I am a student living in Virgina and earned income in Virgina, but my primary residency is Pennsylvania. Am I considered a resident or nonresident of Virgina for taxes?

[MaryK4]

If you lived in Virginia more than 183 days, you would be a Virginia resident for taxes (statutory). 

Students are subject to the same rules for residency and filing requirements as all other filers. For example, if you lived in Virginia for more than 183 days during the taxable year, you are classified as an actual resident, and must file Form 760 even if you maintained your legal residency in another state.