Academy status is "a state of mind more than anything else".
That is the view of the former Schools Commissioner, Sir Bruce Liddington, who heads EACT, which sponsors eight academies with more in the pipeline.
He was trying to answer my question: "what exactly makes an academy different?"
As we could be about to see academies in England leap from just over 200 now to well over 2,000 in a few years, it is a key issue.
Professor Chris Husbands of the Institute of Education says that it could be "the most significant change in the school system for 45 years".
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