I've spent a fair bit of time learning about the course progression from the AIARE directors and consulted with them closely as we tweaked the FOBP curriculum into a solid,
foundational awareness class-- a "pre level 1" if you will. It's been an eye-opening and humbling process.
Take it for what it's worth, but I strongly believe it's important that we all use the same vocabulary, base our assumptions about someone's level of training on the same criteria, and most significantly, acknowledge that as much as you think you know, there's a guy not far away who knows a LOT more than you. Nine times out of ten, they're quieter than you are. (interesting to note: I've never met anyone who told me they had a L3 without me asking.)
This is why we feel it is so important to
be an apprentice and a mentor throughout your entire career as a backcountry skier. Personally, the older I get, the more friends I lose to the mountains, the humbler I become and the more I realize that I still have a shitload to learn.