Jack Davey’s family visits Auburn South Primary School to read messages left for their boy

The family of a young boy killed in a crash at a Melbourne school have visited the site for the first time since the tragedy, reading notes and messages left in the 11-year-old’s honour.

Jack Davey was sitting with friends when a car slammed through a fence and into a group of Year 5 students at Auburn South Primary School on Tuesday afternoon. He was critically injured and died on the way to hospital.

WATCH THE VIDEO ABOVE: Community mourns death of school student as two others recover in hospital.

A mountain of floral tributes is building outside the talented junior athlete’s school, along with notes to both the boy and his family.

His mother, dad and siblings visited the memorial on Wednesday afternoon to read all the messages left in his honour.

His father wore his son’s backpack and his sisters left teddy bears.

Four other children — two 11-year-old girls, a 10-year-old girl and a 10-year-old boy — were seriously injured in what police have described as a tragic accident.

7NEWS understands the children suffered broken bones and upper body injuries.

Two of the children remain at Royal Children’s Hospital in a stable condition.

Two of their classmates are stable at Monash Medical Centre and Dandenong Hospital.

Jack’s death has sent shockwaves through the tight-knit community. An online fundraiser set up to support his family has raised more than $71,000.

“I have no words, to be honest with you. They are the most beautiful family. They would do anything for anyone,” Lucy Pristel, the mother of Jack’s friend, said.

School principal Marcus Wicher said remarkable courage has been shown following the crash.

“Our thoughts and heartfelt sympathies are with Jack’s family and friends and our thoughts are also with the four students who remain in hospital and, of course, their beautiful families,” he said.

“The response from our local community has been overwhelming, I extend my heartfelt thanks to everyone. Together we will get through this.

“Our focus is now on supporting our school community, our children, families and staff.”

Victorian Premier Jacinta Allan described the incident as “a deep and terrible tragedy” felt by families right across the state.

What caused a mother on school pick-up to lose control and slam through a fence and into a multi-purpose sports yard is now under investigation.

It is believed the Hawthorn East mother, 40, may have suffered a medical episode but police say it is too early to determine exactly what happened. She has been interviewed by detectives.

7NEWS understands the woman’s children also attend the primary school and had been at the school for a two-hour meeting before the crash. While she recently got her license, she has a clean driving history.

No charges have been laid.