Police and  two air ambulances were called out to Ysgol Dyffryn Amman Valley School  a Welsh secondary school, in Ammanford, Carmarthenshire, after Liz Hopkin (53), a special needs teacher was stabbed in the neck four times by a female pupil during an attack is seriously ill but has been sent home to recuperate. Three people and a  pupil were injure in the attack at around 11:!5am on Wednesday. Worried parents waited for several hours at the gates of the school, which was “in lockdown”, before being tearfully reunited with their children as the school day ended. A teenage girl has been arrested on suspicion of attempted murder, Dyfed-Powys police say. Darren Campbell, a hero teacher tried to restrain the girl with the knife in south-west Wales, according to his brother Cefin Campbell, a Plaid Cymru, member of Senedd (MS). The teacher retired last year but was re-hired on a part-time basis.