What must extra credit policies include according to the Corpus?

Extra credit policies must include clear definitions and communication by the instructor to ensure that all students understand the criteria, expectations, and procedures involved. This clarity helps to eliminate confusion and ambiguity regarding how extra credit can be earned, what types of activities qualify for extra credit, and any limitations associated with it. Open communication on these policies promotes transparency and fairness within the course, allowing students to know what is required of them to receive potential extra points.

The other options, while they may enhance the learning experience or support student outcomes, do not specifically align with the requirement for extra credit policies as stated in the Corpus. For instance, flexible deadlines and additional assignments are not universally applicable to all courses and may not be necessary for effective extra credit policy implementation. Similarly, confidentiality in grading pertains more to overall grading practices rather than specifically to the extra credit policies themselves.