Twelfth grade, 12th grade, senior year, or grade 12 is the final year of secondary school in most of the world. It may also be referred to as class 12 or Year 13. In most countries, students are usually between the ages of 17 and 18 years old. Some countries have a thirteenth grade, while other countries do not have a 12th grade/year at all. Twelfth grade is typically the last year of high school (graduation year). Australia In Australia, the twelfth grade is referred to as Year 12. In New South Wales, students are usually 16 or 17 years old when they enter Year 12 and 17 or 18 years during graduation (end of year). A majority of students in Year 12 work toward getting an ATAR (Australian Tertiary Admission Rank). Up until the start of 2020 the OP (Overall Position, which applies only to students in the state of Queensland) was used. Both of these allow/allowed them access to courses at university. In Western Australia, this is achieved by completing the WACE; in South Australia, this is achieved by completing the SACE; in Victoria, this is achieved by completing the VCE; in the Australian Capital Territory, this is achieved by completing the AST and in New South Wales this is achieved by completing the HSC. In New South Wales, when completing the [HSC], students are required to satisfactorily complete at least 10 units of study in ATAR courses which must include: eight units from Category A courses two units of English three Board Developed courses of two units or greater four subjects Some Year 12s may receive a Year 12 Jersey. Schools choose the design, colors, and writing which are printed or stitched onto the Jersey. Sometimes the last two digits of the year they are graduating are printed on the back (for example, "12" for 2012 school leavers) along with a personalized nickname or surname. The front may show the school emblem and the student's name, which is occasionally stitched in. Many schools conduct end of year "formals" (similar to a senior prom). They are held from any time between graduation from September to November. Australian private schools often conduct Year 12 Formals in January or February of Year 12 instead of an end of year formal. Bangladesh In Bangladesh, educational institutions offering the 11th–12th grade education are known as colleges. In the 12th grade, students study