How to get accepted into the school you want?

Im going into middleschool and i really want to go to This school named Castro Middle school,It's in Az.My mom already signed me up and we got a call back but they said they will let me know til The end of June.All my other friends got accepted.But im out of the district but i signed up for open enrollment.If i dont get accepted,how do i handle it.This means i will never get to see my friends again and trust me.I will have a hard time