Only if etched on the outside of bullet proof shelters.
I can't comprehend the level of stupid required to get to that conclusion.
I already mentioned that he's an idiot, I tell you why I think he is. He should know that the 10 commandments are a nice "not-to-do-list. They have never been effective though. The church has never prevented killing by their ten commandments. Think of the crusades. Think of the inquisition, think of all the murderers nowadays that did attend church every Sunday. Very faithful.
Rules are to be broken. The threat of Hell or legal punishment helps only with the people that would not commit a crime anyway. They can tell I don't kill because the bible forbids it. Ha! Everybody that has reached the age of (somewhat) reason, knows that.
If the senator wants to use the schools to prevent these murderous events he might be somewhat successful by stimulating teaching the kids what compassion is. Make the kids realize what the result is of their actions. What it does in the mind of the other child. Role playing, switching roles, etc., etc., etc. People nowadays are so individually and self-centered that they often have no idea what other people think or feel about each other, other than he/she looks great or ugly or average.
It would help against bullying, helps equality of male and female and certainly will help in the process of choosing friends and partners.
You know what, there were no shootings during biblical times.
Wow! Gotta wonder why...
And, potentially, a gust of wind could have blew just the right amount of dust on the firing pin to create a misfire. Or maybe the ten commandments could have been written on stone and the stone could have fallen in front of the shooter, and he tripped over it causing his pants to fall down, and he took his guns and went home due to embarrassment....could happen. Potentially.