Several children have been injured after a auto crashed into a school in Greenacre, NSW Police say.
Children who were inside the classroom at the time have described the frightening disaster to the Daily Telegraph.
Emergency crews responded at 9.45am, and arrived at the scene to find two children in cardiac arrest and another in a serious condition.
A group of tradesmen working nearby and the father of a student at the school rushed to help and lifted the vehicle off of the two boys who were later pronounced dead.
The female driver, 52, was uninjured but has been taken to hospital for routine blood and urine tests.
Earlier, ambulance officers described the scene as a "horrific incident" and "scene of carnage".
"(Students) were screaming, saying they wanted their mum, I want help", she said.
It was written by a year four student at the school.
Paramedics arrived to "a scene of carnage" with "distressed and overwhelmed children and teachers".
She explainned: "There were a number of distressed and overwhelmed children and teachers at the scene of a disgusting accident".
Police established a crime scene and Ms Al-Shennag was later charged with two counts of risky driving occasioning death and one count of negligent driving.
Two ambulance chaplains were brought in to the school to support the victims.
Two eight-year-old girls and one nine-year-old girl were also taken to hospital, and are now believed to be in a stable condition.
Acting Assistant Police Commissioner Stuart Smith said: 'We're not looking this as an intentional act'.
'They were crying, they were distressed, some were asking for their parents.
Police from Bankstown Local Area Command and Metropolitan Crash Investigation Unit are investigating and have established a crime scene.
Dozens of parents frantically searched for information at police barricades as roads around the school were closed down throughout Tuesday.
At least 18 children were assessed at the scene as well as one adult.