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Alpha: Cornerstone Academy Preparatory

Q: Is Alpha: Cornerstone Academy Preparatory a good school?

Alpha: Cornerstone Academy Preparatory ranks 1218 th of 5804 California elementary schools. SchoolDigger rates this school 4 stars out of 5.

Public, Charter Grades K-8

1218^th

SchoolDigger Rank ?

of 5,804 California Elementary Schools

Better than 79% of California elementary schools

Summary

Alpha: Cornerstone Academy Preparatory is a K–8 school in San Jose, serving 554 students in an urban area with several nearby elementary schools and other K–8 schools. Its strongest headline is that in 2025–26 it outperformed California and every nearby school with same-year results in English language arts (ELA), math, and science.

Cornerstone’s 2025–26 proficiency rates were 64% in ELA, 54% in math, and 56% in science, compared with state rates of 49%, 38%, and 36%. The strongest nearby same-year results were at Shirakawa (George Senior) Elementary: 49% in ELA, 39% in math, and 41% in science. Cornerstone’s closest grade-level areas are fourth-grade ELA, at 47% versus 46% statewide, and seventh-grade math, at 42% versus 38%. SchoolDigger places the school at the 79th percentile with four stars; its district ranks at the 89th percentile. The supplied data contain no achievement scores for the district, so a school-to-district test-score comparison cannot be made.

Science has made the clearest gains: proficiency rose from 34% in 2022–23 to 56% in 2025–26, while ELA rose from 59% to 64% and math from 51% to 54%. Chronic absenteeism also declined, from 16% in 2022–23 to 8% in 2025–26, below the state’s 18%. In 2024–25, 55% of students were free/reduced lunch eligible, the lowest reported rate among the nearby schools; the next lowest was 60% at Alpha: Blanca Alvarado. The student-teacher ratio was 23:1, close to the nearby average of 22.7:1. SchoolDigger’s statewide measure of how well the school serves Hispanic Students was at the 37th percentile in 2025–26, compared with 79th overall; its Asian Students measure was at the 56th percentile, up 15 points since 2023–24 but still below the overall percentile.

554

Students ?

23.0

Student/teacher ratio ?

$32,962

Per pupil spending ?

55.2%

Free/reduced lunch eligible (2024-25) ?

All students in California receive free school meals.

1598 Lucretia Ave.
San Jose, CA 95122-3817

(408) 361-3876

District: Alpha: Cornerstone Academy Preparatory District

Racial breakdown:

Asian:

56.9%

Hispanic:

35.6%

Two or more races:

3.2%

See top rated California elementary schools

Compare Alpha: Cornerstone Academy Preparatory to nearby elementary schools!

At a glance

▲ Ranking trend: Rebounding — 72nd percentile in 2023 → 79th in 2026

Strengths

✓Test scores above the California average (59% vs 42% meeting standards)

✓Ranks in the top 21% of California elementary schools

✓Ranking is rebounding — up to 79th (2026) from a 72nd-percentile low (2023)

Worth a look

!Some student groups rank well below the school's overall statewide standing

!Large classes — about 23 students per teacher

Students meeting standards (2025-2026) ?

This school59%

California avg42%

Elementary school

1,218^th of 5,804

California public elementary schools ?

Top 21%▼ down 10 pts since 2019

From top 11% (2019) to top 21% (2026)

See the entire ranking list of California Elementary Schools →

★★★★★

SchoolDigger rating ?

Middle school

345^th of 2,703

California public middle schools ?

Top 13%▼ down 4 pts since 2019

From top 9% (2019) to top 13% (2026)

See the entire ranking list of California Middle Schools →

★★★★★

SchoolDigger rating ?

106^th of 968Alpha: Cornerstone Academy Preparatory District among California districts

Statewide rank percentile over time (100 = the top-ranked school in the state; click a legend item to add a student group)

Elementary school ranking

Show full rank history (all student groups)

All Students

Year	Avg score	Statewide rank	California percentile	Rating
2026	77.9	1218 of 5804	79.0%	★★★★☆
2025	78.5	1220 of 5857	79.2%	★★★★☆
2024	76.7	1304 of 5869	77.8%	★★★★☆
2023	69.0	1617 of 5859	72.4%	★★★★☆
2022	81.2	1136 of 5883	80.7%	★★★★☆
2019	90.2	633 of 5789	89.1%	★★★★☆

