The story book is the creation of a team of doctors behind the Citizenaid app, which advises users what to do and how best to help if there is an active gunman or knife attacker or a suspected or exploded bomb.
'Moggy's Coming' uses the story of a cat's attack on a school of mice to educate youngsters on the broader UK police message of "run, hide, tell" in the event of a terrorist attack.
"In secondary school, we have teacher-led discussions about a shooter in a school. It is very clear these are very unusual, very unlikely situations and it is about being prepared, not scared," he said.
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The book tells the tale of a school of mice preparing in case of a cat attack, with teachers telling pupils to run, or if that is not possible hide, tell the police and treat injured classmates.
It then shows them putting their preparation into practice when a cat turns up.
It includes words that can be sung to the tune of the nursery rhyme 'London's Burning': "Moggy's coming, Moggy's coming, we're in danger, we're in danger, run, hide and tell! Treat the hurt mice, treat the hurt mice!".
Separate materials for slightly older children show a lion escaping from the circus and getting into a school where it scratches some pupils in the playground.
Teachers are encouraged to discuss with their classes how it makes them feel, as well as the practical measures they might take in such a situation.
From Birmingham, the message is expected to be taken UK- wide.
Chief Superintendent Jo Chilton, head of the National Ballistics Intelligence Service said: "The Citizenaid message is a critical one and has the full support of the National Firearms Independent Advisory Group.