Beverly and Gloucester teachers’ unions were ordered to pay $50,000 fine Wednesday as contentious negotiations continue and their strike heads into its fourth school day Thursday. An Essex Superior Court judge ruled Wednesday that the union must pay $50,

While the three strikes are separate, some of the sticking points have been the same — as they have in a recent wave of other teacher strikes across the state.

For the third straight day, classes for all three North Shore district students will be canceled as the teachers union and city officials failed to reach a contract agreement. District officials in all three towns sent an email home to parents around 6 p.