In a recent survey Califone, maker of excellent school headsets, asked teachers if they’d seen their students chew on the cords that attach to headsets. Sixty-eight percent replied that they had. Apparently, chewing on cords by students has been a problem dating back to the 1950s. Besides the issue of sharing headsets and health issues that may arise, there’s the problem of damage to the cords and cost to schools. Teachers find it impossible to keep students from chewing on cords, for they can’t always see what every student is doing. The only answers to student chewing may be: continuing to remind students not to put the cords in their mouths, supervising as carefully as possible, and purchasing equipment that can stand up to “repeated and frequent mistreatment”.