How to survive a School Shooting: A through plan ready to implement

Guess what is the number one mission of a public school? Have the kids learn their alphabet, addition or subtraction, algebra perhaps calculus or trigonometry? The answers to all those questions is NO. The number one objective of our school districts is the same as our government and city officials, to keep everyone SAFE. This if not successful is enough reason to dismiss to the entire school board, superintendent, school principals and administrative officers. It is a terrible tragedy that everyone should be prepared in order to prevent it. A step by step guide on how to face this threat in simple words.