Year 12 is an educational year group in schools in many countries including England and Wales, Northern Ireland, Australia and New Zealand. It is sometimes the twelfth year of compulsory education, or alternatively a year of post-compulsory education. It usually incorporates students aged between 16 and 18, depending on the locality. It is also known as "senior year" in parts of Australia, where it is the final year of compulsory education. Year Twelve in England and Wales, and in New Zealand, is the equivalent of Eleventh grade, junior year, or grade 11 in the US and parts of Canada.