Flisspaps - I fail to see your points.
When these 200 have improved, then there will be another 200 schools waiting to take their place as the 'failing' schools.
If these schools turn into academies and results improve, then it was a good thing.
Then why not turn the next 200 worse performing schools into academies?
If however these schools turn into academies and results don't improve, then it was either a neutral or bad thing.
These 'failing' schools are often schools with good teachers, good headteachers and hugely variable cohorts
Being an academy doesn't mean you have to fire good teachers and good headteachers..........
These schools may have good HTs, and they may not. Getting someone else to review the situation and ask the hard questions does not seem like a bad idea....... It is very hard to fire HTs or teachers. Out of these 200 schools, some of them will have bad HTs, and some of them will improve by becoming an academy.
Whether lots of them will improve - I have no idea......