Older schools are likely to have poor indoor air quality due to older construction materials, how they were built and high levels of carbon dioxide due to students breathing same air for extended periods of time in rooms with limited air circulation. Poor air quality has been linked to decreased concentration levels in students, lower academic performance and higher absenteeism from allergies and asthma. Research has also shown that COVID-19 is spread through airborne transmission.

Older schools are likely to have poor indoor air quality due to older construction materials, how they were built and high levels of carbon dioxide due to students breathing same air for extended periods of time in rooms with limited air circulation. Poor air quality has been linked to decreased concentration levels in students, lower academic performance and higher absenteeism from allergies and asthma. Research has also shown that COVID-19 is spread through airborne transmission.