Has anybody famous come out of the "Fame School of Performing Arts" that Paul McCartney helped set up in Liverpool four years ago? And what about that football academy that the FA set up with great publicity in the mid-eighties? What percentage of its graduates have become Premier League footballers? Or even professional footballers in any division?
Some cultural academies might be dubious, while others - such as the Royal Academy of Music - are obviously necessary. Nobody can become a classical musician without long and rigorous training. Lots of people who weren't writers have suddenly produced - in middle, or old age - a good book. No people have suddenly, from scratch, become professional classical performers in middle age.
There are plenty of grey areas in the subject of teaching the arts. Simon Callow has argued that certain forms of training - especially in the voice - are essential for stage performance. In his biography of Orson Welles, he argued that - with all Welles's genius - there were still limits as to what he could do on stage because he hadn't gone to drama school. But Welles became a great screen actor and there are many examples of models, writers, sportsmen and producers becoming fine movie actors. In fact, stage training can be a disadvantage for the movies.
But about one thing I have no doubt. The establishment of a "National Academy of Writing", reported in the Observer this week, is a really terrible idea. I don't just mean that it shouldn't be a priority, but that it is a bad idea in itself, a waste of money and of the time of everybody involved.
You hardly need to marshal contrary arguments, just observe the cloudiness of what people said in favour of it. Melvyn Bragg said lots of people write to him asking for advice: "Hopefully, the academy will be able to take on that role." Carmen Callil said the academy could assume the role once played by "great editors" in publishing houses who would help writers improve their work. Alan Plater, the TV scriptwriter, hoped the academy would raise the level of writing for television: "Whatever it was that gave us the great screenwriters like Potter, Bleasdale and Rosenthal isn't there any more."