Pupils at a free school that was closed down last month had been "taught nothing", a union leader has said.
Russell Hobby, general secretary of the National Association of Head Teachers (NAHT), claims that some youngsters from Discovery New School, in West Sussex, were a term behind where they should have been when the school was closed over serious concerns about standards.
In his speech to the NAHT's annual conference in Birmingham, Mr Hobby is expected to say: "Some free schools are performing highly and, to be fair, few schools could have lived up to the hype attached to them, but some people were given schools to run who should not have been allowed near them."
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