ADELAIDE, April 13 - The Australian Education Union (AEU) will present state and federal ministers today with a letter signed by almost 6000 parents and teachers, urging a better deal for government schools.

"Fair and equitable school funding based on student need is fundamental for public schools to ensure every child gets the high-quality education they deserve," AEU president Correna Haythorpe said.

Haythorpe said the Federal Government cut almost $1.9 billion that was to go to public schools in 2018 and 2019, which would leave 87 per cent below the agreed School Resourcing Standard by 2023.

"It's time our leaders looked parents and teachers in the eye and guarantee our children a bright education future," she said.

The South Australian opposition says new SA Education Minister John Gardner must also use the meeting to stand up for local schools.

Labor Education spokeswoman Susan Close said in opposition the Liberals were silent on the $210 million cut from SA funding.

"Labor in government fought hard to restore the funding originally agreed between the state and commonwealth governments," Close said.

"We now look to John Gardner, as the new minister responsible for South Australian schools, to continue that fight."