“Roughly 20% of the U.S. population spends their days inside educational facilities, where poor IAQ can influence health, concentration, attendance, and student and staff performance.
Poor IAQ is associated with a variety of health risks and problems, including asthma, nausea, and fatigue.”

Dutch’s Home Inspections and Dutch’s Mold Inspections can test your indoor air quality if you think you’re suffering from the risks caused by poor IAQ.

This article can start you off with four easy tips for improving your indoor air right away:
http://www.buildings.com/ArticleDetails/tabid/3334/ArticleID/13088/Default.aspx

Cleveland: Is Your IAQ (Indoor Air Quality) Affecting Your IQ?