A headmaster featured on TV's Educating Greater Manchester has been banned from teaching indefinitely after a tribunal heard the school was like a 'zoo' with 'dangerous' behaviour worsened by his refusal to exclude pupils. Andrew 'Drew' Povey, 47, former executive head of Harrop Fold School, Worsley, was accused of 'off-rolling' three pupils before the January 2018 census to boost performance …