evidence: Fifth Of NI School Staff Assaulted Once A Week One in five school staff in Northern Ireland are assaulted once a week, according to a recent survey. [...] The Chair of the NIC-ICTU Education Group Denise Walker (GMB) said: "Everyone expects and is entitled to go to work free from the threat of physical violence but if you work in one of Northern Ireland's schools in a support role, you could be one of the 51% who have been subjected to a physical incident at work. 43% of whom reported having been a victim of physical violence weekly.