NY Times, July 29, 2020: https://www.nytimes.com/interactive/2020/07/29/us/schools-reopening-coronavirus.html
"The more people a student or staff member interacts with, and the longer that interaction, the higher the risk of COVID-19 spread. The risk of COVID-19 spread increases in school settings as follows:
COVID-19 is mostly spread by respiratory droplets released when people talk, cough, or sneeze. It is thought that the virus may spread to hands from a contaminated surface and then to the nose or mouth, causing infection. Therefore, personal prevention practices (such as handwashing, staying home when sick) and environmental cleaning and disinfection are important principles that are covered in this document. Fortunately, there are a number of actions school administrators can take to help lower the risk of COVID-19 exposure and spread during school sessions and activities."
CDC on Cleaning
CDC guidelines to cleaning facilities: https://www.cdc.gov/coronavirus/2019-ncov/community/disinfecting-building-facility.html.
List of cleaners suggested by the CDC: https://www.epa.gov/pesticide-registration/list-n-disinfectants-use-against-sars-cov-2-covid-19
Dr. Gupta demonstrates how schools could reopen with safety-conscious practices: