I don’t know how he would be able to get someone else’s credentials. Possible though.He wouldn’t have access to the grades, he either had to have gotten someone to do it for him (unlikely at this point) or gotten someone else’s credentials to be able to go in and change them. I’m guessing that’s what happened honestly. That would explain why grades were still being changed after the laptop was taken and this is probably why the charges are as severe as they are. Not a good look to somehow get teacher or admin credentials and then change things when you’re barely an aide in the school as is (and probably not well liked by admin either)