QUOTE(skylark @ Apr 9 2008, 08:34 PM)

I was surprised when I first looked at doing jazz that improvisation isn't just a free-for-all, there are certain "rules" to bear in mind, like which key you play in or which scales you use. And as you probably know from the syllabus, the scales are different from the classical scales - eg Dorian, Mixolydian and a few others (I don't *think* you get these even at the higher classical grades, but I could be wrong).
Interestingly, you do get some of these if you're doing Trinity grades...(well you do on guitar)
I think the skills are very different...I was going to do Grade 5 jazz exam which is said to be of a higher standard than G5 classical (apparently...) but then I switched to classical, without any problems, and it certainly wasn't too easy

I think that technically you'll find the stuff easy, but it's very different, and there's a lot more you can learn from the jazz books...