Colony High

Colony High operates as a big 9-12 campus in Ontario, California, run under Chaffey Joint Union High. Current enrollment sits at 2,109 students spanning grades 9 through 12. Compared to the state average of about 838 students per school, that is 152% larger than typical.

Within Chaffey Joint Union High, which oversees 11 schools and 22,040 students, Colony High is one campus in the system.

For racial and ethnic makeup, Colony High shows that Hispanic students make up the majority at 66%; the rest is composed of 13% Black, 9% Asian, 7% White, 3% multiracial. The wider county runs roughly 55% Hispanic, putting the school's mix noticeably more Hispanic than the area baseline.

On the resource side, Staff filings list 81 full-time-equivalent teachers, which works out to roughly 25.9:1 students per teacher. That figure is higher than the state norm's 18.2:1 average. Roughly 70% of students at Colony High qualify for free or reduced-price lunch, a commonly cited indicator of low-income enrollment.

After controlling for student poverty, Colony High sits in the middle band of the BeatsExpectations distribution. Schools with this campus's student mix typically land near 38.0%; this one delivers 38.6%.

Around the school, community-level numbers for San Bernardino County indicate median household income runs about $85,478, about 23% of the adult population holds a bachelor's degree or above, and census figures put the poverty rate at about 11%. Colony High is one of 583 public schools in San Bernardino County (combined enrollment of about 393,648 students).

Nearest neighbor: Creek View Elementary, around 0.5 miles off. Within five miles, there are 8 other public schools. Ranking that nearby cluster on reported proficiency puts Colony High at 5th of 9; the average score across the group is 38.5%.

The campus sits in an urban setting.

Looking at the recent track record. Colony High's enrollment has shrank 3% since 2018, when it stood at 2,173 (now 2,109). Over the same period, the Hispanic share fell from 72% to 66%. Class-load math has grew: from 23.6:1 in 2018 to 25.9:1 in 2025.

On the community side, members of the Colony High community share and discuss fundraisers, lost-and-found posts, and report-card season. Contributors range from current parents to recent graduates and teachers.