Greens MP Abigail Boyd said a parliamentary committee into the "failures" of the early childhood education and care sector in NSW has been established, which she will be chairing.
"Dropping your child off at an early learning centre in the morning is an enormous act of trust, but it doesn't need to be a blind leap of faith," she said on Friday.
"Families deserve transparency and accountability, and that's what a parliamentary investigation can help to deliver.
The inquiry comes on the back of an ABC Four Corners investigation that exposed alleged child sexual abuse being ignored by regulators and service providers prioritising profit over children's care with regulatory enforcement lacking.
Up to 47,000 children are attending for-profit facilities that are failing to meet national standards, the program said.
Almost three-in-four childcare services are privately owned, contributing to soaring fees and shortages in rural and lower-income areas, despite the government providing billions in subsidies annually, advocacy groups have noted.
Ms Boyd said securing unanimous support from all sides of politics showed the revelations had touched a nerve.
"The safety and wellbeing of the children of this state is an issue that transcends political persuasions."
Prime Minister Anthony Albanese on Tuesday ruled out calls to establish a royal commission saying the evidence presented on the program exposed clear breaches.
