In addition to the initial training required by section 38-521, an audiology or speech-language pathology assistant assigned to provide aural rehabilitation programs shall have additional training which shall include, but not be limited to:

(1) Information concerning the nature of hearing loss;

(2) Purposes and principles of auditory and visual training;

(3) Maintenance and use of amplification devices; and

(4) Such other subjects as the department may deem appropriate.