Naunton Pugh
You say an average student needs 14-15 hours to solo,must be using quite a complex aircraft. I went solo in 4:20, in a PA18 cub, a friend soloed in 3:30 in a PA28, although a few special circumstances with that one. This is going back 45 years, surely the ball game hasnt changed that much. From memory the average to solo would be well under 10 hours in the majority of cases, and that was using a tail dragger.
Prospector