Summary
Deer Valley High is a large public high school serving grades 9–12 in Antioch, California, with 1,812 students. Its latest results show a sharp academic split: English language arts is near the state level, but math and science lag well behind. Graduation is comparatively strong, at 89% in 2025–26, above the state’s 88% and Antioch Unified’s 82%. The clearest concern for families is attendance: chronic absenteeism was 37%, compared with 18% statewide and 31% in the district.
Deer Valley High’s strongest tested subject is ELA: 50% of students were proficient in 2025–26, just above the state’s 49% and well above the district’s 28%. Math is the biggest state-level weakness: proficiency was 16%, compared with 38% statewide, though it was slightly above the district’s 15.5%. Science proficiency was 23%, below the state’s 36% but above the district’s 17%. Among nearby schools, Deer Valley ranked fifth of 11 in ELA and math, and fourth of 10 reporting science. It scored above the nearby-school average in each subject, but remained behind local leaders such as Heritage High and, in ELA and math, Dozier-Libbey Medical High.
Over time, math proficiency fell from 18% in 2022–23 to 16% in 2025–26, while the state’s score rose; the gap widened from 16 to 22 percentage points. Science rose from 22% to 23%, but its gap with the state also widened, from 8 to 13 points. ELA fell from 56% to 50%, narrowing the school’s lead over the state from 9 points to 1. SchoolDigger gives Deer Valley High a 40th-percentile statewide ranking and 2 stars in 2025–26, down 26 percentile points from 2015–16. Its 2024–25 student-teacher ratio was 23.0, compared with a nearby-school average of 17.8; 82.6% of students were free/reduced lunch eligible that year. One notable subgroup result is that SchoolDigger ranked how well the school serves English Language Learner Students at the 82nd percentile in 2023–24, compared with the school’s overall 43rd percentile that year. Nearby comparisons include continuation and alternative schools, which may serve different student populations.
Thank you for your feedback!