AMONG THE VANDALISM PREVENTION TECHNIQUES LISTED, THE AUTHOR SUGGESTS PREPARING DEVICES THAT LOOK LIKE BURGLAR ALARMS, BUT ARE ACTUALLY 'FALSE ALARMS' MADE OF LOW-COST MATERIALS, SUCH AS DEAD BATTERIES WITH WIRE STRUNG BETWEEN THEM. IT IS ALSO RECOMMENDED THAT TEACHERS LOCK UP ALL TOOLS, LOCK UP COMPONENTS OF SOUND EQUIPMENT IN DIFFERENT PLACES, AND ENGRAVE VALUABLE ITEMS IN THE CLASSROOM....KAP