The indoor environment in schools or childcare often poses a risk to the health and learning performance of children. Anyone who ever visits a school or childcare center knows the symptoms of a bad indoor climate: stuffy classrooms, dusty rooms, fogged windows, stuffy air.
The poor quality of the indoor environment causes discomfort, stress and problems with maintaining attention. In addition, a poor indoor environment increases the infection pressure, which increases absenteeism. All of this has a negative effect on learning and teaching performance.