(a) The course of instruction may include, by appropriate rule, authorization for credit with respect to summer employment by a licensed master plumber in this state who supervises the work of the student.
(b) Each person enrolled in an approved course of instruction for training plumbers shall be entitled to apply to the Plumbing and Natural Gas Section of the Department of Health for an apprentice plumber temporary card which will enable the person to engage in apprentice plumbing work under the employment of a licensed master plumber who supervises the work of the person.
(c) Students employed by a master plumber on a temporary basis shall be limited to two (2).