substitute teacher

A substitute teacher is a person who teaches a school class when the regular teacher is absent or unavailable; e.g., because of illness, personal leave, maternal or paternal leave and so on. "Substitute teacher" (usually abbreviated as sub) is the most commonly used phrase in the United States, South Africa, Canada (except Ontario and New Brunswick), India and Ireland, while supply teacher is the most commonly used term in Great Britain and the Canadian provinces of Ontario and New Brunswick. The term cover teacher is also used in Great Britain. Common synonyms for substitute teacher include relief teacher or casual relief teacher (used in Australia and New Zealand, commonly appreciated as relief) and "emergency teacher" (used in some parts of the United States). Other terms, such as "gues...