Longevity of harm refers to the lasting effects that harmful experiences can have over time. In school contexts, events such as repeated exclusion, humiliation, or unsafe conditions may continue to affect a child long after the original incident has passed. The emotional, educational, and relational impacts of these experiences can shape a student’s confidence, sense of safety, and willingness to engage with learning. Recognising the longevity of harm highlights the importance of early intervention, repair, and supportive environments.