As educators in the United States prepare to welcome students back to class for the first time in months, schools’ ability to quickly identify and contain coronavirus outbreaks before they get out of hand will be put to the test in thousands of districts around the country.

Newly reopened schools in Mississippi, Indiana and Georgia have already reported infections just days into the academic year, triggering virus protocols that include swiftly isolating infected students, tracing their contacts and quarantining people they exposed.

“It doesn’t matter if you open schools in July, like we did, or if you open in August, September or October. All schools are going to have to deal with the issue of positive Covid-19 test results,” said Lee Childress, superintendent of Corinth School District in Mississippi, where more than 100 students are quarantined at home after being exposed to a handful of infected classmates.

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