Gonski reform will be gone without full support: Coalition

A COALITION government will tear up any deals the Commonwealth strikes with states and territories on education funding reform unless every jurisdiction signs up.

Opposition education spokesman Christopher Pyne issued the warning on Friday as South Australia joined New South Wales and the ACT in signing up to the National Education Reform Agreement.

Prime Minister Julia Gillard visited her former school, Mitcham Primary, to announce the deal alongside South Australian Premier Jay Weatherill.

The Federal Government was forced to increase its six-year proposal of $566 million to $656 million - comprising a 65-35% federal-state split - to get the deal over the line.

Taking into account indexation, Ms Gillard said the agreement would increase public funding to South Australian schools by around $1.1 billion between 2013 and 2019, with public schools getting a $717 million boost, the Catholic schools sector $197 million and the independent schools sector $186 million.

Ms Gillard has set a deadline of June 30 to get the signatures of all state and territory leaders.

In a sign of just how eager Ms Gillard is to get every state on board she this week tripled the Commonwealth's offer to Western Australia.

But it and other states, particularly those with Coalition governments, have shown no signs of budging.

Mr Pyne told reporters unless every state and territory signed up a Coalition government would not honour the agreements.

"Unless there's a national agreement, we will repeal this proposal and keep the current model for two years while we sort out the chaos that Labor has created," Mr Pyne said.

Aware of the Coalition's intentions, Ms Gillard warned voters in NSW, South Australia and the ACT their deals were "at risk" on September 14.

She called on the premiers and Northern Territory's chief minister yet to put pen to paper to "put their kids first".

"Christopher Pyne has now made it crystal clear that if the opposition is elected ... they will repeal all of this before the start of next school year," Ms Gillard said.

Mr Weatherill said this would be a "disaster for the children of South Australia".

The Federal Government argues the reform is vital to help place Australia in the top five countries for reading, maths and science by 2025.

The agreement will ensure that funding arrangements will now be based on the needs of individual students and individual schools and it will also incorporate the National Plan for School Improvement which will drive continued reform and improvement in the areas we know drive better student outcomes.