An academic year is a period of time which schools, colleges and universities use to measure a quantity of study.
In Australia and New Zealand, academic years for primary and secondary institutions are divided into two semesters, with each semester being further divided into two terms (thus totalling four terms per year). Although historically the year was divided into three terms with an extended Easter break interrupting the first term, the year has been divided into four terms since the late 1980s (with the exception of the Australian state of Tasmania which did not change until 2013).
Following southern hemisphere seasons, the main summer holiday between academic years encompasses most of December, all of January and sometimes a few days at the beginning of February, and always encompasses Christmas and New Year as well as Australia Day on 26 January. In year 12, however, the term ends in November; for those who go on to university, the term starts in March. New Zealand celebrates Waitangi Day on 6 February; the summer holidays in New Zealand may or may not extend as far as that day, depending on the year. There is typically a break of two weeks mid-semester (i.e. after Term 1 and after Term 3) and a break of three weeks in the middle of the year, although this can vary between jurisdictions. In the year 2000, due to the 2000 Olympic Games in Sydney, the state of New South Wales extended the break after Term 3 to three weeks, compensating by reducing the break in the middle of the year to two weeks.
Historically, the Term 1 holidays have been scheduled around Easter, reflecting the three-term system's notion of an extended Easter break within Term 1; although since the mid-1990s this has gradually changed, and now only Queensland and Victoria tie the school holidays closely to Easter; the remainder of Australia and all of New Zealand now have a fixed length to Term 1 which leads to the Easter period falling within Term 1 in some years with an early Easter, such as 2016.