The Productivity Commission released a new report showing that over the past five years, independent and Catholic schools have been receiving greater increases in government funding per student than public schools. Private schools received real increases of 3.4% per year between 2007 and 2012, while government schools received increases of just 2.4% per year.

The way our schools are funded is a matter of political philosophy – and it's curious that any Coalition government would not seek to stop this increase. We can all agree that education is a collective want in every western democracy, and one that provides material benefits. In Australia, Britain and most of the developed world, education is provided through government schools. And as the collective want of education provision is provided for through these public schools, there is no need for governments to provide precious public resources to those who opt out.

To take a child out of a government school, for whatever reason, is a private choice which ought not to be funded. Any government with a liberal bent would not throw money at private endeavours – be it private education, private businesses asking for subsidy, private foundations or similar. After all, the word private itself means to have no public role. It is strange, then, that the trend shows no sign of slowing down.

Governments pay $15,768 on average per public school student and $8,546 per private school student, yet private schools get $1.2m a year more funding from all sources than public schools. In the process of accruing these extra monies, private schools are draining government schools of much needed public resources. Meanwhile, Australia’s public schools are sinks of disadvantage. Government schools teach the great majority of poor, disabled (76.6%) and Indigenous (84.7%) students, as well as those who do not speak English as a first language. However, in spite of the additional costs and burdens associated with teaching disadvantaged students, cost increases are under inflation (unlike private schools ), and the results for the average student are as good as their private rivals.

Interestingly, a University of Queensland study of NAPLAN results recently debunked conventional wisdom that having a child in a private school leads to better academic results. Furthermore, there is a disadvantage in sending a child to a private school if they go on to university, as more drop out in their first year. The pattern is repeated overseas – students in Britain who get BBB grades and attend government comprehensive schools outperform students from private schools with A level grades on all measures.

In spite of this, governments continue to shove money into the private education sector, presumably to keep the well-to-do-swing-voter happy. It is time for governments to put the people’s money in the people’s schools, not in hungry elite private school systems using public funds to build a tennis court or state of the art facilities.

Australians should be proud to have a free public school system which often does a better job than private schools. We can't stand by and allow decay to grow as Christopher Pyne drags his curriculum reform red herring across the body politick.

Australia has a problem in education funding, something which was made abundantly clear for some time – something which Gonski attempted to ameliorate. Government schools are ripped off. This needs to be corrected, and no cent of public money should end up in the private school system – especially when it can do so much more good for both pupils and society in a government school.