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 Pyramid in Cluster VIII. Westfield's main building has the same layout as South County High School (Fairfax County, Virginia). At 3,260 students, it is one of the largest four-year high schools in the Commonwealth of Virginia. The school was listed as the 46th best high school in the United States by Newsweek magazine in 2002 and 27th in the Washington, D.C., metropolitan area by The Washington Post in 2006 due to a high percentage of students enrolled in Westfield's Advanced Placement (AP) classes. Westfield shares a business partnership with Northrop Grumman's business IT group that entails sharing of buildings, as well as financial donations and gifts of supplies. It also shares an education partnership with Centreville Presbyterian Church to improve student achievement. History Westfield was first conceived to help deal with the extensive overcrowding at adjacent schools, primarily Centreville and Chantilly high schools. Plans for Westfield High school originated in 1995 when it was conceived as West County High School. Westfield's colors and mascot were chosen by community members in the months before its grand opening in 2000. By 2005, Westfield had grown so large that it had become one of the largest four-year high schools in Virginia. An additional wing was planned to help deal with the overcrowding, and was completed in summer of 2006. Regulation 1320.1 Regulation 1320.1 (also known as Guidelines for Restricting Interruptions to Instructional Time—Middle and High Schools) was implemented on April 21, 2004, as an FCPS directive. It was adopted by the county school board to ensure that instructional time in middle and high schools meet limits set by the Virginia Department of Education. The directive limited events such as assemblies and pep rallies by categorizing them as after-school events, with the exception of homecoming pep rallies. Local radio station DC101's Elliot in the Morning show held a contest in fall 2004 for area high school students whose winners were to host alternative rock band Taking Back Sunday at their school. Westfield students won this contest, whose result was approved by former principal