Voters in Windham and Raymond on Tuesday approved the biggest school budget increase in the history of the two-town district, which consolidated in 2009.

The 2014-2015 budget passed in both towns, 1,067-573.

The $41.1 million spending plan is $1.4 million, or 3.5 percent, higher than it is this year.

A 5 percent increase in health insurance costs accounted for $450,000 in additional spending. Students going to charter schools and an increase in students going to vocational schools added $131,000 and $112,000, respectively.

The annual tax bill on a $250,000 home will increase by $34.32 in Windham and $87.39 in Raymond.

The district, also known as Regional School Unit 14, has about 3,300 students in seven schools.