In reply to Wildnorthmark:
Depends what you're trying to do and where you're coming from.
There are courses to improve your skiiing (steeper, nastier snow) - that would be Alison Thacker/James Thacker and one or two others. Or do it in a continental resort.
There are courses to give you the basics avalanche avoidance/rescue techniques or to take it a lot further and deeper. Combine that with some route finding and "transition from mountaineering" and that would be Glenmore Lodge and set you up to get going in Scotland.
There are courses on deeper avalanche understanding, route planning, forecast interpretation, group management. You'd probably want a dose of that if your goal was multi-day peer-to-peer tours beyond Scotland, and it would certainly improve your Scottish experience.
Snowsport Scotland offer courses or links to folk who can provide. The Eagle Ski Club offer a huge range of training and meets which will let you put all those pieces together.
I could recommend the Glenmore course 10-15 years ago, I'm sure it's still excellent, I've heard great things about the Alison Thacker training and am off to do that in Chamonix this year, and I've been in the Eagles for over a decade and recommend them.
Y