This chapter will indicate a range of uses for level descriptors. All of the different uses contribute ultimately to ensuring that a module, course or a full programme presents learners with an appropriate level of challenge in their learning. This challenge should accord with the levels system in higher education described in earlier chapters. The uses usually apply most directly to the development of modules. Sometimes, however, they also apply to fully developed courses that require to be credit rated at a particular level. The credit rating of a course means that the course is worth a certain volume of academic credit at a given level.