The Gab-Stopper is an audio monitoring and feedback tool designed to help children (grades K-12) function quietly in the classroom. Using brightly colored graphics, Gab-Stopper provides easy feedback in the form of a standard traffic light. Green indicates acceptable voice levels; yellow means warning and indicates increasing voice levels; red means alert and indicates sound levels are unacceptable. Optional warning and alert sounds can be played on the computer to remind young ones to settle down. As an incentive, Gab-Stopper provides an automatic score indicator ranging from 0 to 100. If voice levels are kept low, the score increases. If voice levels rise, the score decreases.