The NASUWT has produced a series of hard-hitting posters making it clear that the physical and verbal abuse of school staff will not be tolerated.
The Union is calling on all schools to display the posters prominently as part of its campaign to ensure employers make a clear commitment to protect teachers from abuse from pupils, parents and other visitors.
The posters reflect the campaigns used by other organisations such as NHS hospitals, GP surgeries and railway stations, which make clear statement that abuse of staff is unacceptable.
Teachers can download the latest posters and the NASUWT is encouraging members to urge their employers to display them prominently in school.
More than eight in ten (82%) teachers say there is a widespread problem of poor pupil behaviour in their schools today, and pupil behaviour has now risen to be the second biggest concern that teachers tell the NASUWT they have about their job, after workload.
And over half (57%) of teachers told the NASUWT in a survey carried out earlier this year that they had been subjected to verbal abuse by a pupil in the last 12 months while 27% said they had been verbally abused by a parent or carer.
A significant minority (18%) had received threats of physical assault by a pupil in the preceding 12 months and 14% had actually been physically assaulted.
Only just over a third (37%) said they felt supported by senior managers to deal with behaviour.