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.

Marblehead parents filed a lawsuit protesting the suspension of extracurriculars during an ongoing teachers strike, as picket lines set up outside schools in three North Shore towns and tensions escalated Tuesday.

MARBLEHEAD - Striking teachers in Beverly, Gloucester and Marblehead, and school committees have not yet reached an agreement, and all three communities have closed school for Wednesday. Nearly 10,000 students in the three districts are waiting with their ...