Thousands of children are off school today, as teachers take part in a national strike. Teachers in Oxford are demonstrating on the streets of the city.
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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.