Colonel Zadok A. Magruder High School

Col. Zadok Magruder High School (#510) is a secondary public school located in Rockville (Montgomery County), Maryland, United States. Magruder is named for Colonel Zadok Magruder, a Revolutionary War patriot and farmer. He was colonel in command of part of the Maryland militia and helped establish Montgomery County's government in 1776. The school is called simply "Magruder". The school first opened in 1970 at , with 8th, 9th and 10th graders. In 1971, the same student body became 9th, 10th and 11th graders. The first graduating class was the Class of 1973 and numbered approximately 300. Major additions were added in 1974, 1994, and 2000 ( of additions, of renovation of the 1994 addition, and demolition of of the 1994 addition). The building now totals .