Raed Darwiche, the father of a boy killed in the tragic Sydney classroom crash, has forgiven the driver responsible in an act of remarkable compassion.

In a video filmed from the hearse carrying his eight-year-old son Jihad’s coffin, Mr Darwiche, through a translator, said he wished no ill will on Maha Al-Shennag, 52, who faces multiple charges.

“The father says all the threats to this lady, the abuse, is not from them,” the translator, Ahmad Hraichie, said.

“No retaliation is coming from the family of the boy. They have forgiven – if anything they want to sit with this lady and tell her we forgive you.

“When all of this is over, she is welcome to come and sit with the family, have a meal and talk about how they can move forward.”

The Facebook video has been viewed more than 110,000 times.

“This is the true example of patience when a tribulation affects your life,” Mr Hraichie wrote in the caption.

The boy’s casket was carried by a dozen pallbearers down the steps of the Lakemba Mosque as about 300 mourners spilled onto the street.

Many were in tears as it was loaded into the white hearse for the short drive to a nearby cemetery. The hearse was accompanied by a police escort.

Mr Hraichie told AAP that Jihad’s death had hit him “close to his heart”. He applauded the father’s strength.

Mourners embrace at the funeral of one of the boys killed in an accident at Banksia Road Primary School. Photo: AAP

“I can only hope to be half the man he is.”

The two eight-year-old boys were killed on Tuesday when an SUV driven by Ms Al-Shennag crashed into the classroom, where 24 students were learning.

NSW Police on Thursday said she had been additionally charged with dangerous driving occasioning grievous bodily harm and causing actual bodily harm by misconduct.

She was initially charged on Tuesday with two counts of dangerous driving occasioning death with negligent driving occasioning death.

On Wednesday, a lawyer for Ms Al-Shennag said she was “distraught” and “deeply sorry for the loss and hurt suffered”.

About 300 mourners attended the funeral for Jihad Darwiche on Thursday. Photo: AAP

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

NSW Ambulance paramedics treated 17 children and one female teacher at the scene.

Two eight-year-old girls and a nine-year-old girl were taken to hospital on Tuesday. Two of them were released on Wednesday afternoon.

The school reopened with specialist counsellors and additional teaching staff from nearby schools.

Classes have resumed at the Banksia Road Public School as the community grieves. Photo: AAP

A makeshift memorial outside the school gates has been growing, with students, parents and teachers leaving flowers, tributes and balloons.

Ms Al-Shennag, whose licence was suspended on Tuesday, has been granted conditional bail.

She is scheduled to appear at Bankstown Local Court on November 29.

– with AAP