A group of secondary school teachers has made a powerful video highlighting the impact of the bullying they suffered at school, to the pupils they now teach.
Staff at Perins School in New Alresford, Hampshire, took part in the emotional film that has been posted on the school website and shown to students in assemblies.
They say it is important to talk about these issues in the hope that pupils will feel they can come forward when they have problems.
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Reporter: Sophia Seth