The Prime Minister is upping the pressure on Victorian Premier Denis Napthine to sign on to the Gonski education funding overhaul, calling on him to "step up" for the state's students.

On Sunday the Government released a school-by-school breakdown of the funding improvements for public schools in Victoria under the Gonski model.

Julia Gillard says some Victorian students are up to three years behind in literacy and mathematics.

"For some schools teaching our most disadvantaged children it can be up to a 60 per cent difference," she said in a pre-recorded message.

"[The figures] are what extra there would be next year and what the total difference would be by the end of the six-year rollout.

Key points: Government has released a breakdown of how Gonski would improve funding in Victorian public schools.

Government has released a breakdown of how Gonski would improve funding in Victorian public schools. Julia Gillard says some schools will see a 60 per cent difference.

Julia Gillard says some schools will see a 60 per cent difference. Victoria is reluctant to sign on to the overhaul.

Victoria is reluctant to sign on to the overhaul. The State Government has a list of schools it claims will lose money under the reforms.

The State Government has a list of schools it claims will lose money under the reforms. So far only NSW, SA and the ACT have struck an agreement with the Commonwealth.

"I'm calling on the Premier of Victoria to make sure Victorian kids don't get left behind."

Dr Napthine has previously indicated his reluctance to sign on to the overhaul.

On Friday he accused the Government of holding a "political auction" rather than negotiating.

Last week the Government announced it would almost triple the amount of funding to Western Australia in an attempt to gain support, lifting its pledge from $300 million to $920 million.

Dr Napthine says NSW is now questioning its early commitment to the Gonski plan, having seen the better deals the Government has offered other states.

Victorian Education Minister Martin Dixon says he has not seen the Government's school-by-school breakdown.

The State Government has its own list of 249 schools that it claims will lose money under federal reforms based on the Commonwealth's own figures.

"The Federal Government haven't come to us with that new list," Mr Dixon said.

"The list that we released is actually based on their modelling and if their modelling has changed, so that there's a new list out and no school is disadvantaged, well they certainly haven't shown it to us."

Government accused of sending mixed messages on funding

Mr Dixon says his federal counterpart Peter Garrett is sending mixed messages about school funding.

Mr Garrett says it will be up to the states and territories to determine the spread of funding.

But Mr Dixon says Mr Garrett has told him a different story.

"I was really surprised when Minister Garrett came out and said it's up to the states and territories to decide what school gets what money," he said.

Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. Watch Duration: 12 minutes 21 seconds 12 m Peter Garrett joins Insiders ( Barrie Cassidy )

"Because I asked him that very question at a ministerial council a couple of months ago.

"I asked him, 'who actually will decide what schools get what money?' and he said to me the model will decide that."

Earlier on Sunday, Mr Garrett conceded it is unlikely Queensland will come on board.

"The figures online are what extra there would be next year and what the total difference would be by the end of the six-year rollout," he said.

The Coalition says it would only honour the Gonski deal in government if it has overwhelming support.

So far only New South Wales, South Australia and the ACT have struck an agreement with the Commonwealth.