They need to stop paying teachers if they are not teaching in the classroom. Period.
You would be amazed how many of them will show up to work within a week.
Let’s try an experiment, or do understand 100% of what is said through a mask and face shield with perfect clarity and does your listener understood 100% what you are saying?
You try doing a job like teaching wearing a face mask, face shield and gloves. Let’s see the percentage of content you can teach effectively and be understood wearing that garbage.
I will never return to the classroom wearing that garbage. Period.