Six pupils have been suspended from a West Bromwich school after being identified on a video which showed an attack on an elderly couple's home.
The Menzies High School youngsters, aged between 11 and 13, were videoed by pensioners Bill and Margaret Yarnall as they hurled bottles at their home.
Images of the lunchtime attack on the house near the school were shown to the deputy head, John Fletcher.
He said he was appalled and some of the suspensions could be made permanent.
Mr Fletcher told BBC News that, following the video evidence, parents of some of the pupils involved had been contacted.
He said only about 60% of the pupils involved had permission to be out of school during the dinner hour and were supposed to go home.
He said he had impressed on the parents the need for supervision at lunchtime.
Police are also investigating the incident, in which as many as 17 youngsters were thought to have been involved.
The couple were said to be terrified by their ordeal, which they say has been going on for the past year.