Here’s why I downvoted:
It actually would have been better if neither your son nor you knew about nearby shooting.
It had nothing to do with the school your son was attending. That you responded in a panic is due to a common pattern of miscommunication during an emergency. The least effective response to an emergency is everyone panicking and operating independently of each other and ignorant of the ground truth.
How did the rumor of the school shooting begin? Probably from another student responding to some quick take on their socials? What if they didn’t have their phone? Would this even have caused a false panic in the first place?
Everyone take the time to look up the road death statistics to remind yourself what you really need to worry about. Always use your turn signal, even for your driveway. Slow down, but not too much… drive with the flow of traffic. Don’t change lanes in an intersection. Don’t swerve out of the way of a white-tailed dear, just try and punt the thing with the front of your car and count the hang time. Yield to the right at a 4-way intersection. Again, always use your turn signal, even for your driveway… why the drive way? Force the good habit!
I live in Texas. My wife is a public schoolteacher. We are coming for your son’s phone and we will convince enough people to agree with us.