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.