The permaculture Design Diploma is a two year process of documenting your work in the world, demonstrating how you are applying the ethics and principles of permaculture.

The diploma process is a pathway to help you use and develop your permaculture design and implementation skills more effectively with relatively little effort. Importantly, it is much more than something just for those that want to teach design certificate courses. It is emerging as perhaps the most effective way for anyone to continue their permaculture learning and implementation process, whether that involves teaching or not, anyone wanting to continue their learning about sustainable living, and any one wanting to achieve their goals in life more effectively.

The first Diploma system was created by Bill Mollison. Now there are many Diploma systems around the world emerging from specific countries. 

Earth Action Mentor

Ecoescuela.net

Caordic Institute 

Gaia University Diploma

Bill Mollison Diploma

British Diploma

Spanish Diploma