Updated 39 mins ago NBC Universal, Inc. All high schools in Massachusetts are required to reopen for full-time, in-person learning Monday, though some have received state-approved delays. Download our mobile app for iOS or Android to get alerts for local breaking news and weather. Some school districts have successfully applied for waivers, while others brought students back sooner. Massachusetts education officials did not respond to requests for the number of high schools that received waivers for Monday's deadline. Elementary and middle school students returned to in-person learning in April. In Andover, about 1,500 students return Monday to a building that’s struggled with overcrowding, making it hard to maintain social distance.