schools April 9, 2021 5:46 pm Number of COVID Cases Up Slightly in Mass. Schools. What It Means. As more kids return to classrooms in Massachusetts, the number of cases in school is on the rise, albeit slightly. Should we be concerned? US & World Videos 3:02 Northeastern protesters released from police custody 4:32 Anti-war protester at Northeastern speaks amid arrests: ‘We are peaceful students' 5:39 Billerica police sergeant hit and killed by excavator during construction detail 2:30 Arrests made in string of home break-ins targeting Asian-Americans 1:49 2 mail carriers targeted in Dorchester robberies