Rialto High

As a sprawling 9-12 campus in Rialto, California, Rialto High works with 2,623 students from grades 9 through 12, run under Rialto Unified. By comparison, California's public schools average about 838 students each, so Rialto High sits 213% larger than that benchmark.

Rialto High is one of 29 schools operated by Rialto Unified, a district that instructs 23,067 students overall.

For racial and ethnic makeup, Rialto High records that 91% of students identify as Hispanic, making the school strongly Hispanic-majority; the rest looks like 5% Black. The wider county runs roughly 55% Hispanic, putting the school's mix considerably more Hispanic than the area baseline.

On the resource side, Rialto High logs 114 full-time-equivalent teachers, putting the student-to-teacher ratio at about 22.9:1. Statewide, the average ratio sits near 18.2:1, putting Rialto High higher than the state norm the norm. An estimated 86% of students are eligible for free or reduced-price lunch, a number frequently used as a low-income enrollment indicator. By comparison, San Bernardino County runs at roughly 74%, so the school's eligibility rate is meaningfully above the surrounding baseline.

On a demographically-adjusted basis, Rialto High tracks the demographic baseline. The model predicts 28.5% given the school's FRL share; actual proficiency is 36.7%.

Across the wider county, community-level numbers for San Bernardino County indicate median household income runs about $85,478, 23% of adults hold a bachelor's degree or higher, and roughly 11% of residents live below the federal poverty line. Rialto High is one of 583 public schools in San Bernardino County (combined enrollment of about 393,648 students).

Nearest neighbor: William G. Jehue Middle, around 0.4 miles off. 8 of the 8 nearest public schools sit inside a five-mile radius. Ranking that nearby cluster on reported proficiency puts Rialto High at 3rd of 8; the average score across the group is 27.4%.

Rialto High operates from a high-density location.

Over the past 7-year window. Looking back 7 years, enrollment at Rialto High has declined 5%, going from 2,764 students in 2018 to 2,623 in 2025. Class-load math has tightened: from 24.8:1 in 2018 to 22.9:1 in 2025.

In the discussion threads here, recent activity here tends to focus on enrollment questions, classroom assignments, and PTA news. The community welcomes input from current and former families.