Castille Elementary

Castille Elementary is one of the medium-sized elementary schools in Mission Viejo, California, part of Capistrano Unified, with 482 students on its rolls from grades K through 5.

Within Capistrano Unified, which oversees 58 schools and 40,251 students, Castille Elementary is one campus in the system.

On demographics, Castille Elementary shows that 52% of students identify as White, with the remaining enrollment distributed across several groups. Beyond that, the school reports 20% Hispanic, 18% multiracial, 8% Asian. By comparison, Orange County as a whole is about 43% White, so the school skews considerably more White than its surroundings.

In terms of school funding signals, Castille Elementary reports 21 full-time-equivalent teachers, putting the student-to-teacher ratio at about 23.0:1. That tracks the state average closely. Roughly 28% of students at Castille Elementary qualify for free or reduced-price lunch, often used as a Title I proxy. By comparison, Orange County runs at roughly 55%, so the school's eligibility rate is meaningfully below the surrounding baseline.

On a demographically-adjusted basis, Castille Elementary ranks in the top 10% of California public schools. The BeatsExpectations model, a per-state regression of composite proficiency on FRL share, predicts schools with this student profile to land around 63.1%; Castille Elementary posts 80.2%, +17.2 points above that line.

Around the school, community-level numbers for Orange County indicate the typical household earns roughly $116,289 per year, about 44% of the adult population holds a bachelor's degree or above, and roughly 7% of residents live below the federal poverty line. Across Orange County's 649 public schools (combined enrollment of about 430,458 students), Castille Elementary is one campus in the mix.

Nearest neighbor: Montevideo Elementary, around 0.6 miles off. 8 of the 8 nearest public schools sit inside a five-mile radius. Among the 6 schools in that immediate cluster with test data (this one included), Castille Elementary ranks 1st on composite proficiency, above the local average of 61.8%.

The school occupies a residential site.

Five-year trend. Looking back 7 years, enrollment at Castille Elementary has edged down 15%, going from 567 students in 2018 to 482 in 2025. Over the same period, the White share decreased from 61% to 52%. Class-load math has narrowed: from 28.4:1 in 2018 to 23.0:1 in 2025.

Within the allk12 community for this school, posts here usually surface around open house dates, ride-share offers, and field-trip permission slips. Contributors range from current parents to recent graduates and teachers.