James Monroe Elementary and its approximately 500 students will relocate four miles away, to Middlesex County College.
CLICK HERE to see images of the fire.
Police say a custodian tossed an unfinished cigarette into a trash can in the janitor's office Saturday evening, sparking the blaze that gutted the 50-year-old school.
Jerome Higgins, 48, has been issued a summons accusing him of smoking in a public building, which is a disorderly persons offense. He's been placed on administrative leave.
There were no sprinklers in the building, because they were not required when the school was constructed back in the 1960s.
Dozens of firefighters battled the blaze for about three hours before it was brought under control. About a dozen firefighters were treated for smoke inhalation, but no residents were injured.
