Best High Schools in Zip Code 80021

Zip code 80021 is served by a single public high school: Standley Lake High School in Westminster, Colorado, which enrolls 1,123 students across grades 9–12 and operates within the Jefferson County School District No. R-1, a 4-star district ranking in the 79th percentile statewide. As the only high school in the area, Standley Lake is the default standout, and it distinguishes itself with a strong 91.3% graduation rate—well above both the district (86.7%) and state (85.6%)—and a low 1.2% dropout rate. Its state ranking has improved steadily, climbing from 149th in 2023–2024 to 127th in 2025–2026, moving from the 57th to 62nd percentile among Colorado high schools.

Academically, the school shows a clear split between literacy and math. On the 11th-grade SAT, 75% of students are proficient in reading and writing, a 9-point gain from the prior year and 15 points above the state average, while SAT math proficiency sits at just 32%—equal to the state but 10 points behind the district. This math gap persists across all grade levels: PSAT9 math is 43% (7 points below district), and PSAT10 math is 37% (13 points below district). Science proficiency on CMAS is 35.1%, above the state (24.8%) and nearly matching the district (36.1%). The school serves a moderately diverse socioeconomic population, with 32.68% of students eligible for free or reduced lunch, yet still outperforms state averages in reading, science, and graduation.

The most concerning metric is chronic absenteeism: 30.2% of students are chronically absent, higher than both the district (26.6%) and state (28.4%). This is particularly noteworthy given the strong graduation and dropout rates, suggesting that despite many students missing significant school days, the school manages to keep most on track to earn diplomas. The student-to-teacher ratio is 19.4, and the school holds a consistent 3-star rating from SchoolDigger. Overall, Standley Lake High School is an improving comprehensive high school with clear strengths in graduation outcomes and reading/writing, while mathematics proficiency and chronic absenteeism remain the key areas requiring attention.