A Sydney woman has pleaded not guilty to manslaughter after she allegedly crashed her car into a primary school classroom in the city's south west, killing two children.

Key points: Maha Al-Shennag showed little emotion as a judge committed her to stand trial

Maha Al-Shennag showed little emotion as a judge committed her to stand trial After the incident, her lawyer Nick Hanna said his client was "very distaught"

After the incident, her lawyer Nick Hanna said his client was "very distaught" She pleaded guilty to several lesser charges over the incident today

Maha Al-Shennag was dropping her child off at Banksia Road Public School in November 2017 when the Toyota Kluger she was driving careered out of control and into the classroom.

Two eight-year-old boys died as a result of the crash, while several more children were injured.

Ms Al-Shennag, a widowed mother-of-four, was charged with nine offences including manslaughter and negligent driving after the crash.

She appeared in the Burwood Local Court today and pleaded guilty to two counts of causing bodily harm by misconduct and one count of dangerous driving occasioning grievous bodily harm.

Those charges relate to three children who were injured in the crash.

However, she pleaded not guilty to the more serious charges relating to the deaths.

Maha Al-Shennag with her lawyer Nick Hanna (R) and a friend (L). ( ABC News: Jamie McKinnell )

The manslaughter charges were laid in June last year, seven months after the crash.

Ms Al-Shennag's lawyer, Nick Hanna, told the ABC those charges carried a maximum penalty of 25 years imprisonment.

"Ms Al-Shennag has made clear to the prosecution that she's willing to plead guilty to the original charges of dangerous driving causing death, which are very serious charges," he said.

"However, we don't think it's appropriate she plead guilty to the more serious charges of manslaughter in the circumstances of this case, particularly bearing in mind that, on all accounts, it was a tragic accident."

Ms Al-Shennag showed little emotion in court as Magistrate Alison Viney ordered her to stand trial in the Parramatta District Court.

The trial will take place either late this year or early next year.

Family forgives

At the funeral for one of the boys killed in the crash undertaker Ahmad Hraichie posted a live video to Facebook as he was driving a hearse with his father and the coffin.

The pair broadcast a message of support for Ms Al-Shennag, saying threats to the woman were not from the family and she had been forgiven.

Ms Al-Shennag's lawyer Nick Hanna later said his client heard the message and was grateful for the compassion.

She was "very distraught" about the incident, he said.

Parents collected their children from the school after the car ploughed into the classroom. ( AAP: Paul Braven )

Police said they did not believe the incident was intentional.

The crash was described as a "scene of carnage" unfolding into "pandemonium" as NSW Ambulance sent 16 vehicles to help.

Ms Al-Shennag remains on bail which includes conditions that ban her from being in the driver's seat of a motor vehicle.