Best Public Schools in Zip Code 20151

Zip code 20151 (Chantilly, VA) is served by 6 public schools in Fairfax County Public Schools, a 4-star district ranked 39th in Virginia, enrolling 8,721 students across two high schools, two middle schools, and two elementary schools. The zip offers an unusually wide range of school experiences: two schools rank in the top 5% of the state, while others sit closer to the middle or even the bottom.

The clear standouts are Poplar Tree Elementary and Rocky Run Middle. Poplar Tree ranks 45th out of 1,111 Virginia elementary schools (96th percentile) with 5th grade reading at 94.1% and a low 10.3% free/reduced-price lunch rate, yet it spends the least per student in the zip ($11,587). Rocky Run ranks 21st out of 416 middle schools (95th percentile), with 100% proficiency in 8th grade Geometry and Algebra II. Fellow middle school Franklin Middle is solid but a step behind, ranking in the 81st percentile. Among high schools, Chantilly High is the clear leader: ranked 49th in Virginia (85th percentile), it graduates 96.0% of students with a 2.7% dropout rate. Westfield High trails badly, ranking 221st (33rd percentile) with a 93.1% graduation rate and 5.4% dropout rate, while serving a higher-poverty population (35.7% FRPL vs. 20.7%).

The zip also contains stark divides. Brookfield Elementary, less than two miles from Poplar Tree, has an 81.9% free/reduced-price lunch rate and ranks 916th in the state, though 2025-26 test scores improved dramatically across all subjects. Both high schools share a quirk: 11th grade reading scores are strong (94.4% at Chantilly, 88.1% at Westfield), but 12th grade scores drop sharply—likely because seniors retaking the SOL pull down the average. Advanced math acceleration is a signature strength, with 6th graders at Poplar Tree taking Algebra I and 8th graders at Rocky Run taking Algebra II, all at 100% proficiency. Chantilly's rank jumped from 71st to 49th this year, while Westfield slipped from 168th to 221st. For parents, this zip offers elite options at every level, but the socioeconomic gap between Brookfield and the rest is the defining challenge.