What causes high noise levels and other acoustical problems in classrooms?
• Most noise problems are caused by excessively loud heating-ventilation-air conditioning units (HVAC) • Other noise sources in the classroom include the lights, AV and electronic equipment, pencil sharpeners, aquariums, and children moving about the room and talking • Street and playground noise from outside the building penetrates classrooms • Hallway and adjacent classroom noise also infiltrates the classroom.
