Education Minister Yvette Berry said the list of 76 schools would be published on the Education Directorate website.

She said 46 schools had maintenance work completed over the school holidays and all 46 schools had been tested for lead contamination.

Of these, six schools had lead dust present in low levels in areas that were not learning spaces.

The Canberra Times asked Ms Berry and the Education Directorate specific questions about these six schools, including when and where the dust was found and what remediation work was undertaken, but did not receive a response by deadline.

Ms Berry said opposition education spokesman Jeremy Hanson was being "completely unfair" by suggesting schools were unsafe.

"Our schools are safe and we provide advice to all of our schools on hazardous materials. It's available at every school," Ms Berry said.

"It's transparent and public. There's nothing to hide. There's no secrecy around hazardous materials or anything else that's happening in our school communities."

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Mr Hanson said earlier on Tuesday that parents had a right to know about hazardous materials.

He called for a list of affected schools to be published and for parents to have information provided in plain language.

"You don't want to find out through the media. You don't want to speculate and have to go and find the hazard management plan at the front office," he said.

"It's very reasonable that the minister through the schools lets parents know so they can reassure parents if they are having a problem with lead paint that it's being managed and the children are safe."

Mr Hanson said he was glad a Legislative Assembly committee would inquire into school infrastructure, including the management of hazardous substances.

Four schools have discovered lead contamination since July last year, prompting calls from parents for the directorate to develop a plan to eventually remove hazardous substances from schools.

Yarralumla Primary School were the worst affected when students were locked out of their classrooms for weeks after lead dust contaminated 11 rooms in the July school holidays.

Ms Berry said she hadn't provided the full list of affected schools earlier because she didn't want the opposition to spread fear in the community.

"I was fearful of exactly this situation where Mr Hanson comes out and suggests there was some secrecy. There hasn't [been any]," Ms Berry said.

"This is something that needs to be managed in a grown up, mature and sensible way."

She said fact sheets provided by the Education Directorate's advisory committee on hazardous materials would be published alongside the list of schools.

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