at Brisbane Boys College, Brisbane. The KGS Pipes and Drums took first place in Grade 4 for both the overall band and the Drum crops, hence the band was crowned Grade 4 National Champions. The KGS Drum Corps won National Drumming Championships in 2016 and 2018. Notable alumni Alumni of Knox are known as "Old Knox Grammarians" or "Old Boys", and may elect to join the schools alumni association, the Old Knox Grammarian's Association (OKGA). Controversies Sex offences by teachers The school attracted widespread media coverage in 2009, when criminal charges were laid against five former teachers for alleged sex offences between 1976 and 1990. All five teachers were subsequently convicted. Royal Commission hearings the Royal Commission into Institutional Responses to Child Sexual Abuse is conducting public hearings (commenced on 23 February 2015) concerning the response of Knox Grammar, and the Uniting Church, to complaints and criminal proceedings involving teachers who sexually abused students. The commission will examine the "systems, policies and procedures" involving the school's response to the complaints since 1970 and the experiences of former students sexually abused by teaching staff. The royal commission is expected to conclude in December 2017. During hearings in early March 2015, several former Knox students and staff alleged that headmaster Ian Paterson did not refer several allegations of sex abuse he received to the police, despite there being a requirement for such allegations to be reported from 1988. The commission heard that in fact Paterson had never reported any student's allegation of sexual abuse to police during his thirty years in charge of the school. Paterson also stated that he had allowed several teachers accused of sexual abuse to resign and subsequently gave them positive references. Paterson denied that he had covered up the sexual abuse of students, arguing that he had responded to the allegations brought to his attention, and stated that "I should have known and I should have stopped the events that led to the abuse and its tragic consequences for these boys in my care and their families". Paterson stated that he was not aware that it was a crime for a teacher to grope or sexually proposition a student. Following the section of the hearing concerning Paterson, the then headmaster, John Weeks, stated that the school had changed considerably since the end of Paterson's period in the role and that Knox's Paterson Centre for Ethics and Business