Schools should display posters warning pupils to respect teachers . Union officials say signs are needed as increasing number of staff abused . Comment: A further 23 % were threatened with violence and 16 % were attacked .
Schools should display posters warning pupils to respect teachers . Union officials say signs are needed as increasing number of staff abused . Around 82 % of NASUWT members were verbally abused by pupils in 2014 . A further 23 % were threatened with violence and 16 % were attacked .