2022 Yes https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8789458/ McNeill, V Faye North America Experimental Modeling Elementary (K-5) Middle/Jr High (6-8) High School (9-12) Ventilation HVAC Indoor air School Sensors We have presented a number of practical approaches for gathering room-level ventilation data for educational spaces, and anecdotal examples of their application in a range of building and room types, and climates across the U.S. In particular, approaches using reliable low-cost air quality sensors show promise for use by nonspecialists. Room-level ventilation data allows consideration of indoor air quality and transmission of respiratory disease in decision making with regards to occupancy and ventilation strategies. As we have demonstrated, it can also be critical in identifying areas for mitigation (i.e. with filtration devices) and providing clues into building occupancy patterns which must be accounted for in the ventilation strategy.