The commission shall adopt rules providing for continuing education courses in selling, leasing or managing residential, commercial and industrial property as well as courses in basic real estate law and practice and other courses prescribed by the commission. The regulations shall require that every licensee except licensees who were already exempted from continuing education requirements prior to July 1, 2011, as a condition of license renewal, successfully complete a minimum of thirty classroom hours of instruction every three years in courses approved by the commission. The rules may prescribe areas of specialty or expertise and may require that part of the classroom instruction be devoted to courses in the area of a licensee’s specialty or expertise.