San Ysidro High

San Ysidro High is an expansive four-year high school in San Diego, California, one of the schools within Sweetwater Union High. The school hosts 1,941 students in grades 9 through 12. By comparison, California's public schools average about 838 students each, so San Ysidro High sits 132% larger than that benchmark.

Sweetwater Union High runs 28 schools in total, collectively educating 33,517 students. San Ysidro High is one of those campuses.

Demographically, San Ysidro High records that the student body is overwhelmingly Hispanic (89%); the rest breaks down as 3% White, 3% Asian, 2% Black. That is meaningfully more Hispanic than the county at large, where the share is closer to 35%.

Looking at school resources, The school lists 84 full-time-equivalent teachers, for a student-teacher ratio near 23.2:1. That figure is higher than the state norm's 18.2:1 average. About 78% of enrolled students meet the income threshold for free or reduced-price lunch, a commonly cited indicator of low-income enrollment. Set against San Diego County (around 54%), the school's rate is somewhat above typical.

With demographic context factored in, San Ysidro High performs roughly as the BeatsExpectations model predicts for a school with this FRL share. The predicted value is around 32.8%, the actual is 24.4%, a residual of -8.4 points.

In the surrounding community, community-level numbers for San Diego County indicate the typical household earns roughly $106,268 per year, 43% of adults hold a bachelor's degree or higher, and the poverty rate sits near 7%. San Ysidro High is one of 766 public schools in San Diego County (combined enrollment of about 467,437 students).

Nearest neighbor: Ocean View Hills, around 0.6 miles off. Counting just inside five miles, 8 other public schools cluster around San Ysidro High. Among the 9 schools in that immediate cluster with test data (this one included), San Ysidro High ranks 7th on composite proficiency, behind the local average of 29.9%.

The school occupies a rural site.

Over the past 7-year window. Looking back 7 years, enrollment at San Ysidro High has fell 22%, going from 2,498 students in 2018 to 1,941 in 2025. Class-load math has fell: from 24.7:1 in 2018 to 23.2:1 in 2025.

On this page, posts here usually surface around science fair prep, picture-day reminders, and bus-route questions. Anyone with firsthand experience at this school can post or comment.