Summary:
ZIP code 93215 has four public high schools serving grades 9–12 in Delano Joint Union High School District. Three schools enroll between 1,221 and 1,394 students, while Valley High enrolls 71. The clearest takeaway is that Valley has a markedly weaker overall profile: its 2025–2026 proficiency was 27% in English language arts (ELA), 0% in math and 4% in science, while chronic absenteeism was 77% and graduation was 84%; at the other schools, graduation was 98% and absenteeism ranged from 14% to 22%.
Cesar E. Chavez High stands out for balanced test results, leading math at 41% and science at 42%, and placing second in ELA at 69%. Delano High leads ELA at 71%, about 2 percentage points ahead of Chavez. Robert F. Kennedy High is close behind in ELA at 69%, with 35% in math and 38% in science. All three larger schools are 20–22 points above California in ELA, but their math results range from 34% to 41%, compared with 38% statewide. Valley trails the other three schools’ average by 43 points in ELA, 36 in math and 34 in science. SchoolDigger ranks Chavez at the 77th percentile, Kennedy at the 71st, Delano at the 70th and Valley at the 18th.
Test scores improved from 2024–2025 to 2025–2026 at all three larger schools in every subject: their average rose 5 points in ELA, 6 in math and 6 in science, compared with state gains of about 0, 1 and 3 points. Valley’s ELA increased 5 points but math remained at 0%; no prior-year Valley science score was provided. SchoolDigger’s percentile ranking rose 6 points for Chavez and 1 for Delano, while Kennedy fell 3; Valley rose 12 points from a low starting point. Student-teacher ratios range from 20.8 to 22.5 at the larger schools, versus 11.6 at Valley. For 2024–2025, free/reduced lunch eligible figures were 86% at Chavez, 89% at Kennedy and 93% at Delano, providing context but not an explanation for outcomes. Valley’s small enrollment means its percentages may reflect a small group of students.
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