If they rent and move their residence, it still counts.
My folks did that (although it wasn't very far) my senior year so I could go to a different school. That was in 1989.
Yes I get that counts but I am not a big fan of that loophole in this situation. Kind of reminds of 2 episode in the Friday Night Lights TV series, one was the "mailbox" where boosters setup a mailbox outside of town they used to make it seem like a kid was eligible to play in their district and the other was a high profile player displaced by hurricane Katrina that the area schools were essentially recruiting for him to play for their school. I get this is a pandemic situation but I don't like how the rules could possibly get manipulated here that we could see an influx of out of state kids enrolling just so they can play FB. These kids aren't "moving" here for educational reasons which is a different scenario. I'm also curious what the protocols will be if out of state students want to open enroll into public schools how that is going to be handled.