Howard Stern made in interesting point this morning, and I think he's onto something. He said that there should be "choke points" in schools and there should be a cop/guard at those choke points.
This Cruz fuckhead had no business being at the school to begin with, so how did he get inside? Looking at Google Maps, I see that there are 4 entrances, no gates, no fence. So getting on the property is easy. If it was anything like when I went to Olentangy, there would be multiple doors that you could enter/exit the building without anyone monitoring it.
To Howard's point. Perhaps there should be a fence, and during school hours there should only be one entrance/exit onto the property and one set of doors into the building with a guard.