Concussions from sport and recreational activities can negatively impact academic performance in adolescents. This study aims to use reflexive thematic analysis to understand the knowledge, management, and education of concussion among Irish postprimary educators. A cross-sectional study that involved semistructured interviews with 18 secondary school teachers was conducted. Interviews were recorded and transcribed in preparation for a reflexive thematic analysis process according to research conducted by Braun and Clarke. A total of 664 data items were coded which led to the development of 5 themes (i.e., teacher's background experience, consequences of concussion, concussion in school, educating educators, and existing standards) and 22 subthemes. The implementation of concussion education initiatives for improving student safety, injury management, and recovery through mandatory teacher-continued professional development should be explored. Teachers' knowledge of concussion is influenced by personal experiences, with safer attitudes observed in those who have witnessed or experienced concussions. The role of the Year Head in concussion management should be explored with a focus on communication pathways and dissemination of materials. Protocols for medical emergencies and academic adjustments for concussed students should be made readily available to secondary school teachers.