One of the issues clients who want to build on Drupal as a sustainable platform face is identifying qualified Drupal professionals or making sure their inhouse developers get up to speed with Drupal in a reliable fashion. At the moment, there are several Drupal companies that provide bespoke Drupal training but there isn't a unified training curriculum that could be easily replicated and adopted for in house training and against which people who haven't had the time to gain natural experience in the community could be assessed.