Best High Schools in Zip Code 80121

Zip code 80121 is home to a single high school—Littleton High School—a large traditional public school in Littleton School District No. 6 serving grades 9 through 12 with an enrollment of 1,187 students. While the district itself is highly ranked (8th out of 115 in Colorado, with a 5-star rating), Littleton High School's own state ranking has slipped from the 73rd percentile in 2023–2024 to the 64th percentile in 2025–2026, dropping from a 4-star to a 3-star rating. The school’s graduation rate of 88.6% beats the state average of 85.6%, and its dropout rate of 1.2% is below the state’s 1.6%, but both trail the district's 92.9% graduation rate.

Academically, the school performs above state averages in most subjects, particularly mathematics: SAT Math proficiency stands at 38% versus 32% statewide, PSAT9 Math at 52% versus 40%, and PSAT10 Math at 49% versus 39%. Science scores are also strong relative to the state (33.3% vs. 24.8%). However, Littleton High School consistently lags its own district in every tested subject and grade. The largest gaps appear in reading and writing: SAT Reading & Writing proficiency is 62% compared to the district's 78%, and PSAT10 Reading & Writing is 68% versus 83%. The most recent 11th-grade results show notable year-over-year declines, with SAT Reading & Writing dropping 8 points and SAT Math dropping 8 points, which aligns with the school's falling state rank.

The most significant red flag is chronic absenteeism: 31.4% of students are chronically absent—nearly double the district rate of 16.0% and above the state's 28.4%. With roughly one in three students missing substantial school time, this likely contributes to weaker upper-grade performance and the growing district gap. The school also serves a moderate share of economically disadvantaged students (40.19% free/reduced lunch eligible) and carries a relatively high student–teacher ratio of 19.6:1. Families considering this area should weigh the school's above-state math and science performance and solid graduation rate against its declining rankings, literacy gaps versus the district, and the pressing absenteeism challenge.