An occasion where highschool students.. usually of their last years.. gather along with teachers to socialise, dance, eat, and maybe tell speeches. Pretty much a celebration of graduating, how ever some schools have year 11 formals.. and even year 10 formals! Dress code is formal (opposite to casual) hence the name. Some countries call it the Prom, but in Australia its called the Formal. Girls dress up in nice dresses and take a partner who wears a tie that matches the girls dress and sometimes brings along a corsage for the girl to wear.. most girls find it super sweet and exciting.