Cape Town - The video doing the rounds of a violent attack by pupils at Ned Doman High School in Athlone doesn't show everything that happened that day, says principal Gwynne Philander. The video, which was posted on social media, shows a group of pupils kicking a girl who is lying on the ground.According to Netwerk24, no one has been arrested since the Grade 9 girl's mother laid a charge of assault with the intent to do grievous bodily harm. Western Cape police spokesperson Captain FC van Wyk said police were still investigating the matter.Also read: School principal concerned about students' 'violent' videoPhilander said the fight had been at a bus stop about one kilometre from the school, and they had only heard about it three days after the incident."What we see on the video is three girls attacking another girl. What we don't see is four pupils intervening to protect the victim. What is good, is that senior pupils came to the aid of the girl and, despite a group of about 20 children, said: 'Stop, we won't allow this to happen'." The 15-year-old victim and her parents were at the school on Tuesday. Philander suggested that the girl stay away from school if she didn't feel safe to attend class.The girl and her parents were on Wednesday supposed to have met with the pupils who'd allegedly kicked her and their parents. However, they were nowhere to be seen. The girl also wasn’t at school on Thursday.Improving self-esteemPhilander said the culprits were "very sorry about their behaviour and their parents extremely disappointed. We accept that the pupil isn't in danger any longer".The school and a social worker are working on a remedial programme to help pupils with rage management, and to help them improve their self-esteem. "People who are hurting, hurt others," he said."The children who hurt the victim had already been hurt by something else. We have to understand that a child shows his/her pain through violence and anger. We want to teach the children to work through their problems."He said the incident could be blamed on, in part, some pupils commenting on others' hair and the clothes they wear, and that's why the school wants to improve the pupils' self-esteem.Some children were also peeved at others for not sharing food."We need to understand what causes the anger experienced by our children."