Thomaston will lose voting power on the board while Cushing will realize the greatest gains if the Regional School Unit 13 Board reapportions to reflect updated population figures.

The board voted June 2 to create a committee to study reapportionment and to ask the Maine commissioner of education to approve the reapportionment.

Board member Josiah Wilson of St. George has repeatedly requested a change in the power on the board, pointing out that Thomaston was overrepresented because it was being given credit for prisoners who no longer were located in that town.

The 2010 Census results were released in April. Thomaston experienced the greatest loss of population since the 2000 Census.

The reapportionment committee will consist of a school board member, member of the select board or city council, and a citizen member from each of the six communities of RSU 13.

The committee could change the number of members from a community or change their weighted votes. Thomaston has three board members on the 13-member board, second only to Rockland’s five members. St. George has two members and Cushing, Owls Head and South Thomaston each have one.

RSU 13 Board Chairwoman Jamie Doubleday said the process could take months to complete. Wilson said he thought it would be a simple process that would not take a lot of time.