The age of majority in North Carolina is indeed
18, as per North Carolina General Statutes Chapter 7B (Juvenile Code) Article 1 (Definitions) §7B-101(14):
Chapter 7B - Article 1
However, eligible applicants over the age of
16 may petition a court for a decree of emancipation, as per North Carolina General Statutes Chapter 7B (Juvenile Code) Article 35 (Emancipation). Note, though, in particular, that (§7B-5303): "
The petitioner has the burden of showing by a preponderance of the evidence that emancipation is in the petitioner's best interests. Upon finding that reasonable cause exists, the court may order the juvenile to be examined by a psychiatrist, a licensed clinical psychologist, a physician, or any other expert to evaluate the juvenile's mental or physical condition. The court may continue the hearing and order investigation by a juvenile court counselor or by the county department of social services to substantiate allegations of the petitioner or respondents."
Chapter 7B - Article 35
In other words, a decree of emancipation would be very much the exception to the rule, and would be agreed to only in special, proven sets of circumstances.