From Longman Dictionary of Contemporary Englishhead boyˌhead ˈboy noun [countable] SESthe boy who is chosen in a British school each year to represent the school
Examples from the Corpus
head boy• Hilary Frome was, after all, head boy designate.• He was educated at the City of London School, leaving at the age of sixteen as head boy.• As head boy, you know.• One of its main decisions was to abolish the school's head boy and girl system.• After all, the head boy must show the way. 