I don't know that I can answer that question because I don't know what be Broward County's protocols for what parties to the event were supposed to do. I can say that in my estimation, regardless of whether they do so correctly, i.e., per protocol, a number of individuals did the right things: Teachers and students fled the scene. Teachers acted to protect their students from harm, two of whom did so at their own peril. Someone called the police to the school. Someone dispatched the police. Some police officers responded to the call/dispatch. Someone informed the police of the shooter's location after the shooting. Some police officer(s) apprehended the shooter. I'm sure some of those actions have protocols and some of them do not. Of those that do, I don't know whether the guidelines were followed nor do I know who did and didn't follow them, and I also don't know the impact(s) of their following or not following protocol. For those reasons, as I wrote, I can't directly answer the question asked in the thread title.