Anyone in Germany who wants to train apprentices must first prove the necessary teaching aptitude. The Ausbilder-Eignungsverordnung, the ordinance on trainer aptitude of January 21, 2009, sets the exam. It has a written part, which should last three hours, and a practical part of at most 30 minutes in most trades. It covers four fields, from checking the conditions for training and planning it to concluding it. Germans call the certificate the Ausbilderschein, the trainer’s license.