SAFETY at public schools is in the spotlight again after a teacher was shot dead in front of her pupils at Phikiswayo Primary School in Ntuzuma.Duduzile Khumalo, 46, was shot by two unknown men when they entered the school on Monday.According to National Teachers’ Union (Natu) secretary-general Doctor Ngema, the two men entered on the pretence of searching for a lost school jersey, but instead opened fire on Khumalo in her Grade R classroom.While she tried to run away, they continued shooting at her, killing Khumalo in front of her pupils.While the incident has left parents fearful and…