If you wish to make any given curriculum unavailable to users, go to the Content Menu and head to the Curriculum segment. Locate the curriculum you are looking for and use the curriculum settings menu click to access the Edit option. You have two options in the status field – Available and Unavailable. Click on Unavailable and then on the Save and Exit button.
Any curriculum once marked as unavailable will not be visible or accessible to anyone including the learners the curriculum was assigned to.