Families SA will reform after Valentine

Opportunities to save Chloe Valentine from her dysfunctional and chaotic family were missed, but Families SA boss Tony Harrison says he has no intention of quitting.

Speaking for the first time after the coroner handed down his findings into the death of the four-year-old, Mr Harrison said he remained committed to developing the best possible child protection regime in South Australia.

"I have no intention of stepping down. I am absolutely highly committed to the reform process," he said on Monday.

But Mr Harrison said there was no doubt the department could and must do better and admitted there were opportunities to remove Chloe from her family as far back as 2008.

Chloe died of massive head injuries in January 2012 after being forced to ride a motorbike and repeatedly crashed over a three-day period in the backyard of her Adelaide home.

Polkinghorne and her then partner are in jail after pleading guilty to Chloe's manslaughter through criminal neglect.

In his findings last week Coroner Mark Johns described Families SA as "broken and fundamentally flawed" and said Polkinghorne was an "accomplished liar practised in deceit and manipulation".

He criticised Mr Harrison for his attitude toward drug use by parents involved in the child protection system, prompting calls from the state opposition for the Families SA boss to resign.

Mr Johns also delivered a raft of recommendations, including removing newborn children from parents who had previously been found guilty of killing one of their older children.

He called for wider use of income management in child protection cases and said adoption should have a role in alternative placement options.

The findings were considered by state cabinet on Monday and Child Protection Reform Minister John Rau said the government had resolved to support 20 of the coroner's 21 recommendations.

Cabinet decided one recommendation - that children under 12 never be transported by a chauffeured delivery service unless in the custody of a Families SA employee - required further investigation.

"This case has highlighted failings in the system and there are changes that must occur," Mr Rau said.