In the United States, a prom, short for promenade, is a formal dance held at the end of the years of high school and college, called junior prom and senior prom respectively. In British English such an event would be called a ball, although in Canada, Australia, and New Zealand it is also often called a formal. In Australian schools the terms used are either formal or sometimes as Leaver's Dinner, usually so when the night includes a meal. In Ireland it is known as a debs (an abbreviation of debutante ball). In the U.S. a "formal" is typically a similar dance that is held by a fraternity or sorority affiliated with a certain college or university. In Australia, the term "prom" has also come into sparse usage and in Britain it is becoming widespread, because of US influence. The name is derived from the late ninteenth century practice of a Promenade ball. The end of year tradition stemmed from the Graduation Ball tradition.

Washington is a state in the Pacific Northwest of the United States. The state is named after George Washington, the first President of the United States. As of the 2000 census, the state population was approximately 5.9 million and the state work force numbered about 3.1 million. Residents are called "Washingtonians" (emphasis on the third syllable, pronounced as tone). It should not be confused with Washington, D.C., the nation's capital city. To avoid confusion, the city is often called simply D.C. and the state is often called Washington State.