Summary:
ZIP code 94121 has three K–5 elementary schools: Lafayette Elementary, Argonne Elementary and Alamo Elementary. All report results in ELA, mathematics and science for the same two school years, making their reported proficiency results comparable. In 2025–2026, the schools’ average proficiency was 67% in ELA, 67% in mathematics and 61% in science, compared with state results of 49%, 38% and 36%, respectively. Most important, every school exceeded the state result in all three subjects, with average advantages of 18 percentage points in ELA, 28 in mathematics and 25 in science.
Lafayette leads in ELA and mathematics, while Alamo leads in science. Lafayette recorded 75% in both ELA and mathematics; those results were 16 and 15 percentage points above Argonne, the lowest school in those subjects. Alamo’s 72% in science was 19 points above Argonne, which had the lowest science result at 53%. Argonne’s results were 59% in ELA and 60% in mathematics, but still exceeded the state by 10 and 22 points. The school-to-school spread is meaningful: the top-to-bottom difference is 16 points in ELA, 15 in mathematics and 19 in science.
Average results declined year over year across the three schools—by 1 percentage point in ELA, 3 in mathematics and 2 in science—even as state results rose by about 0, 1 and 3 points, respectively. There are exceptions: Lafayette improved 4 points in ELA and 5 in mathematics, while Alamo’s science result rose 1 point. SchoolDigger ranks Lafayette highest among the three at the 91st percentile with five stars, followed by Alamo at the 86th percentile and Argonne at the 80th, each with four stars. As context, 2024–2025 free/reduced lunch eligible shares were 30% at Lafayette, 41% at Alamo and 38% at Argonne; student-teacher ratios were 22.8, 23.2 and 21.7, respectively. These are context measures, not explanations for school results; California provides free meals statewide.
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