<p>If she had attended school in AZ immediately after graduating h.s, once she started as in-state, they probably would have allowed to remain in-state for tuition purposes even after her parents moved.</p>
<p>Once her family has lived in CA for a year, she will probably be able to get in-state residency. If they moved there due to job relocation, she could probably petition for in-state.</p>
<p>If she needs financial aid and is under the age of 24, she is a resident where her parents live and will be oos anywhere else. She will probably never be a montana resident for tuition purposes as long as she is considered a dependent for financial aid purposes.</p>