Year Nine is an educational year group in schools in many countries including England, Wales, Northern Ireland, Australia and New Zealand. It is usually the ninth year of compulsory education and incorporates students aged between thirteen and fourteen.
In Australia, Year Nine is usually the tenth year of compulsory education. Although there are slight variations between the states, most children in Year Nine are aged between fourteen and fifteen.
In New Zealand, Year Nine is the ninth year of compulsory education, and the first year of secondary education. Children are aged thirteen or fourteen in this year group.  Year Nine pupils are educated in secondary schools or area schools.
In England Year Nine is the ninth year after Reception. It is the ninth full year of compulsory education, with children being admitted who are aged 13 by 1 September in any given academic year. It is also the year in which pupils are formally assessed against National Curriculum levels. With effect from 2009, National Curriculum Tests are no longer compulsory in this year group.
Year Nine is usually the third year of Secondary school and was previously known as the 'third year' or 'third form'. In some areas of England, Year Nine is the final year of Key Stage 3.
Year 9 pupils tend to be aged between 13–14 years old. Pupils also choose their options in Year 9, for their GCSE qualifications.
In the United States Year 9 is 8th Grade and is the last year of Junior High (School)/ Middle School.
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