2024 Yes https://doi.org/10.1111/josh.13483 Viera, Luka Review Students Staff Teachers Kindergarten Elementary (K-5) Middle/Jr High (6-8) High School (9-12) Viruses COVID rates COVID-19 Mask mandate School children Researchers reviewed 14 studies on school mask use and COVID-19 in five countries. Ten found reduced incidence, while others showed no or negative effects. Findings highlight methodological gaps and the need for stronger study designs.