The Canberra mother of a Calwell High School student has disputed an government official’s claim that recent reports of student violence on campus were “rare,” saying her Year 8 child has endured multiple attacks and security lockdowns after students formed violent mobs during staff shortages. This comes after the school was forced to ban two cohorts of Year 7 and 8 students after school inspectors found they were allegedly subjecting teachers and administration staff to abuse and sexualised violence and behaviour daily. Calwell High School in Canberra was issued with a WorkSafe Act prohibition notice on April 4, after workplace health and safety inspectors found that due to a chronic shortage of staff there were a growing number of Year 7 and 8 student mobs who would physically target and assault other students and teachers, The Canberra Times reported. Canberra is experiencing extreme staff shortages across many of its public schools due …