To meet the breadth and depth requirements, students must study at least 20 units, including 10 units of Year 12 courses; four units of English at a post-Year 10 level (i.e. across years 11 and 12), including a pair of units at Year 12 level; and a pair of Year 12 units from both List A, which consists of humanities subjects and List B, made up of STEM subjects. Subjects generally have four units studied across two years. Units 1 and 2 are generally studied in Year 11, and units 3 and 4 are generally studied in Year 12.