2024 Yes The ventilation problem in schools: literature review https://onlinelibrary.wiley.com/doi/10.1111/ina.12403 Fisk, W.J. Multiple Countries Review Students Elementary (K-5) Middle/Jr High (6-8) High School (9-12) Ventilation rates Carbon Dioxide (CO2) Carbon dioxide (CO2) Costs Health Performance School Ventilation Literature review shows classroom ventilation rates often fall below standards. Increased ventilation is linked to better student performance, lower illness, and reduced absenteeism. Costs are minimal relative to public education spending. 2017