Won't happen like that njee20. For a start our ratio of rider to instructor is such that there will always be time for individual treatment – it is never a lowest common denominator situation.
The levels represent a progression through the skills system, building some basic principles first, then adding more and more meat to the bones. Level three is all about getting to the point where you are exploiting the trail, rather than just managing the trail. But level three will be more rewarding if you have done a level one or two beforehand because you will understand the terminology and the system. In that sense the levels aren't so much about how good you are already.
If you get a few people together you can just do a private session and it will all be totally bespoke and flexible (although, as I said, flexibility is already part of what we always do).
Oh – and if we get it wrong we'll just invite you to another session.