22 Pa. Code § 507.7 – Change of domicile.

(a) A student who changes his domicile from Pennsylvania to another state shall promptly give notice to the university.
(b) A university may reclassify a student in the event it believes he is no longer a Pennsylvania domiciliary. The student may challenge the determination under the procedures provided in this chapter.

This section cited in 22 Pa. Code § 507.6 (relating to effective dates for reclassification).