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Best Elementary Schools in Zip Code 93063

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

2,421

Students

Top rankedBig Springs Elementary1050^th of 5,817 California elementary schools

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Biggest riser

Knolls Elementary up 232 spots statewide this year

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Smallest classes

Knolls Elementary 17.6 students per teacher

SchoolDigger ratings

4★

3★

1★

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Summary:

Seven elementary schools in ZIP code 93063 serve kindergarten through grade 5 in Simi Valley, within Simi Valley Unified. In 2025–2026, their average results were about 47% in English language arts (ELA), 43% in math, and 36% in science; compared with California, the group was stronger in math, slightly behind in ELA, and about even in science. The most important finding is that results vary widely from school to school, with one clear leader alongside schools with substantially lower scores.

Big Springs stood out in 2025–2026, leading all three subjects with 66% in ELA, 59% in math, and 62% in science—about 17, 21, and 26 percentage points above state results, respectively. At the other end, Knolls had the lowest ELA score (25%) and science score (5%), while Santa Susana had the lowest math score (22%) and the next-lowest ELA score (28%). SchoolDigger’s statewide rankings also placed Big Springs highest, at the 82nd percentile with 4 stars; Santa Susana was at the 19th percentile and Knolls at the 26th, both with 1 star.

From 2024–2025 to 2025–2026, the seven-school average fell about 2 percentage points in ELA, rose about 3 points in math, and fell about 2 points in science. Individual results differed: Knolls’ math score rose 18 points even as its science score fell 15, while Big Springs’ science score climbed 13 points. SchoolDigger’s three-year rankings show Big Springs rising from the 77th to the 82nd percentile and Santa Susana declining from the 33rd to the 19th. Income figures are reported as free/reduced lunch eligible (FRL), 2024–2025: shares ranged from 35% at Big Springs to 68% at Santa Susana. Big Springs also had a student–teacher ratio of 23.2, while Knolls had the group’s lowest ratio, 17.6; these figures provide context, not an explanation for scores. Grade-level differences matter too: Knolls’ grade 3 math result was 59%, well above the state’s 47%, despite its lower all-grades math result.

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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 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 All Grades	Smarter Balanced Assessments Mathematics 3rd Grade	Smarter Balanced Assessments Mathematics 4th Grade	Smarter Balanced Assessments Mathematics 5th 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
Big Springs Elementary	Public	K-5	3401 Big Springs Ave.	Simi Valley	93063	Ventura County	Simi Valley Unified	No	(n/a)	No	(n/a)	(805) 520-6710	441	19	23.2	35.1%	235 (53.3%)	3 (0.7%)	149 (33.8%)	39 (8.8%)	0 (0.0%)	2 (0.5%)	13 (2.9%)	81.9	1050^th of 5817 public elementary schools	81.9%		77.9	1244^th of 5857 public elementary schools	78.8%	194	62.0	62.0	80.8	52.9	63.4	65.9	71.2	58.6	47.9	59.4	≥ 98%		$15,668	$800	$14,868
Garden Grove Elementary	Public	K-5	2250 North Tracy Ave.	Simi Valley	93063	Ventura County	Simi Valley Unified	No	(n/a)	No	(n/a)	(805) 520-6700	283	15	18.8	59.7%	91 (32.2%)	7 (2.5%)	156 (55.1%)	19 (6.7%)	1 (0.4%)	0 (0.0%)	9 (3.2%)	58	2156^th of 5817 public elementary schools	62.9%		57.6	2194^th of 5857 public elementary schools	62.5%	38	37.5	37.5	47.5	54.8	59.4	53.4	35.0	58.1	34.4	41.8	≥ 98%		$19,613	$852	$18,761
Katherine Elementary	Public	K-5	5455 Katherine St.	Simi Valley	93063	Ventura County	Simi Valley Unified	No	(n/a)	No	(n/a)	(805) 520-6780	300	13	23.0	52.7%	113 (37.7%)	5 (1.7%)	138 (46.0%)	23 (7.7%)	1 (0.3%)	0 (0.0%)	20 (6.7%)	55.6	2295^th of 5817 public elementary schools	60.5%		53.7	2388^th of 5857 public elementary schools	59.2%	93	43.8	43.8	42.0	44.1	54.2	47.0	46.0	41.2	39.6	42.4	97%	0%	$16,163	$857	$15,306
Knolls Elementary	Public	K-5	6334 Katherine Rd.	Simi Valley	93063	Ventura County	Simi Valley Unified	No	(n/a)	No	(n/a)	(805) 520-6735	212	12	17.6	56.1%	85 (40.1%)	3 (1.4%)	103 (48.6%)	11 (5.2%)	0 (0.0%)	1 (0.5%)	9 (4.2%)	25.9	4313^th of 5817 public elementary schools	25.9%		23.5	4545^th of 5857 public elementary schools	22.4%	232	5.0	5.0	33.3	24.2	15.0	25.0	59.3	27.3	10.0	33.8	94%	0%	$20,310	$929	$19,381
Santa Susana Elementary	Public	K-5	4300 Apricot Rd.	Simi Valley	93063	Ventura County	Simi Valley Unified	No	(n/a)	No	(n/a)	(805) 520-6765	312	16	19.4	67.6%	58 (18.6%)	2 (0.6%)	226 (72.4%)	22 (7.1%)	0 (0.0%)	0 (0.0%)	4 (1.3%)	21.5	4686^th of 5817 public elementary schools	19.4%		26.6	4263^rd of 5857 public elementary schools	27.2%	423	22.5	22.5	22.2	34.5	26.5	28.3	20.0	29.3	16.3	22.4	97%	0%	$18,832	$2,248	$16,584
Township Elementary	Public	K-5	4101 Township Ave.	Simi Valley	93063	Ventura County	Simi Valley Unified	No	(n/a)	No	(n/a)	(805) 520-6770	521	23	22.6	43.2%	312 (59.9%)	7 (1.3%)	157 (30.1%)	21 (4.0%)	1 (0.2%)	0 (0.0%)	23 (4.4%)	63.8	1892^nd of 5817 public elementary schools	67.5%		70.7	1571^st of 5857 public elementary schools	73.2%	321	45.1	45.1	53.0	44.0	62.2	53.3	48.2	46.7	43.9	46.3	≥ 99%		$15,779	$768	$15,011
White Oak Elementary	Public	K-5	2201 Alscot Ave.	Simi Valley	93063	Ventura County	Simi Valley Unified	No	(n/a)	No	(n/a)	(805) 520-6617	352	15	23.4	43.8%	141 (40.1%)	6 (1.7%)	151 (42.9%)	34 (9.7%)	0 (0.0%)	0 (0.0%)	20 (5.7%)	71.2	1519^th of 5817 public elementary schools	73.9%		74.2	1416^th of 5857 public elementary schools	75.8%	103	39.1	39.1	56.9	62.3	58.7	59.3	60.8	60.4	40.6	53.0	≥ 98%		$16,671	$800	$15,871

Cities Near Zip Code 93063

City	Distance	# of Schools	Statewide Rank
Simi Valley	0.62 mi	53	359^th
West Hills	5.41 mi	9	232^nd
Chatsworth	5.86 mi	11	381^st
Canoga Park	6.86 mi	18	625^th
Oak Park	6.86 mi	8	55^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.