We are offering two PDC courses this year. Summer runs May 30 - August 15; fall is August 29 - November 14. Commuters from the area come for 12 Wednesdays in a row, and receive their certificate upon completion. We are 30 minutes outside Eugene, OR, and have been teaching permaculture since 1989.
The course covers permaculture ethics & principles, observation and patterns in nature, how to design, water on the landscape, plant systems, using animals, natural building, forestry, appropriate technology, energy, a group design project, and more. Further info on the webpage.
For a fuller experience there is the Holistic Sustainability Semester, which includes three months of living onsite in the ecovillage here and studying five spheres of sustainability, not just the ecological/PDC. Info here.