From 1st Jan 2000 to the last of the 'old style' (ADC+APR) course ab initios the validation rate was 75%.
Since that time, validation rate of ab initios is 25%.
I researched the figures when myself and a colleague made a presentation to the NATS Training Conference last year, in a plea to better prepare students coming to Heathrow. Hopefully the processes in place will do that for those joining us soon.
I'm sure I must be forgetting some people but since the change in course style I can only think of there being 10 an initios?!? 5 of whom are valid, which is 50%. As I say though this is off the top of my head so may be forgetting some people.
FB