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Best Elementary Schools in Zip Code 94404

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

1,722

Students

5-star schools

Top rankedBrewer Island Elementary446^th of 5,817 California elementary schools

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Biggest riser

Audubon Elementary up 335 spots statewide this year

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Summary:

Zip code 94404 has four K–5 elementary schools in the San Mateo-Foster City district: Foster City Elementary, Audubon Elementary, Beach Park Elementary and Brewer Island Elementary. All four exceeded California’s 2025–2026 proficiency rates in all-grade English, math and science, and SchoolDigger ranked them between the 89th and 92nd percentiles statewide. The clearest shared strength is math: the schools averaged 75% proficiency, compared with 38% statewide, a 37-point advantage.

Brewer Island led all-grade English at 74% and math at 77%, but its lead over the other schools’ averages was modest: 4 points in English and 3 in math. At the other end, Foster City had the lowest English result at 68%, while Audubon had the lowest math result at 73%; each was about 3–4 points below the other schools’ average, yet still above the state rate. Foster City narrowly led science at 63%, while Brewer Island was lowest at 62%, a gap of just 2 points across the group. Grade-level results offer a different comparison: Audubon led grade 3 in both English (77%) and math (84%).

Recent changes vary by subject and school. From 2024–2025 to 2025–2026, the group’s average rose 3 points in English and 10 in science, while math was essentially steady; the math margin over California narrowed by 1 point. Beach Park had the largest science increase, up 25 points, while Brewer Island fell 3 points in science. SchoolDigger’s three-year rankings also diverged: Foster City moved from the 94th to 90th percentile, Audubon from the 88th to 89th, Beach Park from the 87th to 91st, and Brewer Island stayed at the 92nd. Student-teacher ratios were fairly close, from 21.5 to 23.1. Free/reduced lunch eligible figures for 2024–2025 ranged from 12% at Foster City to 21% at Audubon; these are context, not explanations for results.

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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
Brewer Island Elementary	Public	K-5	1151 Polynesia Dr.	Foster City	94404	San Mateo County	San Mateo-Foster City	No	(n/a)	No	(n/a)	(650) 312-7532	306	14	21.8	18.6%	41 (13.4%)	4 (1.3%)	62 (20.3%)	154 (50.3%)	0 (0.0%)	3 (1.0%)	42 (13.7%)	93.5	446^th of 5817 public elementary schools	92.3%		92	546^th of 5857 public elementary schools	90.7%	100	61.7	61.7	70.5	75.0	75.0	73.6	77.8	85.0	71.7	77.2	91%	0%	$27,766	$26,442	$1,324
Audubon Elementary	Public	K-5	841 Gull Ave.	Foster City	94404	San Mateo County	San Mateo-Foster City	No	(n/a)	No	(n/a)	(650) 312-7500	445	20	22.2	20.9%	77 (17.3%)	6 (1.3%)	72 (16.2%)	220 (49.4%)	0 (0.0%)	5 (1.1%)	65 (14.6%)	90.2	638^th of 5817 public elementary schools	89.0%		83.8	973^rd of 5857 public elementary schools	83.4%	335	63.2	63.2	77.1	57.4	71.4	69.2	83.6	65.2	69.7	73.0	95%	0%	$23,378	$22,176	$1,202
Foster City Elementary	Public	K-5	461 Beach Park Blvd.	Foster City	94404	San Mateo County	San Mateo-Foster City	No	(n/a)	No	(n/a)	(650) 312-7522	624	29	21.5	12.0%	107 (17.1%)	3 (0.5%)	60 (9.6%)	374 (59.9%)	3 (0.5%)	7 (1.1%)	70 (11.2%)	90.9	594^th of 5817 public elementary schools	89.8%		92.3	522^nd of 5857 public elementary schools	91.1%	72	63.4	63.4	60.8	62.3	78.8	68.3	83.1	71.2	74.1	75.4	98%	0%	$25,312	$23,608	$1,704
Beach Park Elementary	Public	K-5	1058 Shell Blvd.	Foster City	94404	San Mateo County	San Mateo-Foster City	No	(n/a)	No	(n/a)	(650) 312-7490	347	15	23.1	14.7%	70 (20.2%)	3 (0.9%)	60 (17.3%)	175 (50.4%)	1 (0.3%)	3 (0.9%)	35 (10.1%)	92.2	523^rd of 5817 public elementary schools	91.0%		87.5	801^st of 5857 public elementary schools	86.3%	278	63.3	63.3	64.4	74.5	86.7	72.8	77.1	73.5	69.0	74.1	96%	0%	$22,182	$20,756	$1,426

Cities Near Zip Code 94404

City	Distance	# of Schools	Statewide Rank
Foster City	0.28 mi	6	56^th
Redwood City	1.09 mi	28	400^th
San Mateo	1.38 mi	23	293^rd
Belmont	1.61 mi	6	46^th
San Carlos	2.83 mi	11	28^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.