5-year-old kids are learning to survive school shootings with a nursery rhyme to the tune of 'Twinkle, Twinkle, Little Star'

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Students filing out of Marjory Stoneman Douglas High School in Parkland, Florida, during an active shooter situation in February 2018.

• A mom shared a sign in her daughter's kindergarten in Somerville, Massachusetts, which teaches children how to hide from active shooters.
• The instructions, which rhyme, can be sung to the tune of "Twinkle, Twinkle Little Star."
• Geogy Cohen added that her child had been practising live shooter drills at pre-kindergarten classes.

A kindergarten in Massachusetts is teaching children how to survive school shootings with a reworked nursery rhyme that shares a tune with "Twinkle, Twinkle Little Star."

Geogy Cohen, a digital media professional, on Wednesday posted a sign from a classroom at the kindergarten her daughter is due to start attending in the fall. It reads:

Lockdown, lockdown, lock the door

Shut the lights off, say no more

Go behind the desk and hide

Wait until it's safe inside

Lockdown, lockdown, it's all done

Now it's time to have some fun!

The kindergarten is in Somerville, a city northwest of Boston, Massachusetts, the Boston Globe reported.

Cohen said her five-year-old daughter had been practising active-shooter drills at her pre-kindergarten program.

"Z was excited about it as a game to see if you can stay quiet for 'one whole minute,'" she tweeted.

Schools in the US have stepped up their security measures to prevent gun violence. The government also set up a federal commission on school safety after a deadly school shooting in Parkland, Florida, earlier this year, but is not looking at the role of guns in schools.

Earlier this week, outgoing eighth graders were given bulletproof shields to protect them from attack once they start high school.

There have been more than 20 school shootings this year alone.