Twin Oaks High

Set in San Marcos, California, Twin Oaks High is an one-room-style four-year high school, run under San Marcos Unified. It serves 192 students across grades 9 through 12. That puts it 77% below the typical public school in California, which averages around 838 students.

Twin Oaks High is one of 19 schools operated by San Marcos Unified, a district that caters to 18,837 students overall.

On demographics, Twin Oaks High logs that the largest single group is Hispanic, at 63% of enrollment; the rest reads as 23% White, 6% Asian, 5% multiracial, 3% Black. That is considerably more Hispanic than the county at large, where the share is closer to 35%.

On the resource side, Staff filings list 19 full-time-equivalent teachers, which works out to roughly 10.0:1 students per teacher. The state averages around 18.2:1, so this campus is tighter than the state norm typical. An estimated 56% of students are eligible for free or reduced-price lunch, a number frequently used as a low-income enrollment indicator.

In the broader community, the surrounding county (San Diego County) reports that median household income runs about $106,268, roughly 43% of adults have completed at least a four-year degree, and roughly 7% of residents live below the federal poverty line. Twin Oaks High is one of 766 public schools in San Diego County (combined enrollment of about 467,437 students).

Foothills High is the nearest neighboring public school, about 0.0 miles from this campus. 8 of the 8 nearest public schools sit inside a five-mile radius.

Twin Oaks High operates from a commuter-belt location.

Five-year trend. Over the past 7-year window, the student count climbed 16%: 166 students in 2018 compared to 192 in 2025. Black enrollment moved from 7% to 3% across the same window. Class-load math has fell: from 12.1:1 in 2018 to 10.0:1 in 2025.

On this page, members of the Twin Oaks High community share and discuss fundraisers, lost-and-found posts, and report-card season. Posting is open to anyone connected to the school.