DURHAM – Voters here will go to the polls Tuesday to decide whether to form a school system with Freeport and Pownal.

The merger between the Durham School Department and SAD 62 would be effective July 1, 2009. The plan, among other things, establishes a cost sharing method that calls for additional local money, currently 15 percent of the combined budgets, to be shared at the same ratios those costs were incurred in the 2007-08 budgets.

Each town’s allocation, based on this formula is as follows: Durham, 21.42 percent or $654,499; Freeport, 65.98 percent or $2,016,149; Pownal, $12.6 percent or $385,031.

Freeport and Pownal will also be voting on the proposal on Tuesday. If approved by all three towns, Durham will cease to be a part of School Union 30, Lisbon-Durham on June 30, 2009.

Selectmen’s Chairman Wesley Bennett, School Committee Chairman Laurie Poissonnier and Budget Committee Chairman Allan Purinton represent Durham on the Regional Planning Committee.