Ms Mularczyk, also vice president of the NSW Secondary Principals Council, said education was an uneven playing field for students from disadvantaged backgrounds.

The Gonski review into school funding, released this week, showed a link between the concentration of disadvantaged students in a school and lower education outcomes.

The review called for an injection of $5 billion into annual education funding to ensure there is no trend of wealth determining education results.

Ms Mularczyk said she agreed with the review's recommendation that education should be funded on a per student, rather than per school basis, with standards reflecting socio-economic backgrounds and English language proficiency.

"I think base funding in our local school communities is exceptionally significant," she said. "For too long there has been a lack of equity in funding and funding has not been addressing the needs in low socio-economic schools."

Catholic Education Diocese of Parramatta school's director Greg Whitby said independent schools in the area serve some of the most disadvantaged communities in western Sydney.

"We look forward to ongoing discussions with both federal and state governments on finding a more equitable funding model to benefit all students in all schools in western Sydney," Mr Whitby said.

The headmaster of The Kings' School in Parramatta, Tim Hawkes, said the government shouldn't remove the incentives to promote private effort and funding.

"Despite the Gonski review there will remain student underperformance in schools," Doctor Hawkes said. "At times this will be the fault of inadequate funding — and this is what David Gonski wants to fix. At other times it will be the fault of inadequate teaching, inadequate parenting or an inadequate commitment to learning by the child."

Parramatta MP Julie Owens believes education has become an unequal playing field but said the recommendations should be carefully considered. "This is a once in a lifetime chance to address school funding," she said.