BBC article here
"In one academy, 70% of pupils got five good GCSEs, but this reduced to zero when equivalents were discounted."
So what they are saying is that EVERY child in that Academy is doing one of these inflated "worth 2, 4, 6" courses, eg COPE; presumably purely to try and manipulate the league tables. But actually NONE of the students are leaving with a handful of decent qualifications?! 
I wonder where this school is?