For rooms equipped with mechanical ventilation, it will operate all day long, without interruption, with fresh air. An extension of the operation is planned after the last class. These arrangements will allow the air to be renewed regularly during the day.
For rooms not equipped with mechanical ventilation, where possible, teachers will open windows and/or doors during classes and at least during inter-course periods and on the lunch time.
Windows and/or doors are closed 15-20 minutes after the end of class.