TWEED school principals and politicians have joined the NSW Premier in condemning the Federal Government's backflip on Gonski-inspired education funding.

Condong Public School principal Terry Timms said the Coalition had "deliberately deceived" voters during the Federal Election campaign when it said it was on a "unity ticket" with Labor regarding school funding.

Education Minister Christopher Pyne announced this week his government was scrapping Labor's plans for school funding and would renegotiate agreements with all states and territories within a year, but he denied they were breaking election promises.

The minister said Labor removed $1.2 billion from the education budget before the election, when it failed to clinch "better schools" deals with Western Australia, Queensland and the Northern Territory.

"Pyne's putrid announcement is a betrayal to the whole community," Mr Timms said.

Under Labor's funding model Mr Timms' school had been allocated an extra $15,000 for four years starting in 2014 and they had been making plans for new programs that were now under threat.

"Mr Abbott and Mr Pyne have ruled out guaranteeing that no school will having their funding levels cut," he said.

"The anger from my colleagues and their concerns about what's next are mounting."

Richmond Federal MP Justine Elliot said it was a broken promise to North Coast families.

"It proves that during the election campaign the National Party candidates didn't tell the truth to local parents," Ms Elliot said.

Tweed Greens federal spokesperson, Dawn Walker, said it would hit local schools hard.

NSW Premier Barry O'Farrell has vowed to hold the new government to the previous agreement. States that struck Gonski funding deals are urging PM Tony Abbott to intervene.