So i changed my residency from California to Itah for school. And what date should I put in when it askes me when I became a Utah resident? According to my school i had to live an year in Utah to be e

[ulemjm]

Elligable for residency tuition. Should I put a date when I physically moved to Utah?

[KatrinaB48]

If you are not yet considered a resident of Utah, then you should file a nonresident return for that state. To do so, you will need to delete both state returns and file your Utah return first. Please view the nonresident state filing FAQ for directions on completing this type of return. You can view the directions to delete your state return as well.

[Hal_Al]

Simple answer: Yes, you became a Utah resident on the  date you physically moved to Utah.

Students are not usually considered to have change residency, just for going off to school.  But since you have worked it out with the school that  you will be a Utah resident for tuition (you have intent to become a permanent Utah resident), then you are considered a Utah resident for tax purposes.  You should follow thru with voter  car and drivers licenses. 

You will file as part year residents of both CA & UT