Carol Jan
As mentioned above most of the early members of the ATA did have pilots licenses pre-war but as the organisation grew a lot of people were taken on who had to be taught from scratch. See my webpage below for some women pilots comments on their training at Haddenham plus a list of the training excersises. Also a few pages from a couple of logbooks.
The Maidenhead Heritage Centre are extremely helpful and usually answer an e-mail in a couple of days.

http://www.haddenhamairfieldhistory.co.uk/ferrypilots.htm

Peter