Minnesota is leaving decisions to districts, but gave out guidance on when and how to proceed. Basically, a 14-day countywide rolling average of confirmed new cases determines how much students are in the building. Anywhere from everyone is in, to various hybrids of distance and in-person, to everyone's distant. Masks/face coverings anytime in the building.
Details are sufficiently gritty that it was hard to fully explain in yesterday's presser, but it seems like a decent attempt to thread the needle between the need for kids to be in school and the fact that kids catch and spread the virus just as much as adults do.