State v. John Doe (2012-10), 322 P.3d 976

Twin Falls County Prosecutor filed a juvenile petition (May 13, 2011) charging Doe with lewd conduct based on acts committed when Doe was a minor; Doe was 22 when the petition was filed and served.
At an initial hearing the State announced it would move to waive juvenile jurisdiction and transfer the case to adult court; the State filed a written waiver motion on July 21, 2011.
Doe moved to dismiss, arguing the juvenile court lost jurisdiction when he turned 21 under the Juvenile Corrections Act (JCA).
The magistrate (juvenile) court granted Doe’s motion to dismiss, concluding I.C. § 20-507 terminated JCA jurisdiction at age 21 and that the court lacked authority to decide the State’s waiver motion.
The district court, on intermediate appeal, affirmed the magistrate court; the State appealed to the Idaho Supreme Court, which reversed.

Issue	Plaintiff's Argument (State)	Defendant's Argument (Doe)	Held
Whether the juvenile court could decide a prosecutor’s I.C. § 20-508(2) waiver motion after JCA jurisdiction terminated under I.C. § 20-507 when the respondent was over 21 at filing	I.C. § 20-507’s final clause saves the court’s ability to “proceed as provided in § 20-508(2)” — so the court retains limited authority to rule on waiver even after jurisdiction terminates	Once the juvenile turns 21, § 20-507 terminates the court’s jurisdiction and the juvenile court cannot proceed; the court therefore lacked authority to rule on the waiver motion	The Supreme Court reversed: although § 20-507 terminates general JCA jurisdiction at age 21, its saving clause permits juvenile courts limited jurisdiction to entertain waiver motions under § 20-508(2) even after termination

State v. Doe, 147 Idaho 326 (2009) (interpreting § 20-507 termination at age 21)
Bailey v. Bailey, 153 Idaho 526 (2012) (standard of review for district court acting in appellate capacity)
Losser v. Bradstreet, 145 Idaho 670 (2008) (procedural precedent on appellate review of magistrate decisions)
Verska v. Saint Alphonsus Reg'l Med. Ctr., 151 Idaho 889 (2012) (statutory interpretation principles; plain meaning controls)
St. Luke's Reg'l Med. Ctr., Ltd. v. Bd. of Comm'rs of Ada Cnty., 146 Idaho 753 (2009) (freely review statutory interpretation)