More fresh air in classrooms means fewer absences

http://feedproxy.google.com/~r/sciencedaily/~3/Sw5b5wQ7yRI/130605144503.htm

If you suspect that opening windows to let in fresh air might be good for you, a new study has confirmed your hunch. Analyzing extensive data on ventilation rates collected from more than 150 classrooms in California over two years, the researchers found that bringing classroom ventilation rates up to the state-mandated standard may reduce student absences due to illness by approximately 3.4 percent.

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