An individual at the Saddle Brook Middle/High School who tested positive was last in the building on Tuesday, Oct. 20, Superintendent Danielle M. Shanley said.
Officials were notified on Oct. 24. It was not clear if the individual was a student or staff member.
Close contacts were notified and instructed to quarantine. Students under quarantine would be learning remotely.
Click here to follow Daily Voice Paterson and receive free news updates.