A head teacher tackled a knife-wielding teenager outside her school in Greater Manchester.
A teenager has been charged with possessing an offensive weapon after an incident outside a school.
Allison Crompton, 47, chased the 17-year old away from Middleton Technology School, near Rochdale, after he started waving a large kitchen knife at pupils.
Police said a youth was seen running down the street with a knife near Middleton Technology School, near Rochdale, Greater Manchester.
The youth chased after two boys before getting on a bus, but Ms Crompton followed and ordered him to get off.
A 16-year-old boy was injured during the incident, but his injuries are not said to be life-threatening.
Police were called and arrested the teenager nearby on suspicion of affray and possessing an offensive weapon.
A 17-year-old youth has been charged with affray and possession of an offensive weapon.
A spokesman for Greater Manchester Police said: "Officers attended and found that a 17-year-old boy was running down the street with a kitchen knife.
He is also charged with breaching an anti-social behaviour order.
I really don't think I was that heroic. I would do the same again Allison Crompton
"A 16-year-old boy was injured during the incident, but his injuries are not life threatening.
"The boy was arrested on suspicion of affray and possessing an offensive weapon.
"A 17-year-old boy has since been charged with affray, possession of an offensive weapon and breaching an anti-social behaviour order."
Ms Compton said the incident, which happened on 18 September, was "very frightening" for the children and parents.
"Extremely frightening. At the time when he pulled the knife out I thought, 'Oh my God. But I knew I had to do something.
"There was a lot of shouting and screaming."
Students ' shocked'
She said she ordered the youth off the bus in her "best head teacher's voice".
She said she told him: "'You. Get off this bus. Shift.'
"He got off quite sheepishly."
But Ms Crompton has denied she acted heroically.
"I really don't think I was that heroic. I would do the same again.
"I think I did what anyone else would have done."
She added: "I was just concerned that the incident had shocked a lot of students and waiting parents and was conscious of the threat to the safety of my students who were making their way home and wanted to make sure that they did not get in harm's way.
