Summary:
ZIP code 95003 has two high schools serving grades 9–12: Aptos High and Delta Charter. In 2025–2026, their simple average proficiency was 59% in English language arts (ELA), above California’s 49%, but 23% in math and 23% in science, below state results of 38% and 36%. The most important area-wide finding is that ELA is the relative strength, while math and science results lag the state.
The schools have sharply different subject strengths: Delta Charter leads in ELA, with 62% proficient compared with 56% at Aptos High and 49% statewide. Aptos High is much stronger in math, at 36% versus 10% at Delta Charter, and in science, at 29% versus 18%; both schools are below the state in those subjects. Graduation rates are high at both schools—97% at Aptos High and 92% at Delta Charter, compared with 88% statewide—but chronic absenteeism is also higher than the state at both: 26% and 35%, respectively, versus 18%.
Recent progress is mixed by subject. From 2024–2025 to 2025–2026, ELA proficiency rose 10 points at Aptos High and 38 points at Delta Charter; math also improved at both, while science fell 7 points at Aptos High and rose 2 points at Delta Charter. SchoolDigger’s overall ranking moved down for Aptos High, from the 75th to the 66th percentile, and up for Delta Charter, from the 31st to the 40th. As context, in 2024–2025, 48% of Aptos High students and 39% of Delta Charter students were free/reduced lunch eligible; student–teacher ratios were 21.9:1 and 13.2:1, respectively. Delta Charter enrolls 113 students, so its results may be more sensitive to the number tested.
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