If I had kids in public schools (which I don't, mine all are and will be homeschooled) I'd tell them to never wear a mask.
Being punished for standing for what's right is always worth it.
I never wear a mask anymore.
There was a period from March to June when the virus first hit when I gave it a shot until more info came out.
Not so any longer.
There's a couple of big chain businesses that have a cute little sign about masks on their doors, but myself and most others totally ignore them!
I also ignore the little yapping members of the Borg who occasionally chase you while yapping something about a mask.
Reducing disease spread requires two things: limiting contacts of infected individuals via physical distancing and other measures and reducing the transmission probability per contact. The preponderance of evidence indicates that mask wearing reduces transmissibility per contact by reducing transmission of infected respiratory particles in both laboratory and clinical contexts. Public mask wearing is most effective at reducing spread of the virus when compliance is high.
I would agree that cloth masks are next to worthless.
We wear medical grade masks in our lab and also require our patients to do the same.