No school of barbering shall be granted a certificate of registration unless it shall employ and maintain a sufficient number of competent instructors, at least one for every 20 students in attendance at any one time; shall possess apparatus and equipment sufficient for the proper and full teaching of all subjects of its curriculum; shall keep a daily record of the attendance of each student; maintain regular class and instruction hours, establish grades, and hold examinations before issuance of diplomas; and shall require a school term of training for a complete course in the practice of barbering as provided in subdivision (1) of subsection (a) of Section 45-39-40.05, together with the minimum number of hours therein prescribed; and shall include practical demonstrations and theoretical studies and study in sanitation, sterilization, other safety measures, and the use of antiseptics and electrical appliances, consistent with the practical and theoretical requirements as applicable to the practice of barbering as provided in this article. Any such school that shall enroll student instructors shall not have at any one time more than two student instructors for each licensed instructor actively engaged in such school.