Interim Considerations for Testing for K-12 School Administrators and Public Health Officials | CDC
These interim considerations are based on what is currently known about COVID-19 as of the date of posting, October 11, 2020. These considerations are for testing in school settings and are intended for K-12 school administrators working in collaboration with their state, tribal, local, and territorial (STLT) public health officials.
https://www.cdc.gov/coronavirus/2019-ncov/community/schools-childcare/k-12-testing.html