If my state of residency is AL, and I go to school in AL, but I lived in NC for the summer and worked, how do I claim my NC taxes without changing my state of residency?

[DawnC]

You should file a non-resident return for NC.   If you went to NC to work during the summer and then you returned back home to AL - your trip would be considered temporary.   You were not a resident of NC so you don't have to do part-year returns.   Short term stays that you intend to return home from are not permanent moves.  The temporary residency can be for school, work, medical reasons, incarceration, etc....

Do I have to file tax returns in more than one state?

Why would I have to file a nonresident state return?

How do I file a nonresident state return? - - Follow these instructions - do not indicate that you moved and check the box that says I have Other State Income.