NEW YORK — New Jersey Gov. Phil Murphy will lift the state mask mandate for schools on March 7, but local districts will still have the authority to keep their own in place. Murphy is expected to formally announce the news Monday afternoon, the governor’s communications director confirmed to the Daily News Monday. New Jersey has maintained some of the strictest COVID-19 protocols in the country and was one of just 11 states in the country to mandate masks for students. Only about in four New Jersey children are fully vaccinated and one in three have received at least one shot as of Feb. 1, acc…