From the Document: "As some communities in the United States open K-12 schools, CDC [Centers for Disease Control and Prevention] offers considerations for ways in which schools can help protect students and staff and slow the spread of SARS-CoV-2 [severe acute respiratory syndrome coronavirus 2], the virus that causes coronavirus disease 2019 (COVID-19). Testing to diagnose COVID-19 is one component of a comprehensive strategy and should be used in conjunction with promoting behaviors that reduce spread, maintaining healthy environments, maintaining healthy operations, and preparing for when someone gets sick. Schools should determine, in collaboration with state, tribal, territorial, and local health officials, and, in the case of K-12 schools operated by the federal government (e.g., K-12 schools for Department of Defense [DoD Dependents]) appropriate federal health officials, whether to implement any testing strategy, and if so, how to best do so. These CDC considerations are meant to supplement--not replace--any federal, state, local, territorial, or tribal health and safety laws, rules, and regulations with which schools must comply. Implementation should be guided by what is feasible, practical, and acceptable and be tailored to the needs of each community."
Centers for Disease Control and Prevention: https://www.cdc.gov/