La Costa Canyon High

La Costa Canyon High operates as a heavily attended senior high in Carlsbad, California, part of San Dieguito Union High. Current enrollment sits at 1,774 students spanning grades 9 through 12. Enrollment runs roughly 112% above the state mean of about 838.

Across the 10 schools in San Dieguito Union High (12,026 students total), La Costa Canyon High accounts for its share of the district's footprint.

For racial and ethnic makeup, La Costa Canyon High records that 69% of the student body identifies as White; the rest consists of 18% Hispanic, 7% multiracial, 4% Asian. The wider county runs roughly 48% White, putting the school's mix noticeably more White than the area baseline.

Looking at the economic backdrop, On paper, La Costa Canyon High has 80 full-time-equivalent teachers, translating to a class-load average of around 22.1:1. That figure is higher than the state norm's 18.2:1 average. An estimated 18% of students are eligible for free or reduced-price lunch, often used as a Title I proxy. By comparison, San Diego County runs at roughly 54%, so the school's eligibility rate is lower than the surrounding baseline.

On a residual basis (actual vs predicted given the student mix), La Costa Canyon High tracks the demographic baseline. The model predicts 68.6% given the school's FRL share; actual proficiency is 54.9%.

Across the wider county, the surrounding county (San Diego County) shows 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. Across San Diego County's 766 public schools (combined enrollment of about 467,437 students), La Costa Canyon High is one campus in the mix.

Nearest neighbor: Mission Estancia Elementary, around 0.7 miles off. Counting just inside five miles, 8 other public schools cluster around La Costa Canyon High. On composite proficiency, La Costa Canyon High comes 9th of 9 in the immediate cluster, below the nearby-schools average of 72.8%.

The campus sits in an urban setting.

Trend over the last 7 years. Over the past 7-year window, the student count declined 8%: 1,935 students in 2018 compared to 1,774 in 2025. Over the same period, the White share contracted from 75% to 69%. The student-to-teacher ratio narrowed from 23.5:1 in 2018 to 22.1:1 today.

On the community side, members of the La Costa Canyon High community share and discuss school events, parent volunteer needs, and clubs. Parents, students, alumni, and staff are welcome to weigh in.