I think it's too early to say what the right course of action is. I'm betting they'll continue to need to wear them until we know more for certain about the potency and long-term effects of omicron.
The reason I think they may continue to require them in schools is that it has been effective against other variants, and that means they may be effective against future variants as well.
I'm very much all for eliminating masking requirements when/how the CDC advises though!