Parents or legal guardians will need to provide the following documents: Proof of Residency in Fairfax County. Write a letter to a state agency, like the DMV, or voter registration, that will require an answer from them.O Permanent resident card or passport. ☐ Proof of 9-Month residency in Fairfax County, the City of Fairfax, or the City of Falls Church and current address. Proof of Virginia Residency. You must present at least one document from the primary list of residency documents. Are you looking for answers on how to become a VA resident? Here's an informative guide to the Virginia residency requirements that you need to know. Other Required documents if not uploaded (e.g. , Proof of residency, Health, Medical forms, last elementary report card or secondary transcripts).