In schools in Northern Ireland Year Twelve or Fifth Form is the twelfth and final year of compulsory education, and the fifth year of Secondary education. Children are generally fifteen when starting classes and sixteen at the end of the school year, though this is dependent on which date their birthday falls.

Year 12 is the year in which General Certificate of Secondary Education (GCSE) exams are taken. It is the last year of Key Stage 4.

Lower sixth form students, in the first year of their A Levels, are often included as Year 12 pupils by institutions across England, Wales and Scotland.

Year 12 is the final year of secondary education in Australia; students are aged 17-18 years.

See also

• Grade 12