(B) "Barber school" means a school approved by the board to teach the practice of barbering as required by Chapter 4709-3 of the Administrative Code.
(C) "Approved" or "approval" means approved by or approval of the board as evidenced by formal action of the board by a written instrument signed by the executive director.
(D) "Theoretical scientific study" means the classroom study under the supervision of a teacher of theoretical subjects of instruction in the art of barbering which shall include: scientific fundamentals for barbering, hygiene, bacteriology; histology of the hair; elementary chemistry relating to sanitation and antiseptic; diseases of the skin, hair and glands, massaging of the muscles; cutting, shaving, arranging, dressing, coloring, bleaching and tinting of the hair; permanent waving and chemical hair straightening; salesmanship; shop management; and such other subjects as prescribed by the board.
(E) "Scientific barbering practice" means practicing under the supervision of a teacher.
(F) "General barbering practice" means clinic barbering practice under the supervision of a teacher.
(G) "Teacher" means one who has been issued a license by the board to practice as a teacher of barbering.