Asian

Year	Avg score	Statewide rank	California percentile	Rating
2026	63.8	531 of 1207	56.0%	★★★☆☆
2025	59.5	622 of 1203	48.3%	★★☆☆☆
2024	53.8	705 of 1205	41.5%	★★☆☆☆
2023	39.6	846 of 1190	28.9%	★☆☆☆☆
2022	58.2	624 of 1154	45.9%	★★☆☆☆
2019	73.3	296 of 1149	74.2%	★★★★☆

English Language Learner

Year	Avg score	Statewide rank	California percentile	Rating
2024	49.2	1225 of 3162	61.3%	★★★☆☆
2023	51.5	1108 of 3245	65.9%	★★★☆☆
2022	58.2	833 of 3311	74.8%	★★★★☆
2019	94.3	109 of 3275	96.7%	★★★★★

Female

Year	Avg score	Statewide rank	California percentile	Rating
2026	73.1	1344 of 5569	75.9%	★★★★☆
2025	80.8	1043 of 5597	81.4%	★★★★☆
2024	79.9	1102 of 5612	80.4%	★★★★☆
2023	69.3	1531 of 5609	72.7%	★★★★☆
2022	75.6	1300 of 5635	76.9%	★★★★☆
2019	86.8	733 of 5492	86.7%	★★★★☆

Hispanic

Year	Avg score	Statewide rank	California percentile	Rating
2026	37.3	3183 of 5085	37.4%	★★☆☆☆
2025	38.9	3111 of 5107	39.1%	★★☆☆☆
2024	39.2	3025 of 5107	40.8%	★★☆☆☆
2023	32.2	3528 of 5087	30.6%	★★☆☆☆
2022	49.0	2273 of 5084	55.3%	★★★☆☆
2019	63.2	1521 of 4963	69.4%	★★★☆☆

Low Socio Economic Status

Year	Avg score	Statewide rank	California percentile	Rating
2026	80.2	755 of 5412	86.0%	★★★★☆
2025	79.3	803 of 5460	85.3%	★★★★☆
2024	80.3	813 of 5517	85.3%	★★★★☆
2023	65.4	1458 of 5363	72.8%	★★★★☆
2022	86.7	477 of 5264	90.9%	★★★★★
2019	95.1	137 of 5173	97.4%	★★★★★

Male

Year	Avg score	Statewide rank	California percentile	Rating
2026	79.5	1080 of 5590	80.7%	★★★★☆
2025	71.5	1455 of 5628	74.1%	★★★★☆
2024	67.4	1644 of 5643	70.9%	★★★★☆
2023	65.1	1722 of 5638	69.5%	★★★☆☆
2022	83.1	960 of 5663	83.0%	★★★★☆
2019	90.5	543 of 5510	90.1%	★★★★★

Middle school ranking

Show full rank history (all student groups)

All Students

Year	Avg score	Statewide rank	California percentile	Rating
2026	85.5	345 of 2703	87.2%	★★★★☆
2025	69.1	693 of 2761	74.9%	★★★★☆
2024	83.4	410 of 2783	85.3%	★★★★☆
2023	82.4	428 of 2781	84.6%	★★★★☆
2022	87.2	339 of 2740	87.6%	★★★★☆
2019	91.1	239 of 2715	91.2%	★★★★★

Asian

Year	Avg score	Statewide rank	California percentile	Rating
2026	71.4	236 of 769	69.3%	★★★☆☆
2025	68.9	264 of 739	64.3%	★★★☆☆
2024	67.9	268 of 743	63.9%	★★★☆☆
2023	66.0	280 of 715	60.8%	★★★☆☆
2022	69.9	241 of 733	67.1%	★★★☆☆
2019	81.5	89 of 745	88.1%	★★★★☆

English Language Learner

Year	Avg score	Statewide rank	California percentile	Rating
2019	99.5	13 of 1442	99.1%	★★★★★

Female

Year	Avg score	Statewide rank	California percentile	Rating
2026	83.4	366 of 2483	85.3%	★★★★☆
2025	60.1	836 of 2533	67.0%	★★★☆☆
2024	82.2	403 of 2551	84.2%	★★★★☆
2023	79.3	444 of 2531	82.5%	★★★★☆
2022	80.7	415 of 2509	83.5%	★★★★☆
2019	90.7	206 of 2380	91.3%	★★★★★

Hispanic

Year	Avg score	Statewide rank	California percentile	Rating
2026	56.7	831 of 2325	64.3%	★★★☆☆
2025	30.7	1619 of 2395	32.4%	★★☆☆☆
2024	56.9	807 of 2388	66.2%	★★★☆☆
2023	54.5	854 of 2374	64.0%	★★★☆☆
2022	60.1	719 of 2359	69.5%	★★★☆☆
2019	89.3	149 of 2213	93.3%	★★★★★

