When kids return from their holidays, they often take a shell into school to 'show and tell' what a great time they had on the beach.
And that's exactly what a 10-year-old boy at St Margaret's Church of England Primary School, in Bowers Gifford, Essex did.
Only it was an explosive Army shell – and it led to his entire school being evacuated!
The Year 5 pupil proudly presented the 20cm shell to his class before teachers quickly realised it was an explosive and 250 pupils were led to safety.
Staff say a teacher took the potentially lethal device to a field. But pupil Harvey Harris, 10, claims he carried it.
He said: "A boy brought it to school on Wednesday but no one knew what it was. Then another boy and I were asked to carry it outside."
An Army bomb disposal unit was scrambled to the field and found the device was not dangerous.
Harvey's mum Melissa Harris, 30, said she was 'horrified' by her son's claim and would be speaking with the headteacher at.
Headteacher Emma Wigmore insisted a tutor carried out the shell and added: "We are happy with how quickly everything was dealt with."