Thornton High School

Thornton High School operates as a sprawling high school in THORNTON, Colorado, operated by Adams 12 Five Star Schools. Current enrollment sits at 1,439 students spanning grades 9 through 12. That puts it 130% bigger than the typical public school in Colorado, which averages around 627 students.

Adams 12 Five Star Schools comprises 54 schools with combined enrollment of 34,466 students; Thornton High School is among them.

Looking at the student body, Thornton High School records that the largest single group is Hispanic, at 71% of enrollment. Beyond that, the school reports 15% White, 10% Asian. By comparison, Adams County as a whole is about 43% Hispanic, so the school skews meaningfully more Hispanic than its surroundings.

In terms of school funding signals, Staff filings list 88 full-time-equivalent teachers, which works out to roughly 16.4:1 students per teacher. The state averages about 16.9:1, putting this campus right in line with peers. Around 79% of the student body qualifies for free or reduced-price meals, a commonly cited indicator of low-income enrollment. That share is higher than Adams County's rate of about 62%.

In the surrounding community, the surrounding county (Adams County) records that the typical household earns roughly $94,571 per year, about 29% of the adult population holds a bachelor's degree or above, and census figures put the poverty rate at about 7%. Across Adams County's 171 public schools (combined enrollment of about 87,938 students), Thornton High School is one campus in the mix.

The closest other public school is Thornton Middle School, roughly 0.2 miles away. Within five miles, there are 8 other public schools.

The campus sits in a bedroom-community setting.

Five-year trend. Thornton High School's enrollment has ticked down 16% since 2018, when it stood at 1,706 (now 1,439). Over the same period, the White share fell from 21% to 15%. Class-load math has pulled in: from 19.2:1 in 2018 to 16.4:1 in 2025.

Inside the community feed, members of the Thornton High School community share and discuss school events, parent volunteer needs, and clubs. The community welcomes input from current and former families.