RSA 169-B:4 Jurisdiction Over Certain Persons.

I. The court shall have jurisdiction over any minor with respect to whom a petition is filed under this chapter after the minor's eighteenth and before the minor's nineteenth birthday for an alleged delinquency offense committed before the minor's eighteenth birthday.
II. The court may retain jurisdiction over any minor during the period after the minor's eighteenth birthday as justice may require for any minor who, prior to the minor's eighteenth birthday, was adjudicated delinquent and:
(a) For whom the department has recommended extension of the court's jurisdiction;
(b) Who has, prior to the minor's eighteenth birthday, consented to the court's retention of jurisdiction; and
(c) Who is attending school for the purpose of obtaining a high school diploma or