Jefferson High

Jefferson High is a mid-sized four-year high school in Daly City, California, operated by Jefferson Union High. The school serves 1,072 students in grades 9 through 12. By comparison, California's public schools average about 838 students each, so Jefferson High sits 28% bigger than that benchmark.

Jefferson High is one of 5 schools operated by Jefferson Union High, a district that educates 3,650 students overall.

On demographics, Jefferson High reports that the most-represented group is Hispanic (51%), with the rest of the student body spread across multiple groups. Other groups include 38% Asian, 4% White, 4% multiracial, 2% Black. By comparison, San Mateo County as a whole is about 25% Hispanic, so the school skews visibly more Hispanic than its surroundings.

Looking at the economic backdrop, On paper, Jefferson High has 55 full-time-equivalent teachers, translating to a class-load average of around 19.5:1. The state averages around 18.2:1, so this campus is higher than the state norm typical. Roughly 41% of students at Jefferson High qualify for free or reduced-price lunch, a commonly cited indicator of low-income enrollment.

With demographic context factored in, On a poverty-adjusted basis, Jefferson High sits in the bottom 10% statewide. Predicted proficiency from the FRL regression is roughly 55.0%; actual is 29.9%, a gap of -25.1 points.

In the broader community, ACS estimates for San Mateo County put the typical household earns roughly $158,855 per year, about 54% of the adult population holds a bachelor's degree or above, and roughly 4% of residents live below the federal poverty line. Across San Mateo County's 176 public schools (combined enrollment of about 82,403 students), Jefferson High is one campus in the mix.

Nearest neighbor: Thornton High, around 0.4 miles off. 8 of the 8 nearest public schools sit inside a five-mile radius. Among the 8 schools in that immediate cluster with test data (this one included), Jefferson High ranks 7th on composite proficiency, below the local average of 38.9%.

The school occupies an outer-ring site.

Looking at the recent track record. Jefferson High's enrollment has contracted 6% since 2018, when it stood at 1,144 (now 1,072). The Hispanic share of enrollment grew from 40% to 51% over that span. Class-load math has narrowed: from 22.6:1 in 2018 to 19.5:1 in 2025.

On allk12, posts here usually surface around sports schedules, lunch menu changes, and school spirit week. Posting is open to anyone connected to the school.