NSW police are investigating allegations a child with autism was disciplined by being locked in a dark cupboard at a Newcastle school.
The boy's father, David Roy, raised the allegations of abuse against his seven-year-old son at Kotara South Public School.
Mr Roy said his son, who is now home-schooled, was traumatised.
"It's suggested that he was locked in a darkened cupboard with heavy objects around him," he said.
"He is indicating to us that he was grabbed and hit."
Mr Roy said his son shuts down when remembering the alleged abuse.