Pupils who spot bullying at their school in Greater Manchester are telling their teachers by text message.
The scheme was set up because students felt happier texting their teachers than talking to them face-to-face.
The texting must be done out of school hours because mobile phones are banned in the classroom.
Some pupils at St Mary's RC High School in Tyldesley have also been trained as mentors for bullying victims. It's hoped the measures will cut bullying.
Associate deputy head teacher John Proctor said: "They may not be willing to push a note under a teacher's door, but they would send a text."
The company that developed the technology has also invented a way of texting parents when their children are absent from school.
St Mary's hopes to use the same system to allow parents to look at their children's exam results.