Twin Oaks High

As a small high school, Twin Oaks High serves students in San Marcos, California. The grade span is 9 through 12, and enrollment is 192 students. Average enrollment for high schools in California is about 838, so this school runs 77% smaller than that.

Twin Oaks High is one of the 19 schools that make up San Marcos Unified (18,837 students in total).

Hispanic students are the majority at Twin Oaks High, with 63% of enrollment. After that, the student body is 23% White, 6% Asian, 5% multiracial, and 3% Black. Among all residents of San Diego County, the Hispanic share is about 35%. The school's diversity index is 55%, meaning two students picked at random have a 55% chance of belonging to different racial or ethnic groups.

Staffing totals 19.2 full-time-equivalent teachers, and the student-to-teacher ratio is 10.0:1. On average, high schools in California have 18.2:1, compared with 10.0:1 here. The free or reduced-price lunch rate at Twin Oaks High is 56%. For comparison, public schools in San Diego County average 54%.

San Diego County has about 3,288,774 residents, and the median household income is $106,268, the share of adults with a bachelor's degree or higher is 43%, and about 7% of people live in poverty. Besides Twin Oaks High, San Diego County has 765 other public schools.

The nearest other public school, Foothills High, is less than a tenth of a mile away. Inside a five-mile radius, there are at least 8 other public schools.

The NCES locale for Twin Oaks High is Suburb: Large, which covers schools in a suburban area outside a principal city, within an urbanized area with a population of 250,000 or more.

Enrollment was 133 in 2020-21 and 192 in 2024-25. Large swings like this can come from changes to the grades a school serves.

If you have questions about enrollment questions, class placement, and PTA news at Twin Oaks High, you can post them here. Posting is open to anyone connected to the school.