Teachers in Gloucester, Beverly, and Marblehead returned to the picket line Friday and classes were canceled again.

Teachers on the North Shore of Massachusetts are back on the picket line, and students are out of school for another day. Friday officially marks one week of striking in two school districts, and there’s no deal in sight.

All three North Shore school districts that closed Tuesday due to teachers unions strikes remained closed Wednesday as school administrators and unions struggled to reach agreements for new educator contracts. Schools in all three districts had Monday off ...