Summary:
Zip code 92307 has one listed high school, Granite Hills High, serving grades 9–12 with 1,791 students and a 22.3:1 student–teacher ratio, in Apple Valley Unified. Graduation is comparatively strong at 94%, above the state’s 88%, while chronic absenteeism is high at 35%, compared with 18% statewide and 27% in the district. The most important academic finding is a sharp subject gap: ELA is above the state, but math is 22 percentage points below it.
Because it is the only school listed, Granite Hills High cannot be meaningfully ranked against local peers. Compared with California in 2025–26, its strongest result is ELA: 54% of students met the standard, versus 49% statewide, a 5-point advantage. Math is the clearest weakness, at 16% versus 38% statewide, a 22-point deficit; science is also below the state, at 25% versus 36%, an 11-point gap. Compared with the district, the school is 23 points higher in ELA, 2 points lower in math, and 3 points higher in science.
Scores improved from 2024–25 to 2025–26, especially in ELA: results rose from 45% to 54%, a 9-point gain, while math increased 1 point and science 4 points. ELA moved from below the state to above it, but the math gap remains large. SchoolDigger ranks the school 1,188th of 2,137 statewide, in the 44th percentile with 2 stars; its percentile was 45 in 2023–24 and 40 in 2024–25, so the latest standing improved from the prior year but remains below the earlier one. As context, 74% of students were free/reduced lunch eligible in 2024–25; this figure, enrollment, and the student–teacher ratio do not establish what explains the results.
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