Standley Lake High School

As a big senior high in WESTMINSTER, Colorado, Standley Lake High School enrolls 1,123 students from grades 9 through 12, operated by Jefferson County School District No. R-1. Compared to the state average of about 627 students per school, that is 79% larger than typical.

Jefferson County School District No. R-1 runs 148 schools in total, collectively educating 74,935 students. Standley Lake High School is one of those campuses.

Looking at the student body, Standley Lake High School lists that White students make up the majority at 59%. Beyond that, the school shows 27% Hispanic, 6% multiracial, 5% Asian. By comparison, Jefferson County as a whole is about 80% White, so the school skews visibly less White than its surroundings.

Looking at school resources, On paper, Standley Lake High School has 58 full-time-equivalent teachers, translating to a class-load average of around 19.5:1. The state averages around 16.9:1, so this campus is higher than the state norm typical. An estimated 33% of students are eligible for free or reduced-price lunch, which schools and policymakers use as a rough income-mix signal.

After controlling for student poverty, Standley Lake High School is in the bottom 10% of Colorado public schools. The BeatsExpectations model predicts schools with this FRL share to land around 46.9%; Standley Lake High School posts 30.4%, -16.6 points below that line.

In the broader community, community-level numbers for Jefferson County indicate median household income runs about $110,656, 52% of adults hold a bachelor's degree or higher, and census figures put the poverty rate at about 4%. In all, Jefferson County runs 168 public schools (combined enrollment of about 74,739 students), of which Standley Lake High School is one.

Wayne Carle Middle School is the nearest neighboring public school, about 0.8 miles from this campus. Within five miles, there are 8 other public schools. On composite proficiency, Standley Lake High School comes 6th of 8 in the immediate cluster, beneath the nearby-schools average of 41.6%.

The campus sits in an outer-ring setting.

Looking at the recent track record. Looking back 7 years, enrollment at Standley Lake High School has shrank 17%, going from 1,359 students in 2018 to 1,123 in 2025. Hispanic enrollment moved from 20% to 27% across the same window.

On allk12, members of the Standley Lake High School community share and discuss open house dates, ride-share offers, and field-trip permission slips. Posting is open to anyone connected to the school.