Hi Joan,

First off you do not want to re-number anything with DDA or you will run into issues.  What you want to do is first create your new course name and number in your catalog.  The name can be the same as your current course.  Once created, navigate to District à System à Change Course Number.  Type your current course number and your new course number and make the change so that it affects all schools on this server if you want.  Click submit and depending on how may historical records you have it should take a few minutes but this will do all the work for you.  It will change enrollment records, stored grades, etc.  Once you have all of your courses changed your catalog will be somewhat of a mess with double course names.  PowerSchool does not recommend deleting courses from the system however I know that some people including myself have deleted the old course numbers to clean up their/my catalog.  JUST MAKE SURE THE COURSES YOU DELETE ARE OLD COURSE NUMBERS YOU HAVE CHANGED AND NOT AN ACTIVE ONES!!!  AGAIN THIS IS DDA AND ONCE YOU HIT THE DELETE BUTTON ITS GONE, except for backups.  Hopefully this helps.