Hayley finds out why teachers are striking
The teacher protest against badly behaved pupils at a Lancashire school has gone ahead.
Staff at Darwen Vale High School say they need more help to deal with the kids, who they say are out of control.
The protest means there'll be no lessons for the 1,150 pupils at the Blackburn school.
The head teacher sent out a letter saying that the school was sorting the problem, but the teachers still aren't happy. Hayley went to find out more.