Cyberbullying can be harder to detect than traditional bullying, but its impact on students’ wellbeing and learning can be long-lasting. This guide equips teachers with practical strategies to recognise the warning signs of cyberbullying, from sudden behavioural changes to shifts in online activity and academic performance. It outlines proactive methods to identify, address and prevent online harassment, including fostering open communication, engaging parents, and using anonymous reporting tools. By using this resource, educators can build safer, more supportive classrooms where students feel protected both online and offline.