San Luis High School

Set in San Luis, Arizona, San Luis High School is a well-populated four-year high school, overseen by Yuma Union High School District (4507). It instructs 2,682 students across grades 9 through 12. By comparison, Arizona's public schools average about 631 students each, so San Luis High School sits 325% above that benchmark.

Yuma Union High School District (4507) runs 8 schools in total, collectively educating 11,217 students. San Luis High School is one of those campuses.

On demographics, San Luis High School lists that the student body is overwhelmingly Hispanic (100%). By comparison, Yuma County as a whole is about 65% Hispanic, so the school skews noticeably more Hispanic than its surroundings.

On the resource side, Staff filings list 104 full-time-equivalent teachers, which works out to roughly 25.8:1 students per teacher. Statewide, the average ratio sits near 20.2:1, putting San Luis High School higher than the state norm the norm.

In the surrounding community, community-level numbers for Yuma County indicate median household earnings sit near $62,876, roughly 17% of adults have completed at least a four-year degree, and census figures put the poverty rate at about 13%. In all, Yuma County runs 89 public schools (combined enrollment of about 38,800 students), of which San Luis High School is one.

Southwest Jr. High School is the nearest neighboring public school, about 0.4 miles from this campus. Within five miles, there are 8 other public schools.

The campus sits in a small-town setting.

Looking at the recent track record. San Luis High School's enrollment has declined 13% since 2018, when it stood at 3,074 (now 2,682). Class-load math has narrowed: from 31.6:1 in 2018 to 25.8:1 in 2025.

Within the allk12 community for this school, members of the San Luis High School community share and discuss school events, parent volunteer needs, and clubs. Parents, students, alumni, and staff are welcome to weigh in.