Our self-study tag is defined as:
A routine question from a textbook, course, or test used for a class or self-study. This community's policy is to "provide helpful hints" for self-study questions.
The confusion comes from what self-study actually is, versus what the tag says. For example, I have failed through self-study to understand where actual self-study ends and the tag description begins. It is fairly clear from the longer description what the self-study tag is supposed to be and how to use it, but I must confess that I didn't look it up until just now, and, that the semantically confusing tag name is unhelpfully a tromp l'oeil.
Maybe we should consider having a different label for this? For example, "textbook questions", "student questions" or something slightly less confusing?