Balloons and flowers.

Photo: Tributes outside Banksia Road Primary School in Greenacre where two boys died. (AAP: David Moir)

The lawyer for a woman charged over a fatal Sydney classroom crash has told the ABC it is not only a tragedy for the two young victims, but also for his client who is “very distraught”.

Maha Al-Shennag, a widowed mother of four, apologised for the hurt caused after she drove a Toyota Kluger into a classroom of 24 students at Banksia Road Public School on Tuesday.

The 52-year-old was dropping one of her children off at the school when the car careered out of control from a nearby staff car park.

Two eight-year-old boys died as a result of the crash and three other students remain in hospital in a stable condition.

Ms Al-Shennag’s lawyer, Nick Hanna, said she had described what happened as a tragic accident and she was “deeply sorry for the loss and hurt suffered” by the children and the wider community.

“Her thoughts and prayers are with all those affected,” he said.

A car in the side of a building.

 Photo: Police and paramedics are seen at a scene of a car crash at Banksia Road Public School in Greenacre, Sydney on November 7, 2017. (AAP: Dean Lewins)

She was charged with two counts of dangerous driving occasioning death and one charge of negligent driving. She has since been released on bail.

Police said they did not believe the incident was an intentional act.

Ms Al-Shennag has undergone mandatory blood and urine tests with results yet to be returned to police.

The car involved will be checked for mechanical problems and Ms Al-Shennag’s mobile phone will be inspected, but police said they were keeping an “open mind” as to what caused the crash.

Today, just 88 of 570 students returned to school as the community continued to grieve.

Mother hugs her son

Photo: A mother holds her son tight after the crash. (AAP: Paul Braven)

Specialist trauma teams were on campus to offer help to children who saw “unimaginable sights”, Education Department secretary Mark Scott said.

NSW Education Minister Rob Stokes said it would take years for the school community to heal.

“This will be a tragedy that will have consequences for many days, many weeks, many months and many years ahead,” he said.

On Tuesday night, more than 100 students and adults gathered outside the school to mourn the death of the two boys.

Flowers laid at school

Photo: Children lay flowers at the gate of Banksia Road Public School the evening after the fatal car crash. (ABC News: Jean Kennedy)

Source :