CORAOPOLIS Classes have been canceled at a second Pittsburgh-area school district as teachers and administrators are locked in a contract dispute.

Classes are off Monday at Moon Area School District. Teachers there are on strike but not picketing after weekend negotiations failed to yield a new contract.

A teacher strike in the Bethel Park School District is entering its third week. Administrators are teaching classes Monday for members of the senior class so they can make their planned June 4 graduation date.