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Best Public Schools in Zip Code 94521

New rankings! SchoolDigger recently updated its California rankings with newly released test scores for the 2025-26 school year.

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At a glance

Schools

6,836

Students

Districts

Top rankedClayton Valley Charter High307^th of 2,135 California high schools

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Biggest riser

Mountain View Elementary up 1,378 spots statewide this year

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Smallest classes

Concord High 19.5 students per teacher

SchoolDigger ratings

4★

3★

2★

1★

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Summary:

ZIP code 94521 has nine schools—five elementary, two middle and two high—with 6,836 students in total. Eight schools’ latest test results are from 2025–2026; Clayton Valley Charter High’s are from 2024–2025, so the two high schools cannot be fairly ranked against each other. The clearest overall finding is that results vary substantially among schools serving similar grades: elementary math results span 26 percentage points, and the two middle schools differ by 15 to 16 points across subjects.

Silverwood Elementary stands out in elementary ELA and math, with 55% and 54% proficient—the highest results in its grade span—and scores 6 points above the state in ELA and 16 points above in math. Mountain View Elementary had the strongest elementary science result at 49%, 13 points above the state, despite having the lowest elementary ELA score at 39%. Westwood Elementary was lowest in elementary math and science, at 28% and 27%. Among middle schools, Pine Hollow Middle led El Dorado Middle by 15 to 16 points in all three subjects, though Pine Hollow remained below the state in each. Concord High was below the state by 9 points in ELA, 22 in math and 16 in science; Clayton Valley’s ELA was 21 points above its same-year state result, while its math was essentially at the state level.

Recent changes are mixed, with some schools moving sharply in opposite directions. Mountain View gained 10 points in ELA, 11 in math and 25 in science from 2024–2025 to 2025–2026; Highlands Elementary’s science result fell 15 points. SchoolDigger’s statewide percentile ranking rose 12 points for Silverwood over three years but fell 15 for Westwood. Income measures are context, not explanations: all nine schools reported free/reduced lunch eligible percentages for 2024–2025, ranging from 32% at Highlands to 72% at Westwood; Pine Hollow reported 57%, compared with 75% at El Dorado. Attendance also differs: Highlands’ chronic absenteeism was 8%, versus 26% at Westwood and 25% at Mountain View, whose science result was nonetheless the strongest locally.

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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 Vaccination Finance All

