Background: Nonsuicidal self-injury (NSSI) is an increasing and serious concern in schools. The purpose of this study was to determine the suitability of a new policy for responding to NSSI in schools. Methods: Teachers and other school staff, including year level coordinators, psychologists, and counselors, N?=?48, reviewed a policy for addressing NSSI in schools and provided written feedback. Results: The majority of staff worked in schools without a policy regarding NSSI, or were unsure whether their school had such a policy. Participants were generally positive about the presented policy and supported its implementation in schools. Perceived challenges to policy implementation included a lack of knowledge about NSSI among staff and limited referral services available to students who self-injure. Suggested changes included developing a flowchart of the referral process and increasing collaboration between school staff, changes which were subsequently implemented. Conclusion: Awareness and education for school staff regarding NSSI combined with school policies for responding to adolescents who self-injure are recommended to enhance management of NSSI in schools, and improve the health and well-being of adolescents who self-injure.