For me, I would base it all on hospital availability. Once ICU's are 80% full you start asking people to restrict their movements voluntarily. Please don't go to crowded bars for a few days sort of statements. At 90% I'd start making some more mandatory changes (bars and restaurants observe capacity limits). At 100% we would get more draconinan.
Chicago proper is Region 11 below, they are around 89% CPU usage. Region 10 are the western burbs and are over 90%. Region 7, just south of Chicago, is at 98%. That is perilously close to a major problem for the people that live in that region. Once 100% is exceeded, every car accident, every survivable heart attack or stroke becomes much more dangerous. Frankly people should be more careful at that point not only hanging around large crowds but in driving, or running across busy streets, or whatever else we do that we take for granted excellent emergency care.
In theory, school shouldn't be a big problem. Teachers should be vaccinated (but if anyone required them to be the same people demanding school every day would be angry we made them be vaccinated). Kids are less likely to be hospitalized. But in a region like 7 with only 3 ICU beds available, one more becomes a bigger deal than normal.
But I don't think I would go virtual. I would tell teachers they will teach the 180 days in person (assuming that is Illinois' number), if that means they are teaching come July 20, they are teaching come July 20. I was skeptical remote learning was as bad as it turned out to be, but the numbers seem obvious, it didn't work. If teachers feel it is too dangerous to be in classroom today, fine. But they will be back in the classroom for the full number of days. So they will have to account for that in deciding when it is safe to return.
The data reported are based on daily counts that hospitals report to IDPH through EMResource. They should be considered provisional and may be subject to change as a result of IDPH’s continuous data validation and hospital follow-up efforts. These numbers are reported by Illinois acute care...
dph.illinois.gov