Transdiagnostic interventions are efficient treatments for common youth mental health concerns and may be particularly well suited for school-based practice. Implementing them can potentially strengthen school psychologists' identity as mental health practitioners. Some student problems may benefit more from direct school psychological services than consultation. School psychologists may wonder if it is possible to incorporate direct mental health intervention into their practice. Even when time allows, other questions arise such as upkeep of competency in mental health interventions and how provision of mental health supports fits within a school's existing system. The purpose of this article is to define and propose transdiagnostic intervention as a fit for contemporary school-based mental health practice. It also share practical resources that practitioners can access for training and implementation support.