Past Classes Chicago PDC 2016 - The first PDC in the Chicago city limits. This course was held over 6 weekends over 6 months, April to September, at the ICA Greenrise in the Andersonville neighborhood. Ann Arbor 2017 PDC - Taught by Milton Dixon, Bridget O'Brien, & Jesse Tack. This course was hosted by The Cooperative at Dawn Farm. Advanced PDC 2017 - Five days over October & November, additional design skills for professionals and community activists. Hosted by The Old Schoolhouse Community Garden in Hillside, IL.