Weapons like knives, meat cleavers - even an axe - have been seized in schools across the region over the last three years. Tonight we can exclusively reveal how police have dealt with dozens of offences involving weapons in schools - with children as young as 13 being arrested.
Hundreds of pupils have also been excluded. It comes after a teacher was stabbed to death at a school in Yorkshire.
Sarah Cooper has been to meet Rhyce Pope, who left the Oasis Academy on the Isle of Sheppey, who's been home-schooled for the last nine months, because he was too scared to go back into the classroom.
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Essex Police say that they can't comment on Martin Goldberg's death, but there were indications of an attempt to destroy evidence.
Police say indecent images of children have been found at the home of a deputy head teacher, who was recently found dead.
Essex Police say pictures of boys undressing have been discovered in the home of a teacher who's been found dead.