Hi Chris,
I did the 2 week Sky School coarse in Italy last year starting from nothing. It's quite intensive doing 6 days per week for 2 weeks. After the first week I had about 3 solo flights. By the end of my second weeks I had 15 flights and felt pretty competent. I think there was only 1 day where the weather was not suitable for flying. Overall I think it was well worth the effort and was good value for money