Public schools have long been under-funded for the learning challenges they face. In 2024, they were only funded at an average of 88% of their Schooling Resource Standard across Australia. By contrast, private schools were over-funded on average at 104% of their SRS.
The prime minister and education minister promised that the Better and Fairer Schools Agreement will fully fund public schools by 2034. This has already proved to be a false promise. New bilateral funding agreements with the New South Wales, Queensland, South Australian, Western Australian and Tasmanian Governments reveal that public schools will not be funded at 100% of their SRS by 2034 despite a significant planned boost in funding over the decade.
From what I understood, the data comes from here: https://www.nap.edu.au/naplan/results-and-reports And specifically the national data here: https://www.acara.edu.au/reporting/national-report-on-schooling-in-australia/naplan-national-results
(The article didn’t reference its sources I think? My comment is to complement.)