Air circulation in classrooms

COMMENT: According the CDC guidelines for the reopening of schools, “Improving ventilation is an important COVID-19 prevention strategy that can reduce the number of virus particles in the air. Along with other preventive strategies, including wearing a well-fitting, multi-layered mask, bringing fresh outdoor air into a building helps keep virus particles from concentrating inside. This can be done by opening multiple doors and windows, using child-safe fans to increase the effectiveness of open windows, and making changes to the HVAC or air filtration systems.” My question/comment is: how come the classroom windows are not being opened to help with the air circulation?

RESPONSE: Many teachers are opening windows in the classrooms. Every classroom by state law has an air circulation system that sends fresh air into the classrooms 24 hours a day so air is circulating.

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