Classes in three different North Shore communities remain in jeopardy for Tuesday if no contract agreement is reached before the end of the holiday weekend.

The strikes in Gloucester, Beverly, and Marblehead are separate, but the issues are similar: pay, benefits, and parental leave. In Marblehead, teachers are also seeking greater efforts to improve teacher safety,

Teachers in two different communities are on strike amid impasses in contract negotiations, resulting in the closure of schools on Friday.