Stage 4 is the last step in the UbD process - it is "closing the loop".
This stage involves a review of the entire program and the courses within the program.
In order to begin this process, the entire program must be taught through its entirety.
In order to do a Stage 4 course review, the course must be taught for at least a year for minor updates, and the CRIP schedule will determine a 3 to 5-year time frame for major course revisions.