Some primary school pupils are having special lessons to learn how to cope when they get angry.
St Ann's Primary in London teaches pupils to breathe deeply, count to 10 and walk away if they get cross with each other, instead of hitting out.
Now teachers say that there are hardly any playground fights and there is much less bullying and verbal abuse.
Exam results have also improved massively as a result of what the pupils have been learning.
Talk about anger
In the lessons kids are encouraged to talk about what makes them feel cross and upset so they can work out why they feel that way.
"When I'm angry I usually just get really uptight and I can't control myself. But now I can control myself by just walking away," said St Ann's pupil Billie, 9.
The classes started at the primary school three years ago and have proved so successful that six other schools in the area are going to give them a go.