Summary:
In zip code 80122, there is exactly one public high school: Arapahoe High School in Centennial, Colorado, serving grades 9 through 12 and operating under the highly rated Littleton School District No. 6. This means Arapahoe is the sole high school option for families in this area, and it is a consistently strong one—earning a 5-star rating and ranking in the top 8% of Colorado high schools for three straight years (26th of 338 schools in 2025–2026, 21st of 328 in 2024–2025, and 27th of 349 in 2023–2024).
Academically, Arapahoe High School outperforms both its district and the state across nearly every measure. On the 2025–2026 assessments, 11th-grade reading and writing proficiency hit 84% (state: 60%), while 11th-grade math reached 59% (state: 32%). Science proficiency on the CMAS was 53.6%, more than double the state average of 24.8%. Lower grade levels show the same pattern: PSAT 9 reading/writing was 87% and math 66%, while PSAT 10 reading/writing was 88% and math 66%—all well above state averages. The school also boasts a 95% graduation rate (state: 85.6%) and an extremely low dropout rate of 0.7%.
Reading and writing are clearly the school's standout strength, with proficiency rates often 20–25 points above the state. Math, while still well above state averages, remains the relative weakest subject. Science scores are exceptional but showed a notable drop from 64.9% in 2024–2025 to 53.6% in 2025–2026—still double the state rate, but worth watching. One area of concern is chronic absenteeism: 22.4% of students missed enough school to be considered chronically absent in 2024–2025, significantly higher than the district's 16.0% rate, though still below the state's 28.4%. With a student-teacher ratio of 22.5:1 and only about 16.8% of students receiving free or reduced-price lunch, Arapahoe serves a largely affluent community and delivers top-tier results despite its large size. For families in the 80122 zip code, this school is not just the only option—it is an excellent one.
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