Note: These 10 tips can save your life and others.
Here are 10 things not to do during a lockdown drill:

1. Do not get on your phone.
2. Do not get up if you are hiding.
3. Do not make any sound that would attract anyone to your class.
4. Do not leave the lights on.
5. Do not leave the windows open.
6. Do not have your phone ringer on.
7. Do not stand up from where you are.
8. Do not open the door.
9. Do not stay in the hallway.

Last, but certainly not the least…!!
10. Do not TALK!