The scope of the hearing shall extend to all grounds the petitioner has stated in the petitioner's petition, except those grounds that the court finds should be excluded because they have been waived or previously determined, as defined in § 37-1-312.
Scope of hearing
Tenn. Code Ann. § 37-1-311, under Juvenile Post-Commitment Procedures Act.
Tenn. Code Ann. § 37-1-311