Each state’s tertiary admissions centre calculates and awards ATARs in their own state, but an ATAR in each state is equivalent and transferable. WACE students can therefore use their ATARs for interstate university admission, and interstate students can use their ATARs (or Queensland’s OP) for entrance into Western Australian universities. The Interstate Transfer Index (ITI) is used to maintain the equivalence of ATARs across states, and all states can use the same method using only Year 12 results, rather than any pre-Year 12 studies in conjunction with final year results.