However, a 2016 report from the University of Sydney found that in general, all states of Australia lacked a comprehensive approach to hold private prisons accountable to the government. The authors said that of all the states, Western Australia had the "most developed regulatory approach" to private prison accountability, as they had learnt from the examples in Queensland and Victoria. Western Australia provided much information about the running of private prisons in the state to the public, making it easier to assess performance. However the authors note that in spite of this, overall it is difficult to compare the performance and costs of private and public prisons as they often house different kinds and numbers of prisoners, in different states with different regulations. They note that Acacia Prison, sometimes held up as an example of how private prisons can be well run, cannot serve as a general example of prison privatisation.
