In the United States and Canada, a prom, short for promenade, is a formal (black tie) dance, or gathering of high school students. It is typically held at the end of junior and/or senior year. It figures greatly in popular culture and is a major event among high school students.
"There's a big world out there. Bigger than prom, bigger than high school, and it won't matter if you were the prom queen or the quarterback of the football team or the biggest nerd. Find out who you are and try not to be afraid of it.”