Emily Oster, co-author of the website COVID Explained, joined Boston Public Radio on Thursday to walk through school districts' mad scramble to figure out how to reopen safely this fall.

Oster highlighted a mantra of "be flexible," noting that districts need to prepare for COVID cases in schools and be able to respond effectively to that reality.

Emily Oster is an economics professor at Brown University, writer of books on pregnancy and parenting, and co-author of the website COVID Explained.