‘Sec. 32. Exemption for certain towns. Notwithstanding any provision of the Maine Revised Statutes, Title 20-A to the contrary, the towns of Castine, Penobscot, Blue Hill, Brooksville, Brooklin, Sedgwick, Surry, Deer Isle and Stonington are authorized to form a school union governed by the provisions of Title 20-A in effect prior to the enactment of Public Law 2007, chapter 240, Part XXXX. The Department of Education, in consultation with the municipal officers of those towns, shall submit legislation necessary to fully implement the provisions of this section to the First Regular Session of the 124th Legislature.’