"Schools don't want to be branded as a school that is afraid of having a shooting"
We won't over brand it or make it flashy, focus on making it compact and not easily noticeable.
"Prevention is better than being reactive but if someone wanted to get a gun into the school, they would"
Work in collaboration with currently existing systems, such as metal detectors, to see if we can avoid the problem altogether.
"Teachers should focus on teaching, not on this system"
The system should only be accessible by law enforcement and a school security staff, but otherwise kept autonomous.
"Sometimes the shooter blends in with the crowd on the way out and pretends he didn't do it"
The system must be able to track the shooter and keep video of the tracking so that it can be easily retraced to him/her.
"On average, an active shooter shoots a person once every 15 seconds"
Including a form of deterrent should be able to extend this time to longer than 15 seconds to reduce the number of shots before police arrive.
"A 7 minute response time for police to a shooting is considered a long time"
An instantaneous alert to police should bring down this time, instead of having someone call and explain the situation.
"The shooter typically wants a 'target-rich' environment"
The system should work just as well in a high-density area.
"Pepper spray won't kill you but it's a huge liability to schools if it does not work perfectly"
We must either have a high degree of confidence in its accuracy, or avoid using it altogether.
"If students know about the active deterrent aspects of the system, they may try to sabotage it, pull pranks with it, set it off intentionally, and so on"
The installed units should be fairly discreet and hard to tamper with (hard to reach, sheltered, etc.). There should also be regulations in place for tampering with any of these devices.