Q&A: How to get ventilation right in classrooms

The department of education has advised opening the windows before and after class as well as during breaks but keeping them partially closed or closed while students are in them. Picture: Sam Boal/Rollingnews.ie

Ventilation has become a key tool in the fight against Covid-19 in schools and workplaces. 

Many classrooms now have carbon dioxide monitors to measure how fresh the air is, with experts advising continuous levels below 800ppm to 1,000 ppm (parts per million) are advisable.