The Commissioner of Education shall on or before the first day of May next following the completion of the decennial census of the United States, notify in writing each regional board of education and the chief executive officer of each town within a regional school district of whether or not on that date representation on the regional board of education is consistent with federal constitutional standards. If the commissioner notifies a regional board of education and the chief executive officer of the towns within a regional school district that representation on the regional board of education is not consistent with federal constitutional standards, then a regional school reapportionment committee shall be appointed and a plan of representation established as provided for in subsection (a) of section 10-46 and sections 10-63j to 10-63t, inclusive.