A schoolgirl suffered a perforated eardrum after allegedly being attacked by five other pupils who filmed the incident on video mobile phones.
The 15-year-old was walking home from Colton Hills School, Wolverhampton, when the incident happened.
She said she was chased and kicked in the head leaving her with bruising, two loose teeth and a burst eardrum.
Two pupils have since been expelled from the school and police are investigating the incident.
The incident follows an attack on a 16-year-old girl from Manchester earlier this week which was also recorded on a mobile video phone - a craze known as "happy slapping".
The teenager was knocked out and suffered temporary paralysis.
Speaking to BBC WM on Saturday the mother of the 15-year-old Wolverhampton pupil said she thought it was an unprovoked attack.
"She was walking home from school and the gang of children that were there actually spoke to her and said hello as she walked past," she said.
"They then chased her and attacked her. They were kicking her in the head and got her on the floor.
"She got damage to her ear and she was obviously shaken up and they were videoing the attack.
"According to my daughter, there were five children videoing her."
She praised the way the school had dealt with the incident but said she wanted to see tighter controls introduced in relation to children getting access to video phone technology.
"The school could not have done any more... they have bent over backwards to help her, to help me and to help the police. They have been brilliant.
"I just think that kids have got nothing better to do.
"I really do think that they have seen it, it started at some point and they've got the video of other children being attacked on their phones and they think it is the natural pastime for now.
"But I do think there should be some kind of age limit, the same as alcohol and cigarettes, with this sort of technology with the children."