WARNING: Distressing video content

The mother of a Perth student viciously attacked at a northern suburbs high school says she is speechless more fights are being filmed and shared across social media.

Sherrie Prince found it difficult to watch vision of the latest attack on a Butler College student, just a month after her daughter Molly-Rose’s jaw was broken by a student at the same school.

“I'm speechless as to how much of a problem there is,” she said.

“And there's a lot of people who won't come forward - they're too embarrassed.​”

Camera Icon The victim is seen cowering on the ground. Credit: 7 News

The latest fight happened on Friday afternoon, with a teenager attacking a 16-year-old Butler College student on his bike.

The fight, which was filmed and posted online, happened just metres from the edge of Connolly Drive.

The vision shows a teen being repeatedly punched in the head before trying to escape.

The teen is then chased by his attacker and knocked to the ground, with others still recording the brutal ordeal.

The Education Department says its officers and school staff are looking into the incident.

Police are also investigating.