One way to educate your churches about the NCD principles and process is to make the various NCD books available to them. While some leaders will prefer to dive into the process and learn about NCD in direct response to their results, some would prefer to have some background first and may even like to have their leadership team read and discuss the process before taking the survey.
Discuss with your NCD National Partner which books might be best suited to different contexts in which you are ministering and also ask about any volume discount options that might be available to you.