STRAIGHT FROM THE CDC GUIDANCE PAGE
Science Brief: Transmission of SARS-CoV-2 in K-12 Schools and Early Care and Education Programs – Updated
Updated July 9, 2021
highlighted are the CDC's statements that tell us not to wear masks
https://docs.google.com/document/d/1mekgvdZQ4q8uTT6VCrf30L60SDpYer-c-9b-dydJcuM/edit?usp=sharing