Summary
South San Francisco High is a public high school in South San Francisco, California, serving grades 9–12 in the South San Francisco Unified district, with 1,239 students. Its 2025–26 graduation rate was 94%, above the district’s 91% and the state’s 88%, while chronic absenteeism was 21%, higher than both. The clearest concern is math: just 19% of students were proficient, far below the state’s 38% and the district’s 40%.
English language arts (ELA) is the school’s strongest subject relative to local and state results. Proficiency was 56%, about 7 percentage points above both the district and state; among the school and eight nearby schools with scores, it ranked fifth. Math and science are weaker: each ranked seventh of nine nearby schools. Math was 10 points below the nearby-school average, 20 points below the state, and 21 points below the district. Science proficiency was 32%, 5 points below the nearby-school average, 4 below the state, and 6 below the district. The available 11th-grade ELA result is a caveat: at 56%, it was below the state’s 57% and the district’s 61%.
Results have shifted over time, with math worsening most: proficiency fell 6 percentage points from 2022–23 to 2025–26, while the state’s result rose. ELA dipped 2 points, and science rose 3 points over those four years, though it still trails the state. SchoolDigger’s overall standing declined from the 74th percentile and 4 stars in 2023–24 to the 58th percentile and 3 stars in 2025–26. Its student-teacher ratio was 18.2 in 2024–25, close to the nearby-school average. That year, 42% of students were reported as free/reduced lunch eligible, 7 percentage points above the nearby-school average. SchoolDigger’s subgroup rankings also show a notable decline for Hispanic students: the group’s statewide effectiveness percentile fell from 63 in 2023–24 to 44 in 2025–26, compared with the school’s overall 58th percentile that latest year.
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