Prime Minister Julia Gillard is in town and is understood to be visiting a school with Premier Jay Weatherill in the morning. Neither the Federal Government nor the State Government would confirm it was happening on Friday, but Mr Weatherill has consistently said he was in favour of the reforms but needed to work through the details. SA would become the latest state to sign up to Canberra's school funding plan. Ms Gillard set a deadline of June 30 for the states to sign up, saying that would provide certainty to schools needing to set budgets. When Mr Weatherill was asked yesterday whether he was any closer to signing a deal, he said "absolutely, very soon." "The Budget provided for that and we're working through some of the final detail," he said. I hope to be able to make some announcement very soon. Federal Education Minister Peter Garrett, who was in Adelaide yesterday, had to hose down concerns that deals were being done to secure the states' agreement. It has not been confirmed whether the bargaining between Mr Weatherill and Ms Gillard led to an increase in funding for SA, although The Australian newspaper today reports that the Gillard government's original proposal was $556 million over six years and had been increased to more than $620 million to secure Mr Weatherill's signature. Meanwhile NSW Premier Barry O'Farrell is now investigating whether his state was dudded after Ms reportedly trebled her offer to Western Australia. NSW was the first state to sign up, and Mr O'Farrell said Ms Gillard had promised her offer to other states would not change. "At the press conference, the Prime Minister clearly said the same deal that NSW was signing up to was available to other states and territories - no better, no worse," he said. The complex federal funding model distributes Government money based on student need and disadvantage. SA was set to get less than its expected share because it had already gone some way to evening out the disadvantage. Opposition education spokesman Christopher Pyne said that the apparent deal with WA to get a signature seemed to be a "betrayal of trust." He said: "The states should be very concerned that Labor is not dealing honestly with them or honouring agreements."