My students don't see the sections I assigned

Junko Roberts:

The course mastery and the assignments are accessed by two different tabs so either should not interfere with the other on how they are accessed. If a due date passes, the assignment moves under the past tab.

If you delete assignments, student can look them up and access them on their own. However, in them doing that, reports will not be generated, since you didn't assign them, and there will not be an easy way to see how they did them or even if they did them.