Students at Danvers High School were sent home early on Monday afternoon because of problems with the new gas-fueled boiler system.
The school went without working heat for the day and the temperature remained between 57 and 65 degrees, said Superintendent Dr. Lisa Dana.
“It is not turning on the way it is supposed to,” Dana said.
The decision was made to send home students at the start of the final period of the day, at about 1 p.m. The announcement was made via a Connect-Ed phone message from Principal Susan Ambrozavitch to parents at about 12:40 p.m.
The school remained open on Monday afternoon and co-curricular activities and sports were going ahead as usual. The buses arrived to take students home at 1 p.m. and many parents also arrived to pick up students.
The Danvers Department of Public Works were working on the problem with the boiler company, Dana said.
“Everyone is in communication with each other,” she said.
Dana said she expects the school to open as scheduled on Tuesday.