From the Bodyguard Blanket web site:
Bodyguard™ blanket was developed and tested to specifically protect our children and teachers in the event of a school shooting. Bodyguard™ blanket is designed to be bullet resistant. It is made of the same materials our U.S. soldiers wear while in battle, and is equal to or exceeds the protection used by our police departments. After extensive research, it is estimated that Bodyguard™ blanket provides bullet resistant protection against 90% of all weapons that have been used in school shootings in the United States. We are so confident in the protective properties of Bodyguard™blanket we are encouraging every administrator to make it an integral part of school and university lockdown protocol.I'm sorry, but if things are so bad that your kids need access to bulletproof blankets at school, perhaps it's time to rethink your education options.