On 11 November 2020, former Assistant Principal Ian Wilson pleaded guilty to two charges involving indecent acts while working at Dilworth. Wilson had earlier been convicted of doing an indecent act with a boy under 12 years in 1996 while serving as Senior School Assistant Principal at MacMurray Boarding House. In late November, it was reported that a former 69-year old Scout Master, whose named was suppressed, facing charges of indecently assaulting a boy in the 1970s had died from cancer.