Air filters in classrooms reduce sick days by more than 10 per cent.
29 April 2025
Putting air filters in classrooms seems to boost student attendance, which may be due to them reducing levels of air pollution, pollen, pathogens or all three.
School attendance increased by 1.3 days per pupil per year when five elementary schools in Milan introduced air filters into classrooms, in the first randomised controlled trial of its kind.
School attendance increased by 1.3 days per pupil per year when five elementary schools in Milan introduced air filters into classrooms, in the first randomised controlled trial of its kind.