San Dimas High

Set in San Dimas, California, San Dimas High is a mid-tier 9-12 campus, overseen by Bonita Unified. It caters to 1,235 students across grades 9 through 12. By comparison, California's public schools average about 838 students each, so San Dimas High sits 47% bigger than that benchmark.

San Dimas High is one of 15 schools operated by Bonita Unified, a district that hosts 9,905 students overall.

Demographically, San Dimas High records that 60% of the student body identifies as Hispanic. Beyond that, the school logs 18% White, 11% Asian, 9% multiracial, 3% Black. The wider county runs roughly 48% Hispanic, putting the school's mix noticeably more Hispanic than the area baseline.

In terms of school funding signals, San Dimas High records 58 full-time-equivalent teachers, putting the student-to-teacher ratio at about 21.5:1. That figure is higher than the state norm's 18.2:1 average. Around 38% of the student body qualifies for free or reduced-price meals, often used as a Title I proxy. That share is lower than Los Angeles County's rate of about 70%.

After controlling for student poverty, San Dimas High tracks the demographic baseline. The model predicts 57.1% given the school's FRL share; actual proficiency is 62.5%.

Zooming out to the county, community-level numbers for Los Angeles County indicate median household earnings sit near $90,112, roughly 36% of adults have completed at least a four-year degree, and census figures put the poverty rate at about 10%. Across Los Angeles County's 2244 public schools (combined enrollment of about 1,265,907 students), San Dimas High is one campus in the mix.

Adult Transition Program is the nearest neighboring public school, about 0.0 miles from this campus. Within five miles, there are 8 other public schools. Ranking that nearby cluster on reported proficiency puts San Dimas High at 4th of 6; the average score across the group is 60.5%.

The campus sits in a commuter-belt setting.

Over the past 7-year window. Looking back 7 years, enrollment at San Dimas High has fell 10%, going from 1,375 students in 2018 to 1,235 in 2025. Over the same period, the White share fell from 26% to 18%. Class-load math has tightened: from 25.7:1 in 2018 to 21.5:1 in 2025.

On the community side, the feed for San Dimas High typically covers science fair prep, picture-day reminders, and bus-route questions. Posting is open to anyone connected to the school.