Summary:
Zip code 95612 has one high school, Delta High, serving grades 10–12 and enrolling 196 students, so there are no other local high schools in this group to compare. The clearest academic concern is math: in 2025–2026, 14% of students were proficient, 24 percentage points below California’s 38%. The same gap appears in 11th grade, where 14% were proficient versus 32% statewide, an 18-point shortfall.
Delta High’s strongest result relative to the state was ELA: 56% proficient across grades, 7 points above California and 19 points above River Delta Joint Unified. Science was close to the state result at 34%, just 2 points below California, and 9 points above the district. Math was weakest compared with both: 14% proficient, 24 points below the state and 7 below the district. Other reported outcomes are stronger: Delta’s graduation rate was 100%, compared with 88% statewide, and chronic absenteeism was 9%, versus 18% statewide.
Results improved from 2024–2025 to 2025–2026, especially in ELA and science: proficiency rose 21 points in ELA, 17 in science, and 4 in math. The state-relative gaps narrowed in all three subjects, but math remained 25 points below California. SchoolDigger ranked Delta 1,075 of 2,137 schools, at the 50th percentile with 2 stars, up from the 30th percentile and 1 star in 2024–2025. For context, the school’s student-teacher ratio was 15.7 in 2024–2025, and 75% of students were free/reduced lunch eligible that year. With only one school listed and 196 students enrolled, the data do not support local school-to-school comparisons, and year-to-year results may be less stable.
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