Summary:
Zip code 94402 includes five elementary schools in San Mateo, serving 340 to 489 students; four serve K–5, while Parkside Montessori serves K–8. In 2025–26, results varied widely: the gap between the highest- and lowest-scoring school was 67 percentage points in ELA, 61 in math, and 60 in science. Baywood Elementary and Parkside were above state results in all three subjects, while Sunnybrae Elementary and San Mateo Park Elementary were below state results in all three. The most important takeaway is that school-level results differ substantially, so a single area-wide picture would hide meaningful differences.
Parkside led all-grades ELA at 71%, compared with 49% statewide; Baywood led math at 66% and science at 60%, versus 38% and 36% statewide. San Mateo Park was lowest in every subject, with 4% in ELA, 6% in math, and 0% in science—46, 33, and 36 points below state results, respectively. Grade-level leaders vary: Baywood led grade 3 ELA and math, Highlands led grade 4 math and narrowly led grade 4 ELA, and Parkside led grade 5 ELA. Parkside’s K–8 span and strong older-grade results contribute to its all-grades ELA lead, so that figure is not directly comparable to the K–5 schools’ totals.
Across the five schools, the average ELA result fell 2 points from 2024–25 to 2025–26, math rose 1 point, and science fell 7 points. SchoolDigger’s 2025–26 statewide percentiles were 84 for Baywood, 78 for Parkside, 70 for Highlands, 9 for Sunnybrae, and 0 for San Mateo Park; these rankings provide context but are not test-score changes. Reported free/reduced lunch eligible shares for 2024–25 ranged from 18% at Parkside to 75% at Sunnybrae, while chronic absenteeism in 2025–26 ranged from 8% at Parkside to 27% at San Mateo Park. These are contextual differences, not explanations for test results.
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