I'm Jason and I hate writing `all about me' posts....
I am here because I have been able to borrow some Gadgeteer kits - and will be helping a group of highly-functional autistic teenagers (aka `potential future software engineers') experiment with them.
What kits do you have? If they are from GHI, you can get a lot of great technical help over at tinyCLR. It's great to see this technology being adopted by educators. You're one of the first I've run across using the Gadgeteer platform, as it is very new. We would love to see what you come up with for a cirriculum and/or projects for these kids. Also, I believe there is an educator specific forum over at Adafruit. While they focus primarily on Arduinos, you might be able to glean some useful information and network with others doing the same thing.
Just wanted to echo Eric and say that the Gadgeteer team is very excited about what you're doing with the platform! Please keep us posted, and let us know if you produce any case studies that you'd like featured in the Education area of this site.