N.C. Gen. Stat. § 90-225.2

Programs required for dental hygienists licensed in this State to qualify to administer local anesthetics pursuant to G.S. 90-221(a) shall be taught using lecture and laboratory or clinical formats at the University of North Carolina Adams School of Dentistry, the East Carolina University School of Dental Medicine, or a dental hygiene program accredited by the Commission on Dental Accreditation (CODA), or a similar organization approved by the United States Department of Education. The training program will include, at a minimum, a 30-hour session composed of 16 didactic hours and 14 clinical hours. Clinical instruction shall be provided by a dentist holding a DDS or DMD degree, and the faculty-to-student ratio shall be no greater than 1:5 for the laboratory and clinical instruction. Courses must be taught to a minimum score of eighty percent (80%) in the parenteral administration of local anesthesia, and successful students shall be awarded a certificate of completion.