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Best Public Schools in Zip Code 92021

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

7,974

Students

Districts

Top rankedKidinnu Academy1805^th of 5,817 California elementary schools

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Biggest riser

Crest Elementary up 631 spots statewide this year

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Smallest classes

Los Coches Creek Middle 19.5 students per teacher

SchoolDigger ratings

3★

2★

1★

0★

1 school without a SchoolDigger rating (too few tested students)

See the top-ranked California schools →

Summary:

Zip code 92021 has 11 schools: seven elementary schools, two middle schools, one high school and one alternative school. Ten schools have 2025–26 test results; Bostonia Global has results only for 2024–25. The most important finding is how widely results differ from school to school: the range is 38 percentage points in ELA, 39 points in math and 33 points in science.

Blossom Valley Elementary and Kidinnu Academy are the clearest standouts. Blossom Valley leads ELA at 50% and science at 42%, and scores 44% in math; Kidinnu leads math at 47% and is near 50% in ELA. Both are above California’s rates in ELA and math, while Blossom Valley is also above the state in science. At the other end, Naranca Elementary has the lowest ELA result at 12%, and Magnolia Elementary has the lowest math and science results, at 8% and 9%. Across schools, science is closest to the state average (25% versus 36%); ELA is furthest behind (31% versus 49%).

Recent progress is strongest in science, but not consistent across subjects: among the same 10 schools, the science average rose from 16% to 25% between 2024–25 and 2025–26, and math rose from 22% to 23%; ELA stayed near 31%, leaving the area one percentage point further behind the state. SchoolDigger ranks Blossom Valley in the 64th percentile and Kidinnu in the 69th for 2025–26; its three-year rankings also show gains for Crest Elementary (19th to 43rd percentile) and Rios Elementary (17th to 52nd). As context, all schools report free/reduced lunch eligibility for 2024–25, ranging from 62% at Crest to 96% at Naranca; this is not an explanation for their results. Ratios also vary: Los Coches Creek Middle reports 19.5 students per teacher, compared with 25.4 at Kidinnu.

