Summary
Stagg Senior High is a grades 9–12 school in Stockton, California, serving 1,677 students in Stockton Unified. Its graduation rate reached 94% in 2025–2026, but chronic absenteeism was also high: 46%, compared with 31% in the district and 18% statewide. The clearest academic concern is mathematics: only 10% of students were proficient, versus 38% statewide.
ELA is Stagg’s strongest subject relative to its other results, while math is its weakest compared with the district, state, and nearby schools. In 2025–2026, 47% were proficient in ELA—3 points below the state but 17 points above the district. Science proficiency was 22%, 14 points below the state but 3 points above the district. Stagg’s math result was 28 points below the state and 8 points below the district. Among eight nearby schools with results, Stagg’s ELA average was 8 points below their average; its math and science results were each 16 points below the nearby average. It scored above two of those schools in each subject.
Results have risen overall since 2022–2023, but not steadily: ELA increased from 35% to 47% and science from 6% to 22%, while math rose from 5% to 10%; math’s gap to the state narrowed by just 1 point. SchoolDigger placed Stagg at the 34th percentile with 2 stars in 2025–2026, up from the 26th percentile the year before, though six of eight nearby schools with rankings placed higher. Its student-teacher ratio was 20.4 in 2024–2025, below the nearby average of 22.3. Stagg’s reported free/reduced lunch eligible measure was 75% in 2024–2025, compared with a nearby-school average of 70; these are context measures, not explanations for test results. SchoolDigger’s statewide effectiveness ranking for Special Education Students was at the 15th percentile in 2025–2026, down from the 31st percentile in 2023–2024. For English Language Learner Students, its latest supplied ranking was higher: the 60th percentile in 2023–2024, compared with the school’s overall 34th percentile that year.
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