Low Socio Economic Status

Year	Avg score	Statewide rank	California percentile	Rating
2026	86.3	216 of 2493	91.3%	★★★★★
2025	70.2	534 of 2542	79.0%	★★★★☆
2024	85.1	266 of 2579	89.7%	★★★★☆
2023	82.1	293 of 2531	88.4%	★★★★☆
2022	94.3	87 of 2458	96.5%	★★★★★
2019	97.5	31 of 2369	98.7%	★★★★★

Male

Year	Avg score	Statewide rank	California percentile	Rating
2026	84.9	326 of 2478	86.8%	★★★★☆
2025	75.9	501 of 2534	80.2%	★★★★☆
2024	78.4	464 of 2552	81.8%	★★★★☆
2023	82.2	386 of 2538	84.8%	★★★★☆
2022	90.1	238 of 2527	90.6%	★★★★★
2019	89.1	264 of 2407	89.0%	★★★★☆

How student groups rank statewide ? (each group's percentile vs the same group at other schools — higher is better; the +/- beside each compares the group with this school's overall percentile)

Elementary school

Low Socio Economic Status (2026)86th percentile+7 vs school

Male (2026)81st percentile~ school

Female (2026)76th percentile-3 vs school

English Language Learner (2024)61st percentile-17 vs school

Asian (2026)56th percentile-23 vs school

Hispanic (2026)37th percentile-42 vs school

Middle school

English Language Learner (2019)99th percentile+8 vs school

Low Socio Economic Status (2026)91st percentile+4 vs school

Male (2026)87th percentile~ school

Female (2026)85th percentile~ school

Asian (2026)69th percentile-18 vs school

Hispanic (2026)64th percentile-23 vs school

By subject vs California (2025-2026) ?

English Language Arts/Literacy64%+15 vs state

Science56%+20 vs state

Mathematics54%+16 vs state

★

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Schools Near Alpha: Cornerstone Academy Preparatory

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Ranking:

E Elementary M Middle H High A Alternative P Private

Choose columns to see: Summary School Students/Teachers Ranking Test Scores Immunizations Finance All

