It is hereby expressly declared to be the purpose of this section to provide for an increase in the annual scientific educational requirements of licensed Colorado chiropractors. Each licensed Colorado chiropractor in active practice within the state of Colorado shall be required annually to attend not less than fifteen hours of scientific clinics, forums, or chiropractic educational study consisting of subjects basic to the field of the healing arts as set forth in section 12-33-111. Each year at the time of its regular June meeting the board shall prepare an educational schedule of minimum postgraduate requirements of subjects as set forth in section 12-33-111 that shall be met by any school, clinic, forum, or convention giving such educational work, and such minimum standards must be complied with by such school, clinic, forum, or convention before the board issues a postgraduate attendance certificate. Credit hours shall be determined by the board. Applicants shall apply to the board prior to or after the course and present proof of attendance and synopsis of the course content for approval of credit hours. This provision is made mandatory in the best interest of public health and welfare and to provide progress in the field of chiropractic. If any licensed chiropractor is unable to comply with this section on account of dire emergency and for good cause shown, the board may waive the provisions of this section.