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A boy who died after inhaling a drawing pin suffered extensive brain damage, an inquest has heard.

The parents of a boy who died after he swallowed a drawing pin said he had been "the light of their lives".

Colour-coded drawing pins determine key entryways and exits to ensure they are carefully watched.

Collectively, the array has a resolution equivalent to being able to see a drawing pin in New York from London.

Hardback books, Jenga blocks, drawing pins, and even plaster casts were thrown at teachers and classroom assistants - others were punched in the face or bitten, and some were threatened by pupils with knives and scissors.