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.

Educators in Gloucester, Marblehead, and Beverly are facing hefty fines if they don’t return to the classroom. A judge ordered Gloucester and Beverly teachers unions<a class="excerpt-read-more" href="

Educators in Beverly, Gloucester, and Marblehead are on strike as they demand increased wages and paid parental leave.