It depends on how widespread Covid-19 infections are in the community and the safety measures the school takes. In areas where the virus is poorly controlled, public health experts say in-person education would be too risky.

Given the many lingering unknowns about the virus, school districts are approaching the school year in a variety of ways.

Evidence suggests young children don’t spread the disease very easily, while kids aged 10 and up may transmit as easily as adults. But experts say more conclusive proof is needed.