“…Although the majority of staff surveyed reported having support in the treatment of NSSI, only half of the staff characterized the quality of support as representing "best practice" (Marzano & Adler, 2007). Further, despite the development of guidelines (e.g., Gough, 2005) and handbooks (e.g., Pengelly, Ford, Blenkiron, & Reilly, 2008) to help staff understand and manage NSSI, it is unknown whether these are frequently implemented.…”