Summary:
ZIP code 90042 has 10 elementary schools: nine serve K–5, while Arroyo Seco Museum Science serves K–8. On average, the schools’ 2025–2026 results were about 1 percentage point below the state in ELA, but 4 points above it in math and 4 points above in science. The most important finding for families is how much results differ from school to school: the spread between the highest and lowest reported results is 43 points in ELA, 34 in math and 44 in science.
Richard Riordan Primary Center leads K–5 schools in all three subjects, with 68% proficient in ELA, 60% in math and 64% in science; its ELA result is 21 points above the other schools’ average. Arroyo Seco Museum Science has the highest math result, 58%, and the second-highest ELA result, 65%, though its K–8 grade span differs from the other schools’. San Pascual STEAM Magnet and Garvanza Elementary are also above the state in all three subjects. At the lower end, Annandale Elementary has 24% in both ELA and math; Yorkdale Elementary has the lowest reported science result, 19%, and results of 41% in ELA and 30% in math.
Across schools, average results rose by about 2 points in both ELA and math from 2024–2025 to 2025–2026, but six schools improved in each subject, so gains were not universal. San Pascual STEAM Magnet gained 12 points in ELA, and Garvanza Elementary gained 15 in math; Bushnell Way Elementary declined by 13 points in ELA and 7 in math. School context does not sort neatly by performance: student-teacher ratios range from 17.3 at Buchanan Street Elementary to 22.6 at San Pascual. All schools report free/reduced lunch eligible for school year 2024–2025, with reported percentages ranging from 66% to 89%; these are context, not an explanation of results. Annandale’s science result is suppressed, so it cannot be compared.
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