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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
Kidinnu Academy	Public, Charter	K-8	1025 North Second St.	El Cajon	92021	San Diego County	Kidinnu Academy District	Yes	(n/a)	No	(n/a)	(619) 938-4864	433	17	25.4	89.8%	426 (98.4%)	0 (0.0%)	7 (1.6%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	65.5	1805^th of 5817 public elementary schools	69.0%		53.5	2394^th of 5857 public elementary schools	59.1%	589	42.0	13.3			35.4	48.1	44.0	50.0	56.0	47.6	60.0		49.8	65.4	50.0	46.0	48.0	23.8	33.3		46.7	≥ 98%		$16,376	$728	$15,648
Bostonia Global	Public, Charter, Alternative	K-12	1390 Broadway	El Cajon	92021	San Diego County	Bostonia Global District	Yes	(n/a)	No	(n/a)	(619) 588-3121	1,266	54	23.4	83.8%	244 (19.3%)	49 (3.9%)	882 (69.7%)	22 (1.7%)	0 (0.0%)	2 (0.2%)	66 (5.2%)								(n/a)																						95%	1%	$15,896	$358	$15,538
Crest Elementary	Public	K-8	2000 Suncrest Blvd.	El Cajon	92021	San Diego County	Cajon Valley Union	No	(n/a)	No	(n/a)	(619) 558-3128	271	12	22.5	61.6%	153 (56.5%)	2 (0.7%)	77 (28.4%)	2 (0.7%)	2 (0.7%)	4 (1.5%)	31 (11.4%)	38.5	3329^th of 5817 public elementary schools	42.8%		30	3960^th of 5857 public elementary schools	32.4%	631	25.7	41.2			33.3	54.2	42.3	40.0	44.7	35.9	41.2		42.4	45.8	34.6	11.4	23.7	28.2	26.5		27.0	≥ 95%		$23,470	$1,139	$22,331
Greenfield Middle	Public	6-8	1495 Greenfield Dr.	El Cajon	92021	San Diego County	Cajon Valley Union	No	(n/a)	No	(n/a)	(619) 588-3103	730	32	22.6	94.1%	256 (35.1%)	64 (8.8%)	317 (43.4%)	49 (6.7%)	3 (0.4%)	7 (1.0%)	34 (4.7%)	12.2	2525^th of 2740 public middle schools	7.8%		16.7	2369^th of 2761 public middle schools	14.2%	156		17.1			17.1				15.6	21.6	23.7		20.6				9.4	12.3	11.6		11.2			$22,013	$1,996	$20,017
W. D. Hall Elementary	Public	K-5	1376 Pepper Dr.	El Cajon	92021	San Diego County	Cajon Valley Union	No	(n/a)	No	(n/a)	(619) 588-3136	579	23	24.9	90.2%	247 (42.7%)	36 (6.2%)	200 (34.5%)	52 (9.0%)	1 (0.2%)	9 (1.6%)	34 (5.9%)	11.9	5482^nd of 5817 public elementary schools	5.8%		12.8	5438^th of 5857 public elementary schools	7.2%	44	14.0				14.0	25.4	14.9	19.2					19.2	28.6	10.9	9.6					15.1	94%	0%	$22,615	$1,689	$20,926
Magnolia Elementary	Public	K-5	650 Greenfield Dr.	El Cajon	92021	San Diego County	Cajon Valley Union	No	(n/a)	No	(n/a)	(619) 588-3080	703	27	26.2	91.0%	146 (20.8%)	98 (13.9%)	309 (44.0%)	85 (12.1%)	1 (0.1%)	9 (1.3%)	55 (7.8%)	6.1	5761^st of 5817 public elementary schools	1.0%		6.8	5787^th of 5857 public elementary schools	1.2%	26	9.3				9.3	6.3	15.5	13.9					12.0	12.6	6.5	3.7					7.6	89%	0%	$20,768	$1,692	$19,076
Naranca Elementary	Public	K-6	1030 Naranca Ave.	El Cajon	92021	San Diego County	Cajon Valley Union	No	(n/a)	No	(n/a)	(619) 588-3087	985	36	27.3	96.1%	333 (33.8%)	71 (7.2%)	265 (26.9%)	274 (27.8%)	3 (0.3%)	7 (0.7%)	32 (3.2%)	6.8	5737^th of 5817 public elementary schools	1.4%		7.7	5752^nd of 5857 public elementary schools	1.8%	15	12.1				12.1	13.3	7.9	13.7					11.7	9.8	6.8	7.3					7.9	86%	0%	$19,396	$1,797	$17,599
Rios Elementary	Public	K-5	14314 Rios Canyon Rd.	El Cajon	92021	San Diego County	Cajon Valley Union	No	(n/a)	No	(n/a)	(619) 588-3090	255	12	21.2	76.1%	98 (38.4%)	16 (6.3%)	110 (43.1%)	8 (3.1%)	1 (0.4%)	0 (0.0%)	22 (8.6%)	46.7	2806^th of 5817 public elementary schools	51.8%		38.4	3323^rd of 5857 public elementary schools	43.3%	517	33.3				33.3	39.5	50.0	40.0					42.5	47.7	56.3	20.0					39.7	92%	0%	$23,469	$1,650	$21,819
Blossom Valley Elementary	Public	K-5	9863 Oakmont Terr.	El Cajon	92021	San Diego County	Cajon Valley Union	No	(n/a)	No	(n/a)	(619) 588-3678	533	23	23.6	65.7%	323 (60.6%)	8 (1.5%)	147 (27.6%)	9 (1.7%)	2 (0.4%)	2 (0.4%)	42 (7.9%)	59	2120^th of 5817 public elementary schools	63.6%		49.9	2596^th of 5857 public elementary schools	55.7%	476	42.2				42.2	44.1	56.4	50.6					50.0	53.8	46.2	32.5					44.5	95%	0%	$22,166	$1,131	$21,035
Los Coches Creek Middle	Public	6-8	9669 Dunbar Ln.	El Cajon	92021	San Diego County	Cajon Valley Union	No	(n/a)	No	(n/a)	(619) 441-5741	518	27	19.5	71.8%	267 (51.5%)	5 (1.0%)	186 (35.9%)	15 (2.9%)	6 (1.2%)	4 (0.8%)	35 (6.8%)	40.4	1490^th of 2740 public middle schools	45.6%		37	1581^st of 2761 public middle schools	42.7%	91		36.3			36.3				35.7	48.2	45.9		43.5				19.4	20.2	31.4		24.2			$22,427	$1,156	$21,271
El Cajon Valley High	Public	9-12	1035 East Madison Ave.	El Cajon	92021	San Diego County	Grossmont Union High	No	(n/a)	No	(n/a)	(619) 407-4711	1,701	82	20.7	88.8%	633 (37.2%)	157 (9.2%)	692 (40.7%)	120 (7.1%)	1 (0.1%)	7 (0.4%)	90 (5.3%)	19.6	1660^th of 2135 public high schools	22.2%		23.2	1629^th of 2162 public high schools	24.7%	31			17.6	0.0	16.3							21.6	21.6							9.7	9.7			$21,157	$1,789	$19,368

Cities Near Zip Code 92021

City	Distance	# of Schools	Statewide Rank
El Cajon	1.58 mi	52	584^th
Lakeside	1.74 mi	15	356^th
Santee	4.25 mi	12	177^th
Alpine	5.04 mi	7	239^th
La Mesa	5.61 mi	21	332^nd

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.