School													Students/Teachers											Ranking (2026)				Ranking (2025)				CSA Spanish Overall (2026)				CSA Spanish Listening (2026)				CSA Spanish Writing (2026)				CSA Spanish Reading (2026)				CAST Science (2026)			Smarter Balanced Assessments English Language Arts/Literacy (2026)							Smarter Balanced Assessments Mathematics (2026)							% Completely Immunized (2022)	% Polio (2022)	% Hepatitis B (2022)	% Varicella (2022)	% DTP (2022)	% MMR (2022)	Per Pupil Expenditures (2025)
Name	Type	Grades	Address	City	Zip	County	District	Is Charter	Is Magnet	Is Virtual	Is Title I	Phone	Enrollment	Full-time Teachers	Student/ Teacher Ratio	Free/reduced lunch (2024-25)	White	Black	Hispanic	Asian	American Indian	Pacific Islander	Two or More Races	Average Standard Score (2026)	Statewide Rank (2026)	State Percentile (2026)	SchoolDigger Rating (2026)	Average Standard Score (2025)	Statewide Rank (2025)	State Percentile (2025)	Rank Change from Previous Year	CSA Spanish Overall 3rd Grade	CSA Spanish Overall 4th Grade	CSA Spanish Overall 5th Grade	CSA Spanish Overall All Grades	CSA Spanish Listening 3rd Grade	CSA Spanish Listening 4th Grade	CSA Spanish Listening 5th Grade	CSA Spanish Listening All Grades	CSA Spanish Writing 3rd Grade	CSA Spanish Writing 4th Grade	CSA Spanish Writing 5th Grade	CSA Spanish Writing All Grades	CSA Spanish Reading 3rd Grade	CSA Spanish Reading 4th Grade	CSA Spanish Reading 5th Grade	CSA Spanish Reading All Grades	CAST Science 5th Grade	CAST Science 8th Grade	CAST Science All Grades	Smarter Balanced Assessments English Language Arts/Literacy 3rd Grade	Smarter Balanced Assessments English Language Arts/Literacy 4th Grade	Smarter Balanced Assessments English Language Arts/Literacy 5th Grade	Smarter Balanced Assessments English Language Arts/Literacy 6th Grade	Smarter Balanced Assessments English Language Arts/Literacy 7th Grade	Smarter Balanced Assessments English Language Arts/Literacy 8th Grade	Smarter Balanced Assessments English Language Arts/Literacy All Grades	Smarter Balanced Assessments Mathematics 3rd Grade	Smarter Balanced Assessments Mathematics 4th Grade	Smarter Balanced Assessments Mathematics 5th Grade	Smarter Balanced Assessments Mathematics 6th Grade	Smarter Balanced Assessments Mathematics 7th Grade	Smarter Balanced Assessments Mathematics 8th Grade	Smarter Balanced Assessments Mathematics All Grades	% Completely Immunized KG	% Polio KG	% Hepatitis B KG	% Varicella KG	% DTP KG	% MMR KG	Per Pupil Expenditures Total	Sub-total from Federal Funds	Sub-total from State/Local Funds
Alpha: Cornerstone Academy Preparatory	Public, Charter	K-8	1598 Lucretia Ave.	San Jose	95122	Santa Clara County	Alpha: Cornerstone Academy Preparatory District	Yes	(n/a)	No	(n/a)	(408) 361-3876	554	24	23.0	55.2%	13 (2.3%)	11 (2.0%)	197 (35.6%)	315 (56.9%)	0 (0.0%)	0 (0.0%)	18 (3.2%)	77.9	1218^th of 5804 public elementary schools	79.0%		78.5	1220^th of 5857 public elementary schools	79.2%	2																	49.2	63.5	56.4	60.3	46.6	71.4	67.7	67.8	71.4	64.5	58.6	48.3	55.6	64.5	42.4	55.6	54.3							$32,962	$31,890	$1,072
Robert F. Kennedy Elementary	Public	K-6	1602 Lucretia Ave.	San Jose	95122	Santa Clara County	Franklin-McKinley Elementary	No	(n/a)	No	(n/a)	(408) 283-6325	300	15	20.3	90.3%	2 (0.7%)	5 (1.7%)	235 (78.3%)	56 (18.7%)	0 (0.0%)	1 (0.3%)	1 (0.3%)	17.6	4999^th of 5804 public elementary schools	13.9%		24.9	4414^th of 5857 public elementary schools	24.6%	585																	12.1		12.1	20.6	24.4	25.9	26.7			24.7	20.6	14.6	21.1	27.7			21.2							$30,877	$26,566	$4,311
Santee Elementary	Public	K-6	1313 Audubon Dr.	San Jose	95122	Santa Clara County	Franklin-McKinley Elementary	No	(n/a)	No	(n/a)	(408) 283-6450	318	17	19.2	89.9%	1 (0.3%)	2 (0.6%)	266 (83.6%)	45 (14.2%)	0 (0.0%)	2 (0.6%)	2 (0.6%)	19.4	4858^th of 5804 public elementary schools	16.3%		12.8	5433^rd of 5857 public elementary schools	7.2%	575																	17.2		17.2	20.6	29.6	34.5	23.0			26.4	23.3	30.9	19.0	16.4			22.3	93.4	95.1	95.1	95.1	93.4	95.1	$29,092	$25,924	$3,168
Rocketship Mosaic Elementary	Public, Charter	K-5	950 Owsley Ave.	San Jose	95110	Santa Clara County	Rocketship Mosaic Elementary District	Yes	(n/a)	No	(n/a)	(877) 806-0920	528	16	33.0	66.9%	9 (1.7%)	5 (0.9%)	235 (44.5%)	273 (51.7%)	0 (0.0%)	2 (0.4%)	4 (0.8%)								(n/a)																																		95.0	96.0		96.0	96.0	95.0
Shirakawa (George Senior) Elementary	Public	K-6	665 Wool Creek Dr.	San Jose	95112	Santa Clara County	Franklin-McKinley Elementary	No	(n/a)	No	(n/a)	(408) 283-6086	508	22	23.0	82.7%	22 (4.3%)	9 (1.8%)	290 (57.1%)	165 (32.5%)	1 (0.2%)	0 (0.0%)	21 (4.1%)	55.3	2303^rd of 5804 public elementary schools	60.3%		47.1	2748^th of 5857 public elementary schools	53.1%	445																	40.7		40.7	53.9	35.9	54.2	53.2			49.3	47.4	40.7	39.0	33.3			39.3	95.2	95.2		95.2	95.2	95.2	$23,266	$21,000	$2,266
O. S. Hubbard Elementary	Public	K-5	1680 Foley Ave.	San Jose	95122	Santa Clara County	Alum Rock Union Elementary	No	(n/a)	No	(n/a)	(408) 928-7700	427	19	22.0	85.0%	6 (1.4%)	6 (1.4%)	378 (88.5%)	24 (5.6%)	4 (0.9%)	3 (0.7%)	6 (1.4%)	15.5	5165^th of 5804 public elementary schools	11.0%		9.6	5655^th of 5857 public elementary schools	3.4%	490																	11.3		11.3	31.9	19.3	24.6				24.9	30.6	15.7	9.9				18.5							$19,790	$18,784	$1,006
Alpha: Jose Hernandez	Public, Charter	K-8	1601 Cunningham Ave.	San Jose	95151	Santa Clara County	Alpha: Jose Hernandez District	Yes	(n/a)	No	(n/a)	(408) 780-1551	440	20	22.1	90.9%	2 (0.5%)	1 (0.2%)	426 (96.8%)	9 (2.0%)	0 (0.0%)	0 (0.0%)	2 (0.5%)								(n/a)
Alpha: Blanca Alvarado	Public, Charter	K-8	1601 Cunningham Ave.	San Jose	95122	Santa Clara County	Alpha: Blanca Alvarado District	Yes	(n/a)	No	(n/a)	(408) 780-0831	500	19	25.8	60.2%	5 (1.0%)	1 (0.2%)	462 (92.4%)	21 (4.2%)	0 (0.0%)	0 (0.0%)	11 (2.2%)								(n/a)																																		96.0			96.0
Jeanne R. Meadows Elementary	Public	K-6	1250 Taper Ln.	San Jose	95122	Santa Clara County	Franklin-McKinley Elementary	No	(n/a)	No	(n/a)	(408) 283-6300	206	9	22.8	81.1%	1 (0.5%)	1 (0.5%)	180 (87.4%)	21 (10.2%)	1 (0.5%)	0 (0.0%)	2 (1.0%)	29.9	3985^th of 5804 public elementary schools	31.3%		19.8	4837^th of 5857 public elementary schools	17.4%	852	0.0	8.0	4.2	4.1	33.3	16.0	25.0	24.7	8.3	8.0	0.0	5.5	0.0	8.0	0.0	2.7	15.4		15.4	23.9	34.2	27.3	57.1			33.1	30.6	35.0	25.6	35.7			31.3							$39,723	$36,964	$2,759
Selma Olinder Elementary	Public	K-5	890 East William	San Jose	95116	Santa Clara County	San Jose Unified	No	(n/a)	No	(n/a)	(408) 535-6245	269	16	16.3	80.3%	7 (2.6%)	2 (0.7%)	239 (88.8%)	18 (6.7%)	0 (0.0%)	0 (0.0%)	3 (1.1%)	14.1	5286^th of 5804 public elementary schools	8.9%		16.9	5114^th of 5857 public elementary schools	12.7%	172																	8.0		8.0	24.2	19.5	33.3				24.5	20.0	19.5	12.0				17.8	92.3						$32,364	$27,802	$4,562

