Do I need to let a parent.know every time I have a student who wants to go by something other than the name on their school forms? Because that can be a real Hassel. There is a student in my school where the parents changed the kids name after adoption, but the girl prefers her original name.

It isn't hurting anyone calling this kid by their preferred name. Kids are allowed to have their own identity separate from whT their parents want and as long as it isn't hurting anyone who cares.