Police Scotland have confirmed they are "reviewing an incident", after a video appearing to show a girl being attacked by another pupil in the grounds of a Scottish Borders secondary school was posted online.
The footage shows a pupil at Galashiels Academy being wrestled to the ground by an older girl, before being pushed and having her hair pulled.
It reportedly happened on the school driveway last week and was witnessed by several pupils including one who filmed it on a mobile phone.
The incident was posted on Facebook by a parent in an attempt to shame the school and Scottish Borders Council into taking action.
After Ms Cleghorn posted the video on her Facebook page it was seen more than 50,000 times, and shared 1,000 times within 12 hours.
Galashiels community councillor Pauline Ward said it was "horrifying".
Scottish Borders Council said: "The school was made aware of this video last week and appropriate action was taken with Police Scotland also notified of the incident."
"We take any allegations of bullying very seriously and the Council's education department works closely with schools to investigate and ensure appropriate action is taken, including involving Police Scotland where necessary."
Police Scotland told ITV Border: "Police in the Borders were alerted to a video on a social media website on Wednesday, September 27, after concern was raised for those involved."
"Officers are currently reviewing the incident and are working with all parties to establish the circumstances.”