Can you imagine? What are you going to do with the kids who refuse, or don't have one or don't wear it properly?
Not worn and handled properly they could even increase the risk of transmission.
Are you going to have regulation masks or will students be allowed to be individual with them? So the people who don't have the "right" kind of mask......? Which will have nothing to do with how safe they are.
I give it less than 24 hours before there's a viral prank doing the rounds involving some sort of torment involving masks. Dirty masks being used to "tease" others etc
Plus all the stuff like not being able to hear each other, whether a mask is actually of any benefit if you wear the same one all day, how you're going to supply all these masks, even the environmental impact of doing so.
If period poverty is a recognised thing that prevents girls going to school, our most deprived students will miss out on education because they don't have masks.