> Substitutes are hard to get right now in most school districts

> wearing masks in schools might help just enough to keep schools open and operating

I think those are great points and I often try to look at it from the perspective of my child's teacher, not to mention the regulatory nightmares the administration goes through. I am friends and family with many public school teachers. I also think that's the point of the article though. It's hard to get a sub because teachers are quitting, not because of being out sick.