The Federation of Parents and Citizens Association of NSW chief executive said she would like to see a funding boost announced on Tuesday go towards smaller classes and better resources for children, no matter their needs.
"I have experienced the benefits of public education," she told AAP.
"But also the times that parents are asked to pick up the bill for ancillary costs, or make voluntary contributions where budgeting falls short."
After months of back and forth, the Commonwealth has agreed to to lift its contribution to NSW state schools to 25 per cent of the Schooling Resource Standard by 2034.
The standard estimates how much total public funding a school requires to meet students' needs
It means an extra $4.8 billion in federal money to fully fund public schools, which will help more than 780,000 children.
With NSW on board, Queensland remains the lone holdout as discussions continue.
From the beginning of 2025, the money will be distributed to schools over a decade.
NSW agreed to tie its funding to changes to numeracy checks in early years, wellbeing initiatives and improved retention and attraction of teachers.
Terrigal Primary School principal Michael Burgess said the money will allow schools to better support and grow current programs.
"Public primary schools have been doing a great job with what they have," he told AAP.
"But a lot of the work is through the goodwill of teachers and other staff putting in extra time and effort with students."
Mr Burgess said there would be boosts for small-group tuition for students who need extra support, and mental health and wellbeing services at his school.
The NSW Primary School Principals Association president said change in students' learning will take time, but he is confident principals will make the most of yearly resourcing.
Prime Minister Anthony Albanese said the funding boost wasn't a "blank cheque".
"We want to make sure that it's tied to real reforms like evidence-based teaching practices, phonics and numeracy checks, catch-up, tutoring, more mental health support," he told reporters in Sydney.
The prime minister visited a primary school with federal Education Minister Jason Clare, where they signed the agreement with NSW Premier Chris Minns and Education Minister Prue Car.
Mr Minns said the funding would make a "massive difference" and help reduce big classrooms.
"What this money means is that we can have intense small groups so that no child is left behind," he said.
The federal government currently chips in 20 per cent, while the states are required to fund public schools at 75 per cent, leaving a five per cent gap that governments have been trying to close.
In 2024, the federal government reached deals with Western Australia and Tasmania to boost its contribution to 22.5 per cent, leaving the states to increase their funding to 77.5 per cent.
But every other state held out for more, with Victoria and South Australia making a deal in January for the commonwealth share to lift to 25 per cent, foreshadowing the NSW deal.
The latest three agreements require the states to stop using an "accounting trick" that allowed them to claim four per cent of public school funding for indirect school costs such as capital depreciation.
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