This guidance provides common-sense measures for preventing, diagnosing and resolving most indoor air problems with minimal cost and involvement. This guide helps schools understand how IAQ problems develop, the importance of good IAQ and its impact on students, staff and building occupants. One section provides suggestions for dealing with an IAQ crisis and for communicating IAQ information to students, staff, parents and the community. The document also includes information on typical indoor air pollutants and pollutants from motor vehicles and equipment. The appendices of this guide offer detailed information on IAQ-related topics.You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.