Several factors may affect the air quality of the school environment, such as air drawn from outside sources, radon system, HVAC, building materials, indoor activities, people, printers and copiers, and wet and dry finishing. Therefore, maintaining the cleanliness of all surfaces within the school - flooring, ceiling tiles, walls, windows, furniture and countertops - have an equal role in contributing to air quality in schools. Regular cleaning of these surfaces can reduce air quality problems.
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