Lester R Arnold High School

Set in COMMERCE CITY, Colorado, Lester R Arnold High School is a micro-enrollment high school, operated by School District N. 14 in the county of Adams & State of Colo. It teaches 184 students across grades 9 through 12. By comparison, Colorado's public schools average about 627 students each, so Lester R Arnold High School sits 71% below that benchmark.

Within School District N. 14 in the county of Adams & State of Colo, which oversees 12 schools and 5,221 students, Lester R Arnold High School is one campus in the system.

On demographics, Lester R Arnold High School reports that 86% of students identify as Hispanic, making the school strongly Hispanic-majority. Beyond that, the school reports 11% White. By comparison, Adams County as a whole is about 43% Hispanic, so the school skews noticeably more Hispanic than its surroundings.

In terms of school funding signals, Staff filings list 9 full-time-equivalent teachers, which works out to roughly 20.4:1 students per teacher. The state averages around 16.9:1, so this campus is higher than the state norm typical. Roughly 89% of students at Lester R Arnold High School qualify for free or reduced-price lunch, often used as a Title I proxy. By comparison, Adams County runs at roughly 62%, so the school's eligibility rate is higher than the surrounding baseline.

In the broader community, ACS estimates for Adams County put median household income runs about $94,571, roughly 29% of adults have completed at least a four-year degree, and roughly 7% of residents live below the federal poverty line. Across Adams County's 171 public schools (combined enrollment of about 87,938 students), Lester R Arnold High School is one campus in the mix.

Nearest neighbor: Adams City High School, around 0.3 miles off. Within five miles, there are 8 other public schools.

Geographically, the school is in an inner-city area.

Five-year trend. Over the past 7-year window, the student count ticked down 19%: 227 students in 2018 compared to 184 in 2025. Hispanic enrollment moved from 81% to 86% across the same window. The student-to-teacher ratio narrowed from 25.2:1 in 2018 to 20.4:1 today.

Within the allk12 community for this school, posts here usually surface around science fair prep, picture-day reminders, and bus-route questions. Contributors range from current parents to recent graduates and teachers.