The Sydney schoolboy who has become a focus of global bullying outrage says he was provoked into the schoolyard fight in which he was thrown heavily to the ground by a bigger, older student.

The year 7 student, who appears to be the antagonist in an ugly video that has gone viral on the internet, told the Seven Network he was also a victim of bullies.

"I got bullied at primary school," he told Seven last night.

His appearance on TV last night followed a Channel Nine interview with the older boy on Sunday, which child psychologist Dr Michael Carr-Gregg called "reprehensible", warning of the potential for further victimisation and self harm.

The year 7 student is depicted as the bully in the video, throwing punches at a year 10 boy, who then picks him up and throws him heavily to the ground.