Next week, I'm starting this course at Earth Advantage which I'm looking forward to. Stephen Aiguier of Green Hammer is teaching it, which should be good. David Heslam, who started Coho Construction, used to teach the course, but he is now devoting his time to Earth Advantage's remodeling certification program.
I've been wary of gaining certification in many of the sustainable/green courses that are out there, just because I wondered about the value really being offered. After looking into the curriculum that Earth Advantage Institute (EAI) and the staff they have, I'm convinced this is worth it. It's recognized as a 400 level course by the US Green Building Council, 84 learning credits by AIA and the CCB, it lasts 6 months and the material that they base the course on is well respected and scientifically solid.
Next year, I'll likely look at going through the Passive House consultant training. I recently picked up the "Passivhaus-Bauteilkatalog / Details for Passive Houses" which I'd recommend to anyone getting into the field of Passive House construction.