School													Students/Teachers											Ranking (2026)				Ranking (2025)				CAST Science (2026)					Smarter Balanced Assessments English Language Arts/Literacy (2026)								Smarter Balanced Assessments Mathematics (2026)								Vaccination (2024-25)		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	CAST Science 5th Grade	CAST Science 8th Grade	CAST Science 11th Grade	CAST Science 12th 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 11th 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 11th Grade	Smarter Balanced Assessments Mathematics All Grades	Vaccination: Kindergartners with all required immunizations	Vaccination: Exemption rate	Per Pupil Expenditures Total	Sub-total from Federal Funds	Sub-total from State/Local Funds
Clayton Valley Charter High	Public, Charter	9-12	1101 Alberta Way	Concord	94521	Contra Costa County	Clayton Valley Charter High District	Yes	(n/a)	No	(n/a)	(925) 682-7474	2,373	94	25.1	22.3%	477 (20.1%)	68 (2.9%)	694 (29.2%)	257 (10.8%)	0 (0.0%)	4 (0.2%)	868 (36.6%)	84.4	307^th of 2135 public high schools	85.6%		75.3	491^st of 2162 public high schools	77.3%	184			49.1		48.6							77.3	77.3							45.5	45.5			$15,786	$431	$15,355
Ayers Elementary	Public	K-5	5120 Myrtle Dr.	Concord	94521	Contra Costa County	Mt. Diablo Unified	No	(n/a)	No	(n/a)	(925) 682-7686	394	16	24.6	40.4%	147 (37.3%)	13 (3.3%)	120 (30.5%)	58 (14.7%)	0 (0.0%)	2 (0.5%)	53 (13.5%)	44.5	2951^st of 5817 public elementary schools	49.3%		54	2363^rd of 5857 public elementary schools	59.7%	588	36.5				36.5	27.4	46.3	46.2					39.8	30.2	50.8	32.7					38.5	94%	0%	$551	$394	$157
Concord High	Public	9-12	4200 Concord Blvd.	Concord	94521	Contra Costa County	Mt. Diablo Unified	No	(n/a)	No	(n/a)	(925) 687-2030	1,137	58	19.5	69.6%	219 (19.3%)	30 (2.6%)	656 (57.7%)	114 (10.0%)	5 (0.4%)	5 (0.4%)	103 (9.1%)	32.7	1432^nd of 2135 public high schools	32.9%		36.6	1340^th of 2162 public high schools	38.0%	92			20.2		19.9							40.1	40.1							16.6	16.6			$562	$356	$206
El Dorado Middle	Public	6-8	1750 West St.	Concord	94521	Contra Costa County	Mt. Diablo Unified	No	(n/a)	No	(n/a)	(925) 682-5700	861	37	23.5	75.4%	139 (16.1%)	24 (2.8%)	489 (56.8%)	96 (11.1%)	1 (0.1%)	21 (2.4%)	91 (10.6%)	19.8	2230^th of 2740 public middle schools	18.6%		19	2268^th of 2761 public middle schools	17.9%	38		17.7			17.7				27.4	33.9	26.0		29.4				18.0	20.5	14.1		17.8			$407	$407	$00
Highlands Elementary	Public	K-5	1326 Pennsylvania Blvd.	Concord	94521	Contra Costa County	Mt. Diablo Unified	No	(n/a)	No	(n/a)	(925) 672-5252	512	19	26.9	32.4%	167 (32.6%)	8 (1.6%)	147 (28.7%)	89 (17.4%)	0 (0.0%)	1 (0.2%)	100 (19.5%)	57	2209^th of 5817 public elementary schools	62.0%		57.4	2199^th of 5857 public elementary schools	62.5%	10	28.1				28.1	57.0	47.8	46.3					50.2	58.2	48.9	34.2					47.0	94%	3%	$244	$177	$67
Mountain View Elementary	Public	K-5	1705 Thornwood Dr.	Concord	94521	Contra Costa County	Mt. Diablo Unified	No	(n/a)	No	(n/a)	(925) 689-6450	267	11	24.2	56.2%	75 (28.1%)	8 (3.0%)	113 (42.3%)	28 (10.5%)	1 (0.4%)	4 (1.5%)	38 (14.2%)	48.6	2688^th of 5817 public elementary schools	53.8%		28.8	4066^th of 5857 public elementary schools	30.6%	1378	48.9				48.9	50.0	23.4	48.9					39.3	35.7	27.7	48.9					37.7	90%	0%	$601	$480	$121
Pine Hollow Middle	Public	6-8	5522 Pine Hollow Rd.	Concord	94521	Contra Costa County	Mt. Diablo Unified	No	(n/a)	No	(n/a)	(925) 672-5444	538	25	21.2	57.1%	152 (28.3%)	17 (3.2%)	204 (37.9%)	95 (17.7%)	0 (0.0%)	4 (0.7%)	66 (12.3%)	47	1276^th of 2740 public middle schools	53.4%		54.3	1063^rd of 2761 public middle schools	61.5%	213		33.1			33.1				44.2	44.0	47.4		45.1				35.9	27.7	35.1		32.9			$273	$249	$24
Silverwood Elementary	Public	K-5	1649 Claycord Ave.	Concord	94521	Contra Costa County	Mt. Diablo Unified	No	(n/a)	No	(n/a)	(925) 687-1150	530	21	25.2	53.2%	131 (24.7%)	14 (2.6%)	188 (35.5%)	115 (21.7%)	0 (0.0%)	5 (0.9%)	77 (14.5%)	66	1779^th of 5817 public elementary schools	69.4%		64.4	1865^th of 5857 public elementary schools	68.2%	86	32.9				32.9	46.6	64.6	54.2					55.5	51.4	71.4	39.0					54.2	96%	0%	$301	$301	$00
Westwood Elementary	Public	K-5	1748 West St.	Concord	94521	Contra Costa County	Mt. Diablo Unified	No	(n/a)	No	(n/a)	(925) 685-4202	224	11	20.3	72.3%	67 (29.9%)	1 (0.4%)	103 (46.0%)	30 (13.4%)	1 (0.4%)	1 (0.4%)	21 (9.4%)	35.4	3554^th of 5817 public elementary schools	38.9%		36.4	3449^th of 5857 public elementary schools	41.1%	105	26.5				26.5	27.6	47.4	42.9					40.5	24.1	39.5	22.5					28.5	≥ 95%		$345	$330	$15

Cities Near Zip Code 94521

City	Distance	# of Schools	Statewide Rank
Concord	0.22 mi	30	617^th
Clayton	1.94 mi	2	68^th
Pittsburg	3.39 mi	16	811^th
Walnut Creek	3.45 mi	16	89^th
Bay Point	4.21 mi	4	876^th

See the top CA California cities

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.