Image: Youtube/Sandy Hook Promise

The video shows “back to school essentials” can be used to survive a school shooting.

The families of the children killed in the horrific Sandy Hook massacre have release a haunting ‘back-to-school’ video almost six years on since the terrible event.

The chilling video shoes how “back to school essentials” can be used to survive a school shooting.

It starts out normally enough, with kids showing off their new bags and snazzy folders.

However the mood shifts, when one boy puts on his headphones and fails to see people behind him running from gunshots.

It ends saying “school shootings are preventable if you know the signs”.

The video has been published by Sandy Hook Promise, a non-profit organisation led by the families of children killed at the Sandy Hook primary school in Connecticut in 2012.

On 14 December 2012, 20 children – aged between five and 10 – and six staff members were killed at Sandy Hook when a gunman opened fire with a semi-automatic rifle before killing himself.

“We don’t want people to turn away from it, so pretending it doesn’t exist is not helping to solve it,” said Nicole Hockley, whose six-year-old son Dylan was killed at Sandy Hook.

“At the end, the girl with the phone gets me every time,” she told NBC.