Ensure that air filtration systems in schools are easily accessible for maintenance.  Clean ducts and change the filters regularly.

Maintain air moisture at a comfortable level so that air does not become too dry or too moist.

Remove wall-to-wall carpeting, which can harbor dust, dust mites, and molds.  A combination of linoleum, tile or terrazzo flooring and dry-cleanable area carpets is ideal.

Instead of chalkboards and chalk, use whiteboard and water-based markers.

Make sure that only odor-free cleaning products are used and that they are stored securely.  Have cleaning done after school hours when students are not in the building.

Carry out painting renovation projects in early weeks of summer just after classes finish and let the school air out before students return in September.

Schools can obtain a free copy of
"CLEAN AIR IN OUR SCHOOLS-A GUIDE FOR SCHOOL ADMINISTRATORS."