A California High School is spending $15,000 on sensor that will detect when shots have been fired in the school. For half that expenditure we could train every staff member, student, and parent in a variety of crisis response techniques that will prevent violence, help them to survive a violent event, and prepare them for much more likely crisis events.
If a school has that kind of money they should spend it on empowering their people, not purchasing a sensor that tells you the *&&^ is hitting the fan!