How can i find acting camps in california that are trustworthy and are some of the best?

hi i am a 15 yr old girl who loves to ac t and i take acting classses and have a agent in salt lake ciyt utah i would love to go to acting school in california but since i dont have any place in california to live or any family members so wuld have to have a dorm and would that be costing me alot of money? do u guys no what kinda camps actrs went to like zac efon vanessa hudgens ashlyey tidstele selena gomez those people? if u guys can answer that would be great and agin thnx so much