The school professional is in a unique position to play a strategic role in the early identification and prevention of youth suicide. The current study assessed North Queensland teachers' knowledge on youth suicide. The sample comprised 201 secondary school teachers. A survey research design was used and data was collected using a self-administered questionnaire. Teachers scored, on average, 69% of the knowledge statements correct; however only 15% correctly recognized a high-risk situation. There was substantial variability in the accuracy of knowledge on youth suicide with some teachers maintaining high levels of knowledge, and others having very little accurate information. Findings highlight the need for youth suicide education for teachers in order to fulfil this "gatekeeper" role in dealing with suicidal students. (Contains 2 tables.)