You might have a legal claim under the theory of promissory estoppel, which is recognized by Arizona courts.  This is a theory under which an individual can recover when s/he relies on a promise of another (to help pay for your schooling in the other state) in making a decision to act (move away), the promise is broken (no help with schooling) and the promisee suffers a related detriment (lost scholarship money).  If your scholarship was $10,000 or less, you can sue him in Justice Court.  Problem may be figuring out which one.  Bigger problem may be deciding which state.  Promise was made in Arizona and broken in the other state, which is where he is living.  If you have to go to the other state to sue him, it might not be worth it.