http://www.bbc.co.uk/news/education-35905064 Teachers are calling for a one-day strike as part of a campaign against plans to force every school in England to become an academy. The National Union of Teachers says there is no evidence to show academy status will improve schools more rapidly than local authority schools. The union's conference has backed a strike ballot for this summer term. The Department for Education says the union was "playing politics with our children's future". And the Education Secretary Nicky Morgan has told teachers she has no intention of backing down, warning another teachers' union, the NASUWT, that there is no "reverse gear" on the proposed reforms. Mrs Morgan was heckled and faced shouts of "rubbish" from delegates during her speech arguing that the compulsory academy policy would raise standards.