The updated guidelines make key changes to earlier language and include a new color-coded chart that divides school reopening options into four zones based on the level of community transmission.
Reopening schools is a challenge because states have different rules. NPR's Sacha Pfeiffer talks to Barbara Jenkins, superintendent of public schools in Orange County, Fla., about in-person learning.
After delaying the start of an in-person semester, many colleges are now seeing spikes of COVID-19 rates as students return to campus for the spring semester.
"I was livid," says Maxie Hollingsworth, a teacher in Houston. "Everyone is saying that schools must reopen, but teachers are not a priority for vaccines. That is insane."
Chicago students will start returning to school for in-person classes, after the city and the teachers' union reached an agreement on how to reopen schools safely during the pandemic.