Frequently Asked Questions about Alpha: Cornerstone Academy Preparatory

Is Alpha: Cornerstone Academy Preparatory a good school?

Alpha: Cornerstone Academy Preparatory ranks 1218^th of 5804 California elementary schools. SchoolDigger rates this school 4 stars out of 5.

How many students attend Alpha: Cornerstone Academy Preparatory?

In the 2024-25 school year, 554 students attended Alpha: Cornerstone Academy Preparatory.

What is the racial makeup of Alpha: Cornerstone Academy Preparatory?

Students at Alpha: Cornerstone Academy Preparatory are 57% Asian, 36% Hispanic, 3% Two or more races, 2% White, 2% African American.

What district is Alpha: Cornerstone Academy Preparatory in?

Alpha: Cornerstone Academy Preparatory District

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Latest California data All new data »

2025–26 attendance data, dropout rates & graduation ratesNewOct 15, 2026

2025–26 CAST, CSA Spanish & Smarter Balanced Assessments scoresNewOct 15, 2026

2024–25 school spending dataJul 1, 2026

2024–25 attendance dataMar 13, 2026

SchoolDigger data sources: National Center for Education Statistics, U.S. Department of Education, the U.S. Census Bureau and the California Department of Education.

IMPORTANT DISCLAIMERS: Not all boundaries are included. We make every effort to ensure that boundaries are up-to-date. But it's important to note that these are approximations and are for general informational purposes only. To verify legal descriptions of boundaries or school locations, contact your local tax assessor's office and/or school district.