Under the adult judge model, an adult volunteer serves as the judge while youth volunteers serve as prosecuting and defense attorneys, jurors, clerks, and bailiffs. Under the youth judge model, youth volunteers fill all roles, including judge. Under a peer jury model, youth jurors question the respondents and make sentencing determinations. Under a youth tribunal model, youth serve as prosecuting and defense attorneys, and present their cases to a panel of youth judges, who then make a sentencing determination. To date, there are no comprehensive national guidelines for youth courts, but rather, courts operate under and are tailored to their local jurisdictions. To date, there are more than 675 youth courts in the United States.