Simon Cox reveals the truth behind the school league tables, exposing how schools are using easy exams and flaws in the system to paint a false picture of their improvement.
In special research for the programme, we reveal how some schools who boast that results putting them at the top of the league tables are being economical with the truth.
What the tables are not telling you is that they are actually failing to get even a third of their pupils to pass the basic GCSEs.
As one teacher in the programme puts it, 'the education system is conning the country'.
Simon shows how parents can find out how their local schools are really performing.