News from near my home town:
At Burleson -- which has 10 schools and about 8,500 students -- the training covers various emergencies, such as tornadoes, fires and situations where first aid is required. Among the lessons: Use a belt as a sling for broken bones, and shoelaces make good tourniquets.
Students are also instructed not to comply with a gunman's orders, and to take him down.
Browne recommends students and teachers "react immediately to the sight of a gun by picking up anything and everything and throwing it at the head and body of the attacker and making as much noise as possible. Go toward him as fast as we can and bring them down."