Which Yuma County school had largest enrollment in 2025-26 school year?

San Luis High School had the highest enrollment among Yuma County schools, welcoming 2,652 students during the 2025-26 academic year, according to the Arizona Department of Education.

Of all the students welcomed in the 2025-26 school year, 51.5% were boys, and 48.5% were girls.

The most represented ethnicity among San Luis High School students was Asian, accounting for 0% of the student population.

Among the 68 schools in Yuma County, Cibola High School ranked second in enrollment numbers with 2,338 students, while Gila Ridge High School welcomed 2,209 students and ranked third in the 2025-26 school year.

San Luis High School is part of Yuma Union High School District, which roughly covers schools within Yuma County and has a main office in Yuma.

In the previous school year, Desert View Online School had the highest number of students among Yuma County schools.

Arizona ranks dead last in educational success among U.S. states, according to World Population Review, which graded states based on K–12 performance, funding, higher education, and safety.

Arizona’s K-12 enrollment is shifting amid a declining school-aged population, projected to drop by 40,000 by 2028, according to the Common Sense Institute.

Information in this story was obtained from the Arizona Department of Education. The source data can be found here.