Mold, formaldehyde... A study highlights the poor air quality in certain school classes.

30,000 cases of asthma are preventable each year in primary schools in France, according to a study by Public Health France. The cause is the presence of mold in the roofs and walls of certain establishments, linked to infiltration into humid areas. Ventilate and ventilate much more frequently  In classrooms, we can also find formaldehyde, a chemical substance present in certain floor coverings and paints.