-level breakdowns, subgroup proficiency, and peer comparisons.
01Score factorsWeighted composite · 2024–25
Exceeded standard · 43%
36.2%
↑ vs CA 21.3% · 64th pctile
Met or exceeded · 22%
59.9%
↑ vs CA 42.7% · 63th pctile
Growth (G3→G5) · 15%
+18.1pp
↑ vs CA -2.9pp · 66th pctile
Chronic absenteeism · 10%
10.6%
↑ vs CA 17.9% · 62th pctile
Suspension rate · 5%
0.5%
↑ vs CA 1.6% · 59th pctile
02By grade & subgroupCAASPP 2024–25 · % of tested students
| ELA | Tested | EXC | MET | NEAR | NOT | MET+ | +/CA |
|---|---|---|---|---|---|---|---|
| Grade 3 | 58 | 31% | 17% | 31% | 21% | 48% | +5 |
| Grade 4 | 61 | 36% | 26% | 11% | 26% | 62% | +17 |
| Grade 5 | 58 | 43% | 29% | 17% | 10% | 72% | +25 |
| Grade 6 | 59 | 27% | 32% | 17% | 24% | 59% | +13 |
| Grade 7 | 59 | 34% | 32% | 19% | 15% | 66% | +18 |
| Grade 8 | 60 | 18% | 37% | 22% | 23% | 55% | +9 |
| Math | Tested | EXC | MET | NEAR | NOT | MET+ | +/CA |
|---|---|---|---|---|---|---|---|
| Grade 3 | 58 | 29% | 24% | 19% | 28% | 53% | +8 |
| Grade 4 | 61 | 34% | 23% | 25% | 18% | 57% | +16 |
| Grade 5 | 58 | 43% | 22% | 26% | 9% | 66% | +30 |
| Grade 6 | 59 | 37% | 12% | 25% | 25% | 49% | +14 |
| Grade 7 | 59 | 37% | 20% | 24% | 19% | 58% | +24 |
| Grade 8 | 60 | 20% | 7% | 38% | 35% | 27% | −6 |
| Science (CAST) | Tested | EXC | MET | NEAR | NOT |
|---|---|---|---|---|---|
| Grade 5/8/11 | 118 | 19% | 25% | 46% | 9% |
CAST is tested in grades 5, 8, and once in high school — not annually. Not part of the Scope Score.
| Subgroup · ELA | Tested | MET+ | vs district | vs CA |
|---|---|---|---|---|
| Socioeconomically Disadvantaged | 229 | 51.5% | +39 | +13 |
| Asian | 181 | 77.3% | — | +3 |
| Hispanic/Latino | 126 | 35.7% | +21 | −3 |
03Peer comparison · nearest elementary schoolssorted by Scope Score
| School | Dist | Scope | EXC | MET+ | Growth | Susp |
|---|---|---|---|---|---|---|
| Alpha: Cornerstone Academy Preparatory ← | — | 62 | 36.2% | 59.9% | +18.1 | 0.5% |
| Hammer Montessori at Galarza Elementary | 2.4 mi | 70 | 43.3% | 72.2% | +0.2 | 1.0% |
| Rocketship Spark Academy | 3.1 mi | 61 | 37.6% | 56.5% | +14.9 | 0.1% |
| Rocketship Discovery Prep | 2.2 mi | 57 | 31.5% | 50.0% | +8.7 | 0.1% |
| California average | — | 43 | 21.3% | 42.7% | −2.9 | 1.6% |
04More measurescontext · not all part of the Scope Score
Scope Score history
2022 · 2023 · 2024 · 2025 · rank #769 → #1798 → #1194 → #862
What we can't show
- — Scored here as an elementary school — other grade spans appear in the data appendix.
Source: CA Dept. of Education · CAASPP 2024–25 · n=5,744 elementary schools · Data updated 2026-07-03methodology · data updates · CSV · report issue
Frequently asked questions
Is Alpha: Cornerstone Academy Preparatory a good elementary school?
