This is the bizarre moment school teachers train for an active shooter - hurling plastic balls and pinning them down with a table.

Staff took part in the training exercise with local police in Buriram province, northeast Thailand on December 20.

The workshop came after drug-addled shooter Panya Khamrab, 34, killed 36 people and injured 10 others during a rampage through a nursery in Nong Bua Lamphu province on October 6.

Khamrab, who was dismissed over his methamphetamine addiction, fired a handgun and shotgun in the nursery and stabbed children inside with a machete before continuing the killing spree outside. He then killed his wife and child before shooting himself.

He later turned the gun on himself in the Uthai Sawan district.

The bloody incident is said to be the deadliest mass shooting by a single perpetrator in Thailand's history and regional officials have been taking it upon themselves to hold training sessions to prepare for the rare eventuality.