Except they can’t control the fact that wealthier kids will have access to devices that give them Wikipedia and ChatGPT and other online knowledge sources. Being able to tell ChatGPT “explain to me the Byzantine empires history” then interrogate it on fine points to prep to write an essay in immeasurably more powerful than “here’s a middle school textbook good luck understanding the nuances.” This puts the kids without a device at a structural disadvantage, a more steep disadvantage than they’re already at in society.
Finally, there’s an idea of digital literacy - the ability to use these tools to your advantage, and to navigate with sophistication the mental crack of algorithmic personalization. They will have a device at some point, and being taught at a younger age to be skeptical of mental crack might help weaken its hold (still to be seen!)
Wealthier kids have always had and always will have advantages like that. Wealthier kids probably also have their own room and a quiet organized place to do homework. They've probably been encouraged to read and been provided with books and other enrichment opportunities. I think most teachers know who these kids are and and know if they are turning in their own work or not.
I’m not talking about ChatGPT writing an essay for you. ChatGPT is also a pretty good teacher in itself, and can help you learn many topics and subjects by providing direct access to a tutor on most topics. Wikipedia is the only encyclopedia available, more or less.
While schools can’t give you a good family or a nice house to study in, they certainly can give you an iPad.
I can't speak for your area of the world, but every even vaguely metro or suburban area of Australia has public libraries with quiet spaces to work/study, free internet and free computers to use if you don't BYO. Most run digital literacy classes, and a number are even starting to do little cost-price cafe setups.
Whilst being wealthy is an advantage, it's certainly not the gap it once was.
There is zero need to be using "devices" in schools at least until High School, and I'd question even then.