I recently compiled a list of 17 classes in Alaska Native languages being offered for credit through the University of Alaska in Spring 2009. These include classes in five different languages: Yup'ik, Inupiaq (North Slope and Kotzebue dialects), Koyukon, Tlingit, and Haida. Classes are offered through the Fairbanks, Anchorage and Southeast campuses, and many of the classes are offered via distance delivery.
If you know of other courses which should be included on the list, let me know and I'll add them.