A shocking video showing bullies kicking a schoolgirl in the head has been uploaded to YouTube.
The video - which Parentdish has seen and chosen not to share - shows a secondary school pupil being repeatedly kicked in the head and dragged to the floor at The Deanes School in Thundersley, Essex.
The attack was filmed by another pupil and uploaded to YouTube just hours after the incident.
During the attack a boy can be heard screaming: "Let her have it!"
An unnamed parent who saw the footage on Facebook after the attack said: "It's absolutely disgusting what happened.
"You never expect something this brutal from bullies - it makes me sick to think that this is what is happening in our school playgrounds.
"I have been told the two girls in the video are only 14 and only picked on that girl just because she is ginger."
Jan Atkinson, headteacher of The Deanes School, said: "The school is treating this incident very seriously and is taking action against those involved.
"The students concerned, including the student who uploaded the video, will not be returning to the school. The incident happened during break time and was dealt with by a senior member of staff.
"The victim was taken to hospital to be checked out. She had some bruising but is fine and has since returned to school. I have spoken to the parents of the students involved and they are confident the school will deal with the situation in the right way."
An Essex Police spokesman told the Daily Mail they were unaware of the alleged assault and confirmed no one had pressed charges in relation to the incident.
Speaking to Parentdish, Emma-Jane Cross, CEO at BeatBullying said: "At BeatBullying we work with many young people who are bullied for being 'different'- for anything from height, to the clothes they wear, to hair colour. Violent bullying because of appearance is unacceptable, and it is extremely worrying that young people are now filming this bullying behaviour and sharing it online.
"With the development of technology and the increasing number of platforms now at young people's disposal, many of the barriers that arguably acted as deterrents to traditional bullying have been removed. It is all too easy to for young people to cyber-bully when they feel they are anonymous.
"We need to take action to change attitudes and make cyber-bullying unacceptable. We call on government, the legal system, service providers and wider society to work together to address the issue.
"If you are concerned as a parent, let your child know that if they are being bullied they have a right to get help to stop it, and that you will help them yourself and support them in getting help from other organisations such as BeatBullying.
"It is important to let young people who are suffering at the hands of cyber-bullies know where they can go to access support and who is responsible for protecting them. BeatBullying.org exists so that young people are not in that position. On our site, young people can support and mentor one another in dealing with cyber-bullying."