MONTCLAIRMontclair High School lockdownKevin R. WexlerNorthJerseyPeople are shown at Montclair High School, just after the lockdown was lifted. Wednesday, November 27, 2019Kevin R. Wexler/NorthJersey.comPeople are shown at Montclair High School, just after the lockdown was lifted. Wednesday, November 27, 2019Kevin R. Wexler/NorthJersey.comMontclair High School will not be back in session this academic year.Kevin R. Wexler/NorthJersey.comPeople are shown at Montclair High School, just after the lockdown was lifted. Wednesday, November 27, 2019Kevin R. Wexler/NorthJersey.comPeople are shown at Montclair High School, just after the lockdown was lifted. Wednesday, November 27, 2019Kevin R. Wexler/NorthJersey.comMontclair High School was locked down part of, Wednesday, November 27, 2019.Kevin R. Wexler/NorthJersey.comPeople are shown at Montclair High School, just after the lockdown was lifted. Wednesday, November 27, 2019Kevin R. Wexler/NorthJersey.comA person is shown walking in front of a police car at Montclair High School, after a lockdown, Wednesday, November 27, 2019.Kevin R. Wexler/NorthJersey.comStudents and parents reuniting after the lockdown was lifted at Montclair High School on Wednesday, Nov. 27 ,2019.John Connolly/NorthJersey.comStudents exiting the Montclair High School freshman building on Wednesday, Nov. 27, 2019.John Connolly/NorthJersey.com