SOUTH BURLINGTON, Vt. (AP) — A Vermont teachers union says its members have voted to strike as two-year contract negotiations stall.

The South Burlington Educations' Association voted Friday to go on strike Wednesday unless they can reach a two-year contract agreement with the South Burlington School Board.

The two sides mediated for hours Thursday night.

Southern Burlington teacher and union spokesman Noah Everitt blamed the school board for leaving the bargaining table and trying to impose terms of employment on the city's teachers.

South Burlington School Board Chair Elizabeth Fitzgerald said board members are disappointed about the possible strike amid budget pressures. Fitzgerald said the union should avoid disrupting the school year and reconsider the board's concessions on salary and health care contributions.

South Burlington teachers went on strike for four days in October 2014.