I started my ATPL ground training with another ground school, who I was told were the best school out there. After taking 14 exams, I had failed 9. At one stage I thought that I'd never get through the damned exams. Following a suggestion from a student who had struggled at the same ground school, I switched to GTS. They gave me tuition in most of the difficult subjects. I passed the rest of the course without failing another exam. GTS are THE school to go for if you are about to start ATPL's or are struggling at your current school. They have just re-written their notes and the guys who run the show are now writing the questions for some of the tougher JAA exams. If that doesn't make you take notice, nothing will!