Troy High

Set in Fullerton, California, Troy High is a large four-year high school, part of Fullerton Joint Union High. It hosts 2,504 students across grades 9 through 12. By comparison, California's public schools average about 838 students each, so Troy High sits 199% bigger than that benchmark.

Troy High is one of 8 schools operated by Fullerton Joint Union High, a district that enrolls 12,597 students overall.

On demographics, Troy High shows that the largest single group is Asian at 52%, but no single group is in the majority; the rest breaks down as 28% Hispanic, 11% White, 7% multiracial. That is considerably more Asian than the county at large, where the share is closer to 22%.

On the income-and-resources front, On paper, Troy High has 108 full-time-equivalent teachers, translating to a class-load average of around 23.2:1. Statewide, the average ratio sits near 18.2:1, putting Troy High higher than the state norm the norm. An estimated 40% of students are eligible for free or reduced-price lunch, a commonly cited indicator of low-income enrollment. That share is south of Orange County's rate of about 55%.

Adjusting for the school's free-and-reduced-lunch share, Troy High 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 55.8%; Troy High posts 79.8%, +24.0 points above that line.

In the area at large, Orange County reports that the typical household earns roughly $116,289 per year, roughly 44% of adults have completed at least a four-year degree, and census figures put the poverty rate at about 7%. Across Orange County's 649 public schools (combined enrollment of about 430,458 students), Troy High is one campus in the mix.

Acacia Elementary is the nearest neighboring public school, about 0.2 miles from this campus. Within five miles, there are 8 other public schools. Ranking that nearby cluster on reported proficiency puts Troy High at 1st of 7; the average score across the group is 46.2%.

The campus sits in a suburban setting.

Over the past 7-year window. Over the past 7-year window, the student count fell 7%: 2,696 students in 2018 compared to 2,504 in 2025. The White share of enrollment declined from 15% to 11% over that span. Class-load math has pulled in: from 26.9:1 in 2018 to 23.2:1 in 2025.

Within the allk12 community for this school, the page collects discussion, questions, and updates around school events, parent volunteer needs, and clubs. The community welcomes input from current and former families.