Summary:
High schools in zip code 95315 consist of one school, Delhi High, serving grades 9–12 with 710 students; with no other local high schools for comparison, its key picture is mixed: graduation is well above the state rate, while proficiency is below state results in all three tested subjects.
Delhi High is the area’s only school, so there is no local top or bottom school; compared with California, its strongest tested subject is ELA and its largest gaps are in math and science. In 2025–26, 44% of students were proficient in ELA, 5 percentage points below the state; math proficiency was 26%, 12 points below, and science was 24%, also 12 points below. The school’s graduation rate stands out positively: 99% versus 88% statewide, a 12-point advantage, while dropout was 0% versus 8% statewide. Graduation and dropout rates matched those of Delhi Unified. The school was above its district in ELA by 9 points and science by 6 points, but 1 point below it in math.
Results improved, especially in math: proficiency rose from 14% in 2024–25 to 26% in 2025–26, a 12-point gain, and the gap with the state narrowed by 11 points. ELA improved by about 1 point, with its state gap narrowing slightly from 5.1 to 4.9 points; science gained 5 points, while its state gap narrowed by 1 point. SchoolDigger’s statewide percentile ranking rose from 30 in 2023–24 to 45 in 2025–26, while its rating remained two stars in each of the three years shown. For context, the school’s student–teacher ratio was 17.9 in 2024–25, and 90% of students were eligible for free/reduced lunch that year; these are school-context figures, not evidence of what caused results. Because this area has only one listed high school, the data cannot show how it compares with local peers.
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