About
Data confidence level: 
The National Assessment Program—Literacy and Numeracy (NAPLAN) tests are taken each year in May by all students across Australia in Years 3, 5, 7 and 9. All students in the same year level are assessed using the same test items in the assessment domains of reading, persuasive writing, language conventions (spelling, grammar and punctuation) and numeracy.
The governing body ACARA states that every year, more than one million students sit the NAPLAN tests nationally, providing students, parents, teachers, schools and school systems with important information about the literacy and numeracy achievements of students. Results also act as performance indicators that are nationally comparable and serve to inform and support improvements to teaching and learning practices.
This FACT indicates the average score that each state and territory achieved in 2017 for the level of Year 9. The score, by state or territory, is calculated by averaging the mean scale of each of the 5 'domain' areas of proficiency.
