Teachers at a secondary school have striked over poor student behaviour, their union representatives said.
Some teachers at Westbourne Academy in Ipswich refused to work on Tuesday and said they would carry on their action on Wednesday, with further strike days planned for next week.
The National Association of Schoolmasters Union of Women Teachers (NASUWT) cited "untenable levels of classroom disruption" including pupils refusing to attend lessons and "roaming the school".
A spokesperson for Academy Transformation Trust, which runs the school, said it "recognised the challenges" and was working with union representatives "to understand concerns and to support all colleagues".