Three teenagers were taken to hospital after smoking a cannabis vape in school - said to have been brought in by a pupil in a bid to calm themselves ahead of an exam.
Other pupils at Unity College in Burnley, Lancashire, were treated on site after experiencing a severe reaction.
The device was laced with THC oil, the psychoactive chemical in cannabis, and was allegedly taken to school by a pupil who hoped it would ease nerves ahead of a GCSE test.
