2021 Yes https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/34682446/ Pule, Vicky Africa Observational Students Elementary (K-5) Temperature Humidity Absenteeism Climate change Cold Environmental health Heat Public health Humidity Schoolchildren we found absenteeism was highest at low indoor classroom Tapp (i.e., below 15 °C). Absenteeism decreased as indoor Tapp increased to about 25 °C before showing another increase in absenteeism. Analyses of indoor classroom temperature and absenteeism in relation to classroom characteristics showed few statistically significant relations—although not exceptionally strong ones—likely because of the multiple factors that influence absenteeism.