Alpha: Cornerstone Academy Preparatory has a Scope Score of 62 out of 100, placing it in the 85th percentile of California elementary schools and ranked #862 statewide. 36.2% of students exceeded the state standard on the 2025 CAASPP assessment, which is 14.9 percentage points above the California average of 21.3%. The Scope Score weights six dimensions for elementary schools: exceeded standard (43%), met or exceeded (22%), grade 3-to-5 growth (15%), chronic absenteeism (10%), ELPAC English Learner proficiency (5%), and suspension rate (5%). Data source: California Department of Education CAASPP 2025, analyzed by SchoolScope.
What are Alpha: Cornerstone Academy Preparatory's CAASPP test scores?
On the 2025 CAASPP Smarter Balanced Assessment, 59.9% of students at Alpha: Cornerstone Academy Preparatory met or exceeded the state standard in ELA and Math combined, and 36.2% exceeded it. The gap between those numbers matters: 23.7% of students are at the proficiency floor, while 36.2% pushed past it. Most rating sites report only the combined "proficient" number. SchoolScope surfaces the exceeded-vs-met split because it reveals whether a school's curriculum challenges students beyond minimum proficiency or paces toward it. 354 student-subject combinations were assessed.
How does Alpha: Cornerstone Academy Preparatory rank in California?
Alpha: Cornerstone Academy Preparatory ranks #862 among California elementary schools by Scope Score, placing it in the 85th percentile. This ranking is based on a weighted composite of 2025 CAASPP test performance (exceeded and met rates), grade-level growth (Grade 3 to grade 5 growth), chronic absenteeism, and suspension rate. Unlike single-number ratings, the Scope Score shows what drives the ranking so parents can decide what matters most to their family. See full methodology.
Is Alpha: Cornerstone Academy Preparatory getting better or worse?
Based on 2025 CAASPP data, proficiency at Alpha: Cornerstone Academy Preparatory increases by 18.1 percentage points from Grade 3 to grade 5 growth. This upward trajectory suggests the school is adding measurable value — students leave with higher proficiency rates than they entered with. Growth trajectory is weighted at 15% in the elementary Scope Score because it measures what the school does, not just who walks in the door.
What is the attendance and school culture like at Alpha: Cornerstone Academy Preparatory?
10.6% of students at Alpha: Cornerstone Academy Preparatory are chronically absent (missing 10% or more of school days), which is better than the California average of 17.9%. The suspension rate is 0.5%, indicating a low-discipline-incident environment. SchoolScope includes these culture metrics in the Scope Score because they reflect day-to-day school experience in ways test scores alone cannot.
How does Alpha: Cornerstone Academy Preparatory compare to other schools in San Jose?
Alpha: Cornerstone Academy Preparatory scores 62/100 (85th percentile) among California elementary schools. To compare with nearby schools, SchoolScope shows the same metrics side by side: exceeded rate, proficiency, growth trajectory, and school culture indicators. The school serves 554 students. Use the schools in San Jose page or the map view to compare all elementary schools nearby.
How does Alpha: Cornerstone Academy Preparatory serve low-income and underrepresented students?
At Alpha: Cornerstone Academy Preparatory in San Jose, 51.5% of low-income students met or exceeded the ELA standard in 2025, compared to 12.4% district-wide and 38.2% statewide. Alpha: Cornerstone Academy Preparatory outperforms its district average for low-income students by 39.1 percentage points in ELA. Other subgroups: Low-Income students (39.3% Math proficient); Asian students (77.3% ELA proficient). The largest proficiency gap is 41.8 percentage points for english learner students. Data source: California Department of Education, CAASPP 2024-25. 229 students tested. SchoolScope shows disaggregated test scores by demographic subgroup so you can see how a school performs for your child's specific group — not just the school-wide average. Subgroup data is context, not part of the Scope Score: we don't penalize schools for who they serve. See our equity approach.