San Marino High

San Marino High is a medium-sized four-year high school in San Marino, California, part of San Marino Unified. The school serves 886 students in grades 9 through 12.

San Marino High is one of 4 schools operated by San Marino Unified, a district that enrolls 3,083 students overall.

In terms of who attends, San Marino High records that the largest single group is Asian, at 61% of enrollment. Beyond that, the school records 18% White, 11% multiracial, 9% Hispanic. By comparison, Los Angeles County as a whole is about 15% Asian, so the school skews noticeably more Asian than its surroundings.

Looking at the economic backdrop, The school currently runs with 43 full-time-equivalent teachers, for a student-teacher ratio near 20.4:1. Statewide, the average ratio sits near 18.2:1, putting San Marino High higher than the state norm the norm. About 12% of enrolled students meet the income threshold for free or reduced-price lunch, a number frequently used as a low-income enrollment indicator. By comparison, Los Angeles County runs at roughly 70%, so the school's eligibility rate is meaningfully below the surrounding baseline.

On a residual basis (actual vs predicted given the student mix), San Marino High is in the OUTPERFORMING tier of the BeatsExpectations model, which fits a per-state line through proficiency and FRL share. Schools with this campus's poverty mix typically land near 72.7%; this one delivers 90.8%, a residual of +18.1 points.

In the area at large, census data for Los Angeles County shows median household earnings sit near $90,112, 36% of adults hold a bachelor's degree or higher, and census figures put the poverty rate at about 10%. San Marino High is one of 2244 public schools in Los Angeles County (combined enrollment of about 1,265,907 students).

Nearest neighbor: Carver Elementary, around 0.5 miles off. Within five miles, there are 8 other public schools. Ranking that nearby cluster on reported proficiency puts San Marino High at 1st of 9; the average score across the group is 71.8%.

The school occupies a suburban site.

Five-year trend. Looking back 7 years, enrollment at San Marino High has decreased 21%, going from 1,123 students in 2018 to 886 in 2025. White enrollment moved from 25% to 18% across the same window.

In the discussion threads here, recent activity here tends to focus on open house dates, ride-share offers, and field-trip permission slips. Anyone with firsthand experience at this school can post or comment.