And Mr. Chuang points out that the show is organized like a novel, in which each section is a chapter and each picture equivalent to a paragraph.

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In January the 14-16 section of the diploma was downgraded from the equivalent of five GCSEs to being worth just one GCSE, despite having been developed by academics and industrialists to provide a robust alternative to traditional academic qualifications.

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Mr Hall said a piece he picked up - a quarter of the section - weighed about 15 lbs (6.8 kg), the equivalent of about three bricks.

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