Westfield High School is a public high school in unincorporated Fairfax County, Virginia, United States, west of the Chantilly CDP. It is a part of Fairfax County Public Schools (FCPS), serving students from the communities including Chantilly and Centreville as well as areas with Herndon addresses in grades 9–12. Opened in 2000, it is the head of the Westfield High School... Wikipedia