I must confess my visit to the Academies Show in London's Olympia left me feeling a little mischievous last week. Not sure whether it was the sharp-suited stewards ushering everybody hither and thither with a kind of discipline even new chief schools inspector Sir Michael Wilshaw could only dream of. Or maybe it was the language used by some of the speakers – "structured customer feedback" particularly stuck in the throat. (There had been no mention